S-8241 Series S-8241 Series series lithium-ion/lithium polymer re
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BATTERY PROTECTION SINGLE CELL PACK
S-8241 Series
S-8241 Series series lithium-ion/lithium polymer rechargeable battery protection incorporating high-accuracy voltage detection circuits delay circuits. These suitable protection single-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge overcurrent.
Features
Internal high-accuracy voltage detection circuit Overcharge detection voltage: mV-step) Accuracy mV(+25°C) mV(-5°C +55°C) Overcharge release voltage Accuracy
Overcharge release voltage Overcharge detection voltage Overcharge hysteresis overcharge hysteresis selected range 0.0, 50mV steps. (However, selection "Overcharge release voltage<3.8 enabled.)
Overdischarge detection voltage: Overdischarge release voltage:
(100 mV-step) Accuracy Accuracy ±100
Overdischarge release voltage Overdischarge detection voltage Overdischarge hysteresis overdischarge hysteresis selected range 100mV steps. (However, selection "Overdischarge release voltage>3.4 enabled.)
Overcurrent detection voltage: 0.05 mV-step) Accuracy Overcurrent detection voltage: (fixed) Accuracy ±100 high voltage withstand device used charger connection pins pins: Absolute maximum rating Delay times (overcharge: tCU; overdischarge: tDL; overcurrent tlOV1; overcurrent tlOV2) generated internal circuit. (External capacitors unnecessary.) Accuracy Internal three-step overcurrent detection circuit (overcurrent overcurrent load short-circuiting) Either battery charging function battery charge inhibiting function selected. Products with without power-down function selected. Charger detection function abnormal charge current detection function overdischarge hysterisis released detecting negative voltage (typ. -1.3 (Charger detection function) output voltage high voltage becomes equal lower than charger detection voltage (typ. -1.3 output voltage goes low. (Abnormal charge current detection function) current consumption Operation: typ. max. Power-down mode: max. Wide operating temperature range: (10) Small package SOT-23-5, 5-Pin SON(A)
Applications
Lithium-ion rechargeable battery packs Lithium- polymer rechargeable battery packs
Packages
SOT-23-5 (PKG drawing code MP005-A) 5-Pin SON(A) (PKG drawing code PN005-A)
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series Block Diagram
Delay circuit
Clock generation circuit
Load shortcircuiting detection circuit
Counter circuit
Overcharge detection comparator
Level conversion circuit battery charging circuit battery charge inhibition circuit
RCOL
Overdischarge detection comparator
overdischarge hysterisis released when charger detected. Charger detection circuit Overcurrent detection comparator
RVMD RVMS
Overcurrent detection comparator
Remark diodes parasitic diodes Figure Block Diagram
Product Code Structure
Product name Product name: S-8241AB S-8241AC Symbol -product code (GB)-taping orientation -product code (GC)-taping orientation Meaning Serial number Package form Description from sequence. MC:SOT-23-5, PN:5-pin SON(A)
Seiko Instruments Inc.
Product name list
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Model No./Item
Overcharge detection voltage [VCU] 4.275 4.280 4.350 4.275 4.295 4.325 4.200 4.325 4.280 4.325 4.320 4.350V 4.350V 4.350V 4.280V 4.350V 4.300V 4.200V 4.295V 4.280V 4.350V 4.220 4.275 4.280 4.300 4.275 4.295 4.295 4.295 4.280 4.350 4.300V 4.350V 4.200V 4.350V
Overcharge release voltage [VCL] 4.075 3.980 4.100 4.175 4.095 4.075 4.100 4.125 4.080 4.075 4.070 4.050V 4.15V 4.15V 4.080V 4.150V 4.100V 4.100V 4.095V 4.080V 4.000V 4.220 4.075 4.080 4.100 4.075 4.095 4.095 4.095 4.080 4.150 4.100V 4.150V 4.200V 4.150V
Overdischarge detection voltage [VDL] 2.35V 2.3V 2.3V 2.3V 2.35V 2.3V 2.3V 2.3V 2.3V 2.6V 2.05 2.3V 2.0V 2.5V 2.1V
Overdischarge release voltage [VDU] 2.65V 3.0V 3.0V 2.3V 2.65V 2.3V 2.3V 2.3V 2.3V 3.3V 2.75 2.3V 2.0V 3.0V 2.2V
