S-8233A Series S-8233A Series series lithium-ion rechargeable bat

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S-8233A Series S-8233A Series series lithium-ion rechargeable bat

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BATTERY PROTECTION 3-SERIAL-CELL PACK
S-8233A Series
S-8233A Series series lithium-ion rechargeable battery protection incorporating high-accuracy voltage detection circuits delay circuits. suitable 3-serial-cell lithium-ion battery pack.
Features
Internal high-accuracy voltage detection circuit Over charge detection voltage 4.10 0.05 4.35 0.05 step Over charge release voltage 3.85 0.10 4.35 0.10 step (The over charge release voltage selected within range where difference from over charge detection voltage Over discharge detection voltage 2.00 0.08 2.70± 0.08 step Over discharge release voltage 2.00 0.10 3.70± 0.10 step (The over discharge release voltage selected within range where difference from over discharge detection voltage Over current detection voltage 0.15 ±0.015 ±0.05 mV-step High input-voltage device (absolute maximum rating: Wide operating voltage range: delay time every detection external capacitor. Three over current detection levels (protection short-circuiting) Internal charge/discharge prohibition circuit control terminal function charging batteries from available. current consumption Operation max. (+25 Power-down max. (+25
Applications
Lithium-ion rechargeable battery packs
Packages
Package Name 14-Pin 16-Pin TSSOP Package FE014-A FT016-A Drawing Code Tape FE014-A FT016-A Reel FE014-A FT016-A
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series Block Diagram
Reference voltage Battery Over charge
Over current delay circuit
Over current detection circuit
Battery Over discharge
Over current1, delay circuit
COVT
Battery Over charge Battery Over charge
Over discharge delay circuit
Control Logic
Over charge delay circuit
Battery Over discharge Reference voltage
Battery Over charge Battery Over charge
Battery Over discharge Reference voltage
Battery Over charge
Floating detection circuit
Figure Remark delay time over current detection fixed internal circuit. delay time cannot changed external capacitor.
Seiko Instruments Inc.
Rev.3.2_10 Product Name Structure
Product name S-8233A
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
direction tape specifications*1 Package name (abbreviation) 14-Pin 16-Pin TSSOP Serial code Assigned from alphabetical order Refer taping specifications.
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Product name list 14-Pin Table Product name Parameter S-8233ACFE-TB S-8233ADFE-TB S-8233AEFE-TB S-8233AFFE-TB S-8233AGFE-TB S-8233AIFE-TB S-8233AJFE-TB S-8233AKFE-TB S-8233ALFE-TB S-8233AMFE-TB S-8233ANFE-TB S-8233AOFE-TB S-8233APFE-TB Overcharge Overcharge detection voltage release voltage 4.25±0.05 4.05±0.10 4.10±0.05 4.25±0.05 4.35±0.05 4.25±0.05 4.25±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.25±0.05 4.10
Overdischarge detection voltage 2.00±0.08 2.00±0.08 2.30±0.08 2.40±0.08 2.40±0.08 2.30±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.70±0.08 2.70±0.08
Overdischarge release voltage 2.30±0.10 2.30±0.10 2.70±0.10 2.70±0.10 2.70±0.10 3.00±0.10 2.70±0.10 2.70±0.10 2.70±0.10 2.70±0.10 2.40±0.10 2.70±0.10 3.00±0.10 3.00±0.10
Overcurrent battery detection voltage1 charge function VIOV1 0.20±0.02 0.20±0.02 0.15±0.015 0.50±0.05 0.40±.0.04 0.15±0.015 0.30±0.03 0.15±0.015 0.40±0.04 0.30±0.03 0.15±0.015 0.15±0.015 0.30±0.03 0.30±0.03 Available Available Available Available Available Available Available Available
4.10±0.10 4.05±0.10 4.05±0.10 4.10±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10
S-8233AQFE-TB 4.25±0.05 4.25 Without over charge detection hysteresis.
Remark Please contact marketing department products with detection voltage value other than those specified above. 16-Pin TSSOP Table Product name Parameter S-8233ACFT-TB S-8233ADFT-TB S-8233AEFT-TB S-8233AFFT-TB S-8233AGFT-TB S-8233AIFT-TB S-8233AJFT-TB S-8233AKFT-TB S-8233ALFT-TB S-8233AMFT-TB S-8233ANFT-TB S-8233AOFT-TB S-8233APFT-TB Overcharge Overcharge detection voltage release voltage 4.25±0.05 4.05±0.10 4.10±0.05 4.25±0.05 4.35±0.05 4.25±0.05 4.25±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.35±0.05 4.25±0.05 4.10
Overdischarge detection voltage 2.00±0.08 2.00±0.08 2.30±0.08 2.40±0.08 2.40±0.08 2.30±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.40±0.08 2.70±0.08 2.00±0.08
Overdischarge release voltage 2.30±0.10 2.30±0.10 2.70±0.10 2.70±0.10 2.70±0.10 3.00±0.10 2.70±0.10 2.70±0.10 2.70±0.10 2.70±0.10 2.40±0.10 2.70±0.10 3.00±0.10 2.70±0.10
Overcurrent battery detection voltage1 charge function VIOV1 0.20±0.02 0.20±0.02 0.15±0.015 0.50±0.05 0.40±.0.04 0.15±0.015 0.30±0.03 0.15±0.015 0.40±0.04 0.30±0.03 0.15±0.015 0.15±0.015 0.30±0.03 0.30±0.03 Available Available Available Available Available Available Available Available
4.10±0.10 4.05±0.10 4.05±0.10 4.10±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10 4.05±0.10
S-8233ARFT-TB 4.35±0.05 4.05±0.10 Without over charge detection hysteresis.