Overcurrent detection voltage [VIOV1] 0.100 0.125 0.075 0.100 0.200 0.100 0.100 0.100 0.160 0.150 0.100 0.150V 0.150V 0.200 0.130 0.200 0.100 0.150 0.130 0.130 0.200 0.200 0.140 0.200 0.150 0.100 0.080 0.090 0.060 0.200 0.200 0.120V 0.200V 0.100V 0.200V
battery charging function
Delay time combi*1 nation
Power down function
S-8241ABAMC-GBA-T2 S-8241ABBMC-GBB-T2 S-8241ABCMC-GBC-T2 S-8241ABDMC-GBD-T2 S-8241ABDPN-KBD-TF S-8241ABEMC-GBE-T2 S-8241ABFMC-GBF-T2 S-8241ABGMC-GBG-T2 S-8241ABHMC-GBH-T2 S-8241ABIMC-GBI-T2 S-8241ABKMC-GBK-T2 S-8241ABLMC-GBL-T2 S-8241ABNPN-KBN-TF S-8241ABOMC-GBO-T2 S-8241ABPMC-GBP-T2 S-8241ABQMC-GBQ-T2 S-8241ABSPN-KBS-TF S-8241ABTPN-KBT-TF S-8241ABUMC-GBU-T2 S-8241ABVMC-GBV-T2 S-8241ABWMC-GBW-T2 S-8241ABXMC-GBX-T2 S-8241ABXPN-KBX-TF S-8241ABYMC-GBY-T2 S-8241ABZPN-KBZ-TF S-8241ACAMC-GCA-T2 S-8241ACAPN-KCA-TF S-8241ACBMC-GCB-T2 S-8241ACDMC-GCD-T2 S-8241ACEMC-GCE-T2 S-8241ACFMC-GCF-T2 S-8241ACGMC-GCG-T2 S-8241ACGPN-KCG-TF S-8241ACHMC-GCH-T2 S-8241ACIMC-GCI-T2 S-8241ACJPN-KCJ-TF S-8241ACKMC-GCK-T2 S-8241ACLMC-GCL-T2 S-8241ACNMC-GCN-T2
Unavailable Available Unavailable Available Unavailable Unavailable Unavailable Available Unavailable Unavailable Unavailable Available Available Available Unavailable Available Available Unavailable Available Unavailable Unavailable Available Available Available Available Unavailable Available Available Available Available Available Available Available Available Available
Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Model No./Item
Overcharge detection voltage [VCU] 4.100 4.325 4.275 4.350 4.180 4.100 4.180 4.350
Overcharge release voltage [VCL] 3.850 4.075 4.175 4.150 3.930 4.000 4.080 4.150
Overdischarge detection voltage [VDL]
Overdischarge release voltage [VDU]
Overcurrent detection voltage [VIOV1] 0.150 0.150 0.100 0.100 0.150 0.150 0.150 0.200
battery charging function
Delay time combi*1 nation
Power down function
S-8241ACOMC-GCO-T2 S-8241ACPMC-GCP-T2 S-8241ACQMC-GCQ-T2 S-8241ACRMC-GCR-T2 S-8241ACSMC-GCS-T2 S-8241ACTMC-GCT-T2 S-8241ACUMC-GCU-T2 S-8241ACWMC-GCW-T2
Unavailable Unavailable Available Available Unavailable Unavailable Unavailable Available
Unavailable Unavailable Unavailable Unavailable Unavailable Unavailable Unavailable Unavailable
delay time combination (1), (2), (3), follows. Delay time combination Overcharge detection delay time 0.125 0.25 Overdischarge detection delay time Overcurrent detection delay time
possible change detection voltage products other than those listed above. Also, delay time changed within following range. details, please contact sales office. Delay time Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time Symbol tlOV1 0.25 Optional range 62.5 Remarks Choose from list left. Choose from list left. Choose from list left.
Shaded boxes indicate standard values.
Seiko Instruments Inc.
Rev.3.8_00 Assignment
SOT-23-5 view
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Symbol
Description Voltage detection between (Overcurrent detection pin) Positive power input Negative power input gate connection discharge control (CMOS output) gate connection charge control (CMOS output)
Figure
5-Pin SON(A) view
Symbol
Description Voltage detection between (Overcurrent detection pin) Positive power input gate connection charge control (CMOS output) gate connection discharge control (CMOS output)
Negative power input Remark assignment SOT-23-5 5-Pin SON(A) different.
Figure
Absolute Maximum Ratings
25°C unless otherwise specified) Item Input voltage between Input voltage output voltage output voltage Power dissipation SOT-23-5 5-Pin SON(B) Operating temperature range Storage temperature range Symbol Topr Tstg Applicable Rating -0.3 +0.3 -0.3 +0.3 -0.3 +0.3 +125 Unit
apply pulse-like noise order exceeding above input voltage (VSS noise causes damage Caution absolute maximum ratings rated values exceeding which product could suffer physical damage. These values must therefore exceeded under conditions.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Electrical Characteristics Other than detection delay time (25°C)
Item Symbol Measurement conditions Remarks Min.
25°C unless otherwise specified) Measure Typ. Max. Unit -ment circuit
DETECTION VOLTAGE VCU-0.025 VCU+0.025 Overcharge detection voltage VCU=3.9 Step -5°C 55°C VCU-0.030 VCU+0.030 Overcharge release voltage When VCL-0.050 VCL+0.050 VCU-VCL=0 50mV Step When VCL-0.025 VCL+0.025 Overdischarge detection voltage VDL-0.080 VDL+0.080 VDL=2.0 100mV Step Overdischarge release voltage When VDU-0.100 VDU+0.100 VDU-VDL=0 100mV Step When VDU-0.080 VDU+0.080 Overcurrent detection voltage VIOV1+0.02 VIOV1-0.020 VIOV1 VIOV1 VIOV1=0.05 0.3V, Step Overcurrent detection voltage VIOV2 Load short-circuiting detection voltage based -1.7 -1.3 -0.9 VSHORT voltage Charger detection voltage VCHA -2.0 -1.3 -0.6 Overcharge detection voltage -5°C 55°C -0.5 mV/°C TCOE1 temperature factor Overcurrent detection voltage -5°C 55°C -0.1 mV/°C TCOE2 temperature factor INPUT VOLTAGE, OPERATING VOLTAGE Input voltage between absolute maximum rating -0.3 VDS1 Input voltage between VDS2 absolute maximum rating -0.3 Operating voltage between Internal circuit operating voltage VDSOP1 Operating voltage between Internal circuit operating voltage VDSOP2 CURRENT CONSUMPTION Power-down function available Current consumption during normal VDD=3.5V, VVM=0 operation Current consumption power VDD=VVM =1.5 down CURRENT CONSUMPTION Power-down function unavailable Current consumption during normal VDD=3.5 VVM=0 operation Overdischarge current consumption OPED VDD=VVM =1.5 OUTPUT RESISTANCE resistance RCOH VCO=3.0 V,VDD=3.5 V,VVM=0 resistance RCOL VCO=0.5 V,VDD=4.5 V,VVM=0 2400 resistance RDOH VDO=3.0 V,VDD=3.5 V,VVM=0 resistance RDOL VDO=0.5 V,VDD=VVM=1.8 INTERNAL RESISTANCE Internal resistance between VDD=1.8 RVMD Internal resistance between VDD=VVM =3.5 RVMS BATTERY CHARGING FUNCTION battery function either battery charging function" battery charge inhibiting function" depending upon product type. battery charge starting charger battery charging Available V0CHA voltage battery charge inhibiting battery battery charging Unavailable V0INH voltage Since products screened high temperatures, specification this temperature range guaranteed design, tested production.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Electrical Characteristics Other than detection delay time (-40 85°C)
Item
Symbol
Measurement conditions
Remarks
(-40 85°C )unless otherwise specified) Measure Min. Typ. Max. Unit -ment circuit
DETECTION VOLTAGE Overcharge detection voltage VCU-0.055 VCU+0.040 VCU=3.9 Step Overcharge release voltage When VCL-0.095 VCL+0.060 VCU-VCL=0 50mV Step When VCL-0.055 VCL+0.040 Overdischarge detection voltage VDL-0.120 VDL+0.120 VDL=2.0 100mV Step Overdischarge release voltage When VDU-0.140 VDU+0.140 VDU-VDL=0 100mV Step When VDU-0.120 VDU+0.120 Overcurrent detection voltage VIOV1-0.026 VIOV1 VIOV1+0.026 VIOV1 VIOV1=0.05 0.3V, Step Overcurrent detection voltage VIOV2 0.37 0.63 Load short-circuiting detection voltage based -1.9 -1.3 -0.7 VSHORT voltage Charger detection voltage VCHA -2.2 -1.3 -0.4 Overcharge detection voltage -40°C 85°C -0.7 mV/°C TCOE1 temperature factor Overcurrent detection voltage -40°C 85°C -0.2 mV/°C TCOE2 temperature factor INPUT VOLTAGE, OPERATING VOLTAGE Input voltage between absolute maximum rating -0.3 VDS1 Input voltage between VDS2 absolute maximum rating -0.3 Operating voltage between Internal circuit operating voltage VDSOP1 Operating voltage between Internal circuit operating voltage VDSOP2 CURRENT CONSUMPTION Power-down function available Current consumption during normal VDD=3.5 VVM=0 operation Current consumption power VDD=VVM =1.5 down CURRENT CONSUMPTION Power-down function unavailable Current consumption during normal VDD=3.5 VVM=0 operation Overdischarge current consumption OPED VDD=VVM =1.5 OUTPUT RESISTANCE resistance RCOH VCO=3.0 V,VDD=3.5 V,VVM=0 0.07 resistance RCOL VCO=0.5 V,VDD=4.5 V,VVM=0 3500 resistance RDOH VDO=3.0 V,VDD=3.5 V,VVM=0 0.07 resistance RDOL VDO=0.5 V,VDD=VVM=1.8 0.07 INTERNAL RESISTANCE Internal resistance between VDD=1.8 1310 RVMD Internal resistance between VDD=VVM =3.5 RVMS BATTERY CHARGING FUNCTION battery function either battery charging function" battery charge inhibiting function" depending upon product type. battery charge starting charger battery charging Available V0CHA voltage battery charge inhibiting battery battery charging Unavailable V0INH voltage Since products screened high temperatures, specification this temperature range guaranteed design, tested production.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Electrical Characteristics Detection delay time (25°C)
25°C unless otherwise specified) Item DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time Overcurrent detection delay time Load short-circuiting detection delay time DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time Overcurrent detection delay time Load short-circuiting detection delay time DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time Overcurrent detection delay time DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time Overcurrent detection delay time Load short-circuiting detection delay time Symbol tlOV1 tlOV2 tSHORT tlOV1 tlOV2 tSHORT tlOV1 tlOV2 tlOV1 tlOV2 tSHORT Measurement conditions Remarks Min. 87.5 87.5 0.175 87.5 87.5 Typ. 0.25 Max. 162.5 10.4 162.5 0.325 162.5 10.4 162.5 10.4 Unit Measurement circuit
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Electrical Characteristics Detection delay time (-40 85°C)
Item Symbol Measurement conditions Remarks Min. 0.55 0.138
85°C Typ. 0.25
unless otherwise specified) Unit Measurement circuit
Max. 0.425
DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time tIOV1 Overcurrent detection delay time tIOV2 Load short-circuiting detection delay tSHORT time DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time tIOV1 Overcurrent detection delay time tIOV2 Load short-circuiting detection delay time tSHORT DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time tIOV1 Overcurrent detection delay time tIOV2 Load short-circuiting detection delay time tSHORT DELAY TIME Overcharge detection delay time Overdischarge detection delay time Overcurrent detection delay time tIOV1 Overcurrent detection delay time tIOV2 Load short-circuiting detection delay time tSHORT
Since products screened high temperatures, specification this temperature range guaranteed design, tested production.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Measurement Circuits
Unless otherwise specified, output voltage levels pins judged threshold voltage (1.0 FET. Judge level with respect level with respect VSS. Voltages shown figure Measurement Condition Measurement Circuit Overcharge detection voltage, Overcharge release voltage, Overdischarge detection voltage, Overdischarge release voltage overcharge detection voltage (VCU) defined voltage between which goes from when voltage gradually increased from normal condition V1=3.5 V2=0 overcharge release voltage (VCL) defined voltage between which goes from when voltage then gradually decreased. Gradually decreasing voltage overdischarge detection voltage (VDL) defined voltage between which goes from overdischarge release voltage (VDU) defined voltage between which goes from when voltage then gradually increased. Measurement Condition Measurement Circuit Overcurrent detection voltage, Overcurrent detection voltage, Load short-circuiting detection voltage overcurrent detection voltage (VIOV1) defined voltage between which goes from when voltage gradually increased from normal condition V1=3.5 V2=0 overcurrent detection voltage (VIOV2) defined voltage between which goes from when voltage increased speed between from normal condition V1=3.5 V2=0 load short-circuiting detection voltage (VSHORT) defined voltage between which goes from when voltage increased speed between from normal condition V1=3.5 V2=0 Measurement Condition Measurement Circuit Charger detection voltage, (=abnormal charge current detection voltage) Applied only products with overdischarge hysteresis V1=1.8 V2=0 under overdischarge condition. Increase gradually, V1=(VDU+VDL)/2 (within overdischarge hysteresis, overdischarge condition), then decrease from gradually. voltage between which goes from charger detection voltage (VCHA). Applied only products without overdischarge hysteresis V1=3.5 V2=0 under normal condition. Decrease from gradually. voltage between which goes from abnormal charge current detection voltage. abnormal charge current detection voltage same value charger detection voltage (VCHA).
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Measurement Condition Measurement Circuit Normal operation current consumption, Power-down current consumption, Overdischarge current consumption V1=3.5 V2=0 under normal condition. current flowing through normal operation consumption current (IOPE). products with power-down function V1=V2=1.5 under overdischarge condition. current flowing through power-down current consumption (IPDN). products without power-down function V1=V2=1.5 under overdischarge condition. current flowing through overdischarge current consumption (IOPED).
Measurement Condition Measurement Circuit Internal resistance between VDD, Internal resistance between V1=1.8 V2=0 under overdischarge condition. Measure current flowing through pin. 1.8V/|IVM| gives internal resistance (RVMD) between VDD. V1=V2=3.5 under overcurrent condition. Measure current flowing through pin. V/|IVM| gives internal resistance (RVMS) between VSS.
Measurement Condition Measurement Circuit resistance, resistance V1=3.5 V2=0 V3=3.0 under normal condition. Measure current flowing through pin. V/|ICO| resistance (RCOH). V1=4.5 V2=0 V3=0.5 under overcharge condition. Measure current flowing through pin. V/|ICO| resistance (RCOL).
Measurement Condition Measurement Circuit resistance, resistance V1=3.5 V2=0 V4=3.0 under normal condition. Measure current flowing through pin. 0.5V/|IDO| gives resistance (RDOH). V1=1.8 V2=0 V4=0.5 under overdischarge condition. Measure current flowing through pin. V/|IDO| gives resistance (RDOL).
Measurement Condition Measurement Circuit Overcharge detection delay time, Overdischarge detection delay time V1=3.5 V2=0 under normal condition. Increase gradually overcharge detection voltage increase overcharge detection voltage momentarily (within µs). time after becomes overcharge detection voltage until goes overcharge detection delay time (tCU). V1=3.5 V2=0 under normal condition. Decrease gradually overdischarge detection voltage decrease overdischarge detection voltage momentarily (within µs). time after becomes overdischarge detection voltage until goes overdischarge detection delay time (tDL).
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Measurement Condition Measurement Circuit
Overcurrent detection delay time, Overcurrent detection delay time, Load short-circuiting detection delay time, Abnormal charge current detection delay time V1=3.5V V2=0V under normal condition. Increase from 0.35 momentarily (within µs). time after becomes overcurrent detection voltage (VIOV1) until goes overcurrent detection delay time (tIOV1). V1=3.5 V2=0 under normal condition. Increase from momentarily (within µs). time after becomes overcurrent detection voltage (VIOV1) until goes overcurrent detection delay time (tIOV2).
Note: overcurrent detection delay time starts when overcurrent detected, since delay circuit common.
V1=3.5 V2=0 under normal condition. Increase from momentarily (within µs). time after becomes load short-circuiting detection voltage (VSHORT) until goes load short-circuiting detection delay time (tSHORT). V1=3.5 V2=0 under normal condition. Decrease from -2.5 momentarily (within µs). time after becomes charger detection voltage (VCHA) until goes abnormal charge current detection delay time. abnormal charge current detection delay time same value overcharge detection delay time. (10) Measurement Condition Measurement Circuit (Product with battery charging function) battery charge start charger voltage V1=V2=0 decrease gradually. voltage between which goes (VVM higher) battery charge start charger voltage (V0CHA). (11) Measurement Condition Measurement Circuit (Product with battery charge inhibiting function) battery charge inhibiting battery voltage V1=0 V2=-4 Increase gradually. voltage between which goes (VVM higher) battery charge inhibiting battery voltage (V0INH).
S-8241 series
Measurement circuit Figure Seiko Instruments Inc.
Rev.3.8_00 Description Operation
Normal condition
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
S-8241 monitors voltage battery connected pins voltage difference between pins control charging discharging. When battery voltage range from overdischarge detection voltage (VDL) overcharge detection voltage (VCU), voltage range from charger detection voltage (VCHA) overcurrent detection voltage (VIOV1) (the current flowing through battery equal lower than specified value), turns both charging discharging control FETs This condition called normal condition this condition charging discharging carried freely. Overcurrent condition When discharging current becomes equal higher than specified value (the voltage equal higher than overcurrent detection voltage) during discharging under normal condition state continues overcurrent detection delay time longer, S-8241 turns discharging control stop discharging. This condition called overcurrent condition. (The overcurrent includes overcurrent overcurrent load short-circuiting.) pins shorted internally RVMS resistor under overcurrent condition. When load connected, voltage equals voltage load. overcurrent condition returns normal condition when load released impedance between pins (see figure connection example) becomes higher than automatic recoverable impedance (see equation below). When load removed, goes back potential since shorted with RVMS resistor. Detecting that potential lower than overcurrent detection voltage (VIOV1), returns normal condition. Automatic recoverable impedance {Battery voltage (Minimum value overcurrent detection voltage) (RVMS maximum value) Example: Battery voltage overcurrent detection voltage (VIOV1) Automatic recoverable impedance (3.5 0.07
Remark automatic recoverable impedance varies with battery voltage overcurrent detection voltage settings. Determine minimum value open load using above equation have automatic recovery from overcurrent condition work after checking overcurrent detection voltage setting
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Overcharge condition
When battery voltage becomes higher than overcharge detection voltage (VCU) during charging under normal condition state continues overcharge detection delay time (tCU) longer, S-8241 turns charging control stop charging. This condition called overcharge condition. overcharge condition released following cases without overcharge hysteresis: Products with overcharge hysteresis (overcharge detection voltage (VCU) overcharge release voltage (VCL)) When battery voltage drops below overcharge release voltage (VCL), S-8241 turns charging control returns normal condition. When load connected discharging starts, S-8241 turns charging control returns normal condition. release mechanism follows: discharging current flows through internal parasitic diode charging immediately after load connected discharging starts, voltage increases about voltage diode) from voltage momentarily. detects this voltage (being higher than overcurrent detection voltage) releases overcharge condition. Consequently, case that battery voltage equal lower than overcharge detection voltage (VCU), returns normal condition immediately, case battery voltage higher than overcharge detection voltage (VCU), does return normal condition until battery voltage drops below overcharge detection voltage (VCU) even load connected. addition voltage equal lower than overcurrent detection voltage when load connected discharging starts, does return normal condition.
Remark battery charged voltage higher than overcharge detection voltage (VCU) battery voltage does drops below overcharge detection voltage (VCU) even when heavy load, which causes overcurrent, connected, overcurrent overcurrent work until battery voltage drops below overcharge detection voltage (VCU). Since actual battery has, however, internal impedance several dozens battery voltage drops immediately after heavy load which causes overcurrent connected, overcurrent overcurrent work. Detection load short-circuiting works regardless battery voltage.
depending products with
Products without overcharge hysteresis (Overcharge detection voltage (VCU) Overcharge release voltage (VCL)) When battery voltage drops below overcharge release voltage (VCL), S-8241 turn charging control returns normal condition. When load connected discharging starts, S-8241 turns charging control returns normal condition. release mechanism explained follows discharging current flows through internal parasitic diode charging immediately after load connected discharging starts, voltage increases about voltage diode) from voltage momentarily. Detecting this voltage (being higher than overcurrent detection voltage), increases overcharge detection voltage about releases overcharge condition. Consequently, when battery voltage equal lower than overcharge detection voltage (VCU) S-8241 immediately returns normal condition. battery voltage higher than overcharge detection voltage (VCU) S-8241 does return normal condition until battery voltage drops below overcharge detection voltage (VCU) even load connected. voltage equal lower than overcurrent detection voltage when load connected discharging starts, S-8241 does return normal condition.
Remark battery charged voltage higher than overcharge detection voltage (VCU) battery voltage does drop below overcharge detection voltage (VCU) even when heavy load, which causes overcurrent, connected, overcurrent overcurrent work until battery voltage drops bellow overcharge detection voltage (VCU) Since actual battery has, however, internal impedance several dozens battery voltage drops immediately after heavy load which causes overcurrent connected, overcurrent overcurrent work. Detection load short-circuiting works regardless battery voltage.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Overdischarge condition (for products with power-down function) When battery voltage drops below overdischarge detection voltage (VDL) during discharging under normal condition continues overdischarge detection delay time (tDL) longer, S-8241 turns discharging control stops discharging. This condition called overdischarge condition. After discharging control turned off, pulled RVMD resistor between Meanwhile potential difference between drops below (typ.) (the load short-circuiting detection voltage), current consumption reduced power-down current consumption (IPDN). This condition called power-down condition. pins shorted RVMD resistor under overdischarge power-down conditions. power-down condition released when charger connected potential difference between becomes (typ.) higher (load short-circuiting detection voltage). this time, still off. condition.
Remark voltage less than charger detection voltage (VCHA), when battery under overdischarge condition connected charger, overdischarge condition released (the discharging control turned usual, provided that battery voltage reaches overdischarge release voltage (VDU) higher.
When battery voltage becomes overdischarge detection voltage (VDL) higher (see
note), S-8241 turns changes normal condition from overdischarge
Overdischarge condition (for products without power-down function) When battery voltage drops below overdischarge detection voltage (VDL) during discharging under normal condition continues overdischarge detection delay time (tDL) longer, S-8241 turns discharging control stops discharging. When discharging control turned off, pulled RVMD resistor between Meanwhile potential difference between drops below (typ.) (the load short-circuiting detection voltage), current consumption reduced overdischarge current consumption (IOPED). This condition called overdischarge condition. pins shorted RVMD resistor under overdischarge condition. When charger connected, overdischarge condition released same explained above respect products having power-down function. products without power-down function, addition, even charger connected, S-8241 turns discharging control changes normal condition from overdischarge condition provided that load disconnected that potential difference between drops below overcurrent detection voltage (VIOV1), since pulled down RVMS resistor between when battery voltage reaches overdischarge release voltage (VDU) higher. Charger detection voltage lower than charger detection voltage (VCHA) when battery overdischarge condition connected charger, overdischarge hysteresis released, when battery voltage becomes equal higher than overdischarge detection voltage (VDL), overdischarge condition released (the discharging control turned on). This action called charger detection. (The charger detection reduces time charging which charging current flows through internal parasitic diode discharging control FET.) voltage lower than charger detection voltage (VCHA) when battery overdischarge condition connected charger, overdischarge condition released (the discharging control turned usual, when battery voltage reaches overdischarge release voltage (VDU) higher. Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Abnormal charge current detection voltage drops below charger detection voltage (VCHA) during charging under normal condition continues overcharge detection delay time (tCU) longer, S-8241 turns charging control stops charging. This action called abnormal charge current detection. Abnormal charge current detection works when discharging control voltage "H") voltage drops below charger detection voltage (VCHA). When abnormal charge current flows into battery overdischarge condition, S-8241 consequently turns charging control stops charging after battery voltage becomes overdischarge detection voltage higher voltage becomes "H") overcharge detection delay time (tCU) elapses. Abnormal charge current detection released when voltage difference between becomes lower than charger detection voltage (VCHA) separating charger. Since battery charging function higher priority than abnormal charge current detection function, abnormal charge current detected product with battery charging function while battery voltage low. Delay circuits following detection delay times generated dividing approximate clock with counter. [Ex.] Overcharge detection delay time abnormal charge current detection delay time): 1.0s Overdischarge detection delay time: Overcurrent detection delay time: Overcurrent detection delay time:
Remark After having detected overcurrent (overcurrent overcurrent short-circuiting), state held overdischarge detection delay time longer without releasing load, condition changes power-down condition when battery voltage drops below overdischarge detection voltage. battery voltage drops below overdischarge detection voltage overcurrent, discharging control turned when overcurrent detected. battery voltage recovers slowly battery voltage after overdischarge detection delay time equal lower than overdischarge detection voltage, S-8241 changes power-down condition. Counting overcurrent detection delay time starts when overcurrent detected. Having detected overcurrent overcurrent detected after overcurrent detection delay time, S-8241 turns discharging control shown figure this case, overcurrent detection delay time seem longer overcurrent detection delay time seem shorter than expected.
Overcurrent detection delay time (tIOV2) Time
VIOV2 VIOV1
Time
Figure
Seiko Instruments Inc.
battery charging function
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
This function enables charging connected battery whose voltage self-discharge. When charger having battery start charging charger voltage (V0CHA) higher connected between pins, charging control gate fixed potential. When voltage between gate source charging control becomes equal higher than turn-on voltage charger voltage, charging control turned start charging. this time, discharging control charging current flows through internal parasitic diode discharging control FET. battery voltage becomes equal higher than overdischarge release voltage (VDU), normal condition returns. battery charge inhibiting function
This function forbids charging connected battery which short-circuited internally battery). When battery voltage becomes (typ.) lower, charging control gate fixed EBpotential forbid charging. Charging performed, when battery voltage battery charge inhibiting voltage (V0INH) higher.
Some battery providers recommend charging completely discharged batteries. Please refer battery providers before selection battery charging function. battery charging function higher priority than abnormal charge current detection function. Consequently, product with battery charging function charges battery abnormal charge current cannot detected during battery voltage most lower). When battery connected first time, enter normal condition which discharging possible. this case, voltage equal voltage (short pins connect charger) enter normal condition.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Operation Timing Chart
1-1. Overcharge overdischarge detection (for products with power-down function)
Battery voltage
harger connected Load connected ercharge detection delay erdischarg detection delay
Mode
Note:
ormal mode, vercharge mode, verdischarge mode, charger assumed charge with constant current.
vercurrent mode
Figure 1-2. Overcharge overdischarge detection (for products without power-down function)
Load
Mode
Figure Seiko Instruments Inc.
Overcurrent detection
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Battery voltage
VSHORT VIOV2 VIOV1
Charger connection Load connection
Overcurrent detection delay time (tIOV1)
Overcurrent detection delay time (tIOV2)
Load short-circuiting detection delay time (tSHORT)
Mode
Note: Normal mode, Overcharge mode, Overdischarge mode, Overcurrent mode charger assumed charge with constant current.
Figure Charger detection
Battery voltage
VCHA
Charger connection Load connection
Overdischarge detection delay time (tDL) voltage VCHA Overdischarge released overdischarge detection voltage (VDL)
Mode
Note: Normal mode, Overcharge mode, Overdischarge mode, Overcurrent mode charger assumed charge with constant current.
Figure Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Abnormal charge current detection
Battery voltage
VCHA
Charger connection Load connection
Abnormal charging current detection delay time Overdischarge detection delay time (tDL) Overcharge detection delay time (tCU))
Mode
Note: Normal mode, Overcharge mode, Overdischarge mode, Overcurrent mode charger assumed charge with constant current.
Figure
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Battery Protection Connection Example
Battery
S-8241 Series
FET1
FET2
Figure Table Constant
Symbol Parts MOS_FET Purpose Recomm ended min. max. Remarks Threshold voltage overdischarge detection voltage. Withstand voltage between gate source Charger voltage Threshold voltage overdischarge detection voltage. Withstand voltage between gate source Charger voltage Relation should maintained.
FET1
Charge control
FET2
MOS_FET Resistor Capacitor Resistor
Discharge control Protection power fluctuation Protection power fluctuation Protection charger reverse connection
0.01
value
Install capacitor 0.01 higher between VSS. suppress current flow caused reverse connection charger, resistance within range from
with threshold voltage lower used, fail charging current. with threshold voltage equal higher than overdischarge detection voltage used, discharging stop before overdischarge detected. withstand voltage between gate source lower than charger voltage, break. higher resistance than charger connected reversely, current flows from charger voltage between exceed absolute maximum rating. Install resistor higher protection. high resistance, overcharge detection voltage increases current consumption. capacitor less than 1µF, oscillate when load short-circuiting detected, charger connected reversely, overcurrent detected. capacitor 0.01 higher should installed. some types batteries oscillation stop unless capacity increased. capacity evaluating actual application. less than current which bigger than power dissipation flows through break when charger connected reversely. resistor bigger than installed charging current when high-voltage charger connected.
Caution above connection diagram constant will guarantee successful operation. Perform thorough evaluation using actual application constant.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Precautions
attention operating conditions input/output voltage load current that power loss does exceed power dissipation package. apply electrostatic discharge this that exceeds performance ratings built-in electrostatic protection circuit. Seiko Instruments Inc. shall responsible patent infringement products including S-8241 series connection with method using S-8241 series such products, product specifications country destination thereof.
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Characteristic (typical characteristic)
Detection/release voltage temperature characteristics
Overcharge detection voltage temperature Overcharge release voltage temperature
4.33 4.31
4.23 4.21
4.29 4.27 4.25 4.23
4.19 4.17 4.15 4.13
Ta(°C)
Overdischarge detection voltage temperature
Ta(°C)
Overdischarge release voltage temperature
2.40 2.36
2.50 2.46
2.28 2.24 2.20
2.32
2.42 2.38 2.34 2.30
Ta(°C)
Overcurrent detection voltage temperature
Ta(°C)
Overcurrent detection voltage temperature
0.110 0.105
0.60 0.55
VIOV1
0.100 0.095 0.090
VIOV2
0.50 0.45 0.40
Ta(°C) Current consumption temperature characteristics
Current consumption Temperature normal mode
Ta(°C)
Current consumption Temperature power-down mode
0.10 0.08
IOPE (µA)
IPDN (µA) Ta(°C)
0.06 0.04 0.02 0.00
Ta(°C)
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Current comsumption Power voltage characteristics (Ta=25°C)
Current consumption power supply volatge dependency VM=VSS
IOPE (µA)
VDD(V) Detection/release delay time temperature characteristics
Overcharge detection delay time temperature Overcharge release delay time temperature
(ms)
Ta(°C)
Overdischarge detection delay time temperature
Ta(°C)
Overdischarge release delay time temperature
(ms)
Ta(°C)
Overcurrent detection delay time temperature
Ta(°C)
Overcurrent release delay time temperature
tIOV1 (µs) Release
tIOV1 (ms)
Ta(°C)
Ta(°C)
Seiko Instruments Inc.
BATTERY PROTECTION SINGLE CELL PACK S-8241 Series
Load short-circuiting delay time temperature
Overcurrent detection delay time temperature
tIOV2 (ms)2
tSHORT (µs)
Ta(°C) Delay time power-voltage characteristics(Ta=25°C)
Overcurrent detection delay time power supply voltage dependency
Ta(°C)
Overcurrent detection delay time power supply voltage dependency
tIOV1 (ms)
tIOV2 (ms)
VDD(V)
pin/DO output current characteristics(Ta=25°C)
VDD(V)
source current characteristics
-1.4 -1.2 -1.0 VDD=3.5V,VSS=VM=0V
sink current characteristics
VDD=4.5V,VSS=VM=0V
-0.8 (mA)-0.6
-0.4 -0.2
(µA)
VCO(V) source current characteristics
-1.8 -1.6 -1.4 -1.2 -1.0 (mA)-0.8 -0.6 -0.4 -0.2 VDD=3.5V,VSS=VM=0V
VCO(V) sink current characteristics
VDD=1.8V,VSS=VM=0V
(mA)
VDO(V)
Seiko Instruments Inc.
VDO(V)
2.9±0.2 1.9±0.2
0.16 -0.06
+0.1
0.95±0.1 0.4±0.1
MP005-A-P-SD-1.2
TITLE SCALE UNIT
SOT235-A-PKG Dimensions MP005-A-P-SD-1.2
Seiko Instruments Inc.
4.0±0.1(10 pitches:40.0±0.2)
+0.1
2.0±0.05
0.25±0.1
+0.2
4.0±0.1 1.4±0.2
3.2±0.2
Feed direction
MP005-A-C-SD-2.1
TITLE SCALE UNIT
SOT235-A-Carrier Tape MP005-A-C-SD-2.1
Seiko Instruments Inc.
12.5max.
Enlarged drawing central part
9.0±0.3
(60°)
(60°)
MP005-A-R-SD-1.1
TITLE SCALE UNIT
SOT235-A-Reel MP005-A-R-SD-1.1
QTY. 3,000
Seiko Instruments Inc.
2.0±0.2 1.3±0.1
0.65 0.65
-0.05
+0.1
PN005-A-P-SD-1.1
TITLE SCALE UNIT
SON5A-A-PKG Dimensions PN005-A-P-SD-1.1
Seiko Instruments Inc.
2.0±0.1
4.0±0.1
0.2±0.05
4.0±0.1 1.1±0.1
(2.25)
2.05±0.1
Feed direction
PN005-A-C-SD-1.1
TITLE SCALE UNIT
SON5A-A-Carrier Tape PN005-A-C-SD-1.1
Seiko Instruments Inc.
12.5max.
Enlarged drawing central part
9.0±0.3
PN005-A-R-SD-1.1
TITLE SCALE UNIT
SON5A-A-Reel PN005-A-R-SD-1.1
QTY. 3000
Seiko Instruments Inc.
information described herein subject change without notice. Seiko Instruments Inc. responsible problems caused circuits diagrams described herein whose related industrial properties, patents, other rights belong third parties. application circuit examples explain typical applications products, guarantee success specific mass-production design. When products described herein regulated products subject Wassenaar Arrangement other agreements, they exported without authorization from appropriate governmental authority. information described herein other purposes and/or reproduction copying without express permission Seiko Instruments Inc. strictly prohibited. products described herein cannot used part device equipment affecting human body, such exercise equipment, medical equipment, security systems, equipment, apparatus installed airplanes other vehicles, without prior written permission Seiko Instruments Inc. Although Seiko Instruments Inc. exerts greatest possible effort ensure high quality reliability, failure malfunction semiconductor products occur. user these products should therefore give thorough consideration safety design, including redundancy, fire-prevention measures, malfunction prevention, prevent accidents, fires, community damage that ensue.
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