Remark Please contact marketing department products with detection voltage value other than those specified above. Seiko Instruments Inc.
Rev.3.2_10 Assignment
14-Pin view
COVT
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Figure
Table Symbol description Connects gate discharge control (CMOS output) Connects gate charge control (Nch open-drain output) Detects voltage between VMP(Over current detection pin) COVT Connects capacitor over current detection1delay circuit Connects capacitor over discharge detection delay circuit Connects capacitor over charge detection delay circuit Negative power input, connects negative voltage battery Charge/discharge control signal input Battery conditioning signal output Connects battery negative voltage battery positive voltage Battery conditioning signal output Connects battery negative voltage battery positive voltage Battery conditioning signal output Positive power input connects battery positive voltage
Table Symbol description Connects gate discharge control (CMOS output) connection Connects gate charge control (Nch open-drain output) Detects voltage between VMP(Over current detection pin) COVT Connects capacitor over current detection1 delay circuit Connects capacitor over discharge detection delay circuit Connects capacitor over charge detection delay circuit Negative power input, connects negative voltage battery Charge/discharge control signal input Battery conditioning signal output Connects battery negative voltage battery positive voltage Battery conditioning signal output Connects battery negative voltage battery positive voltage Battery conditioning signal output connection Positive power input connects battery positive voltage electrically open. connected VSS.
16-Pin TSSOP view
COVT
Figure
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series Absolute Maximum Ratings
Table Parameter Input voltage between Input voltage Input terminal voltage output terminal voltage output terminal voltage output terminal voltage output terminal voltage output terminal voltage Power dissipation Operating temperature range Symbol VVMP VCD1 VCD2 VCD3 VDOP VCOP Topr Applicable Pins VC1, VC2, CTL, CCT, CDT, COVT
unless otherwise specified) Absolute Maximum Ratings Unit VSS-0.3 VSS+26 VSS-0.3 VCC+0.3 VSS-0.3 VSS+26 VC1-0.3 VCC+0.3 VC2-0.3 VCC+0.3 VSS-0.3 VCC+0.3 VSS-0.3 VCC+0.3 VSS-0.3 VSS+26 14-Pin 16-Pin TSSOP
Tstg +125 Storage temperature range Caution absolute maximum ratings rated values exceeding which product could suffer physical damage. These values must therefore exceeded under conditions.
Seiko Instruments Inc.
Rev.3.2_10 Electrical Characteristics
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Table unless otherwise specified) Measure- Measurement ment Min. Typ. Max. Unit condition circuit
VCU1-0.05 VCD1-0.10 VDD1-0.08 VDU1-0.10 VCU2-0.05 VCD2-0.10 VDD2-0.08 VDU2-0.10 VCU3-0.05 VCD3-0.10 VDD3-0.08 VDU3-0.10 0.54 -1.0 -0.5 VCU1 VCU1+0.05 VCD1 VCD1+0.10 VDD1 VDD1+0.08 VDU1 VDU1+0.10 VCU2 VCU2+0.05 VCD2 VCD2+0.10 VDD2 VDD2+0.08 VDU2 VDU2+0.10 VCU3 VCU3+0.05 VCD3 VCD3+0.10 VDD3 VDD3+0.08 VDU3 VDU3+0.10 0.66 mV/°C mV/°C
Item
Detection voltage Over charge detection voltage1 Over charge release voltage1 Over discharge detection voltage1 Over discharge release voltage1 Over charge detection voltage Over charge release voltage Over discharge detection voltage Over discharge release voltage Over charge detection voltage3 Over charge release voltage3 Over discharge detection voltage3 Over discharge release voltage3 Over current detection voltage1 Over current detection voltage3 Voltage temperature factor Voltage temperature factor Delay time Over charge detection delay time1 Over charge detection delay time Over charge detection delay time3 Over discharge detection delay time1 Over discharge detection delay time Over discharge detection delay time3 Over current detection delay time1 Over current detection delay time Over current detection delay time3 Operating voltage Operating voltage between Current consumption Current consumption (during normal operation) Current consumption cell Current consumption cell Current consumption power down Internal resistance Resistance between Resistance between Input voltage CTL"H" Input voltage CTL"L" Input voltage
Symbol
Condition
VCU1 VCD1 VDD1 VDU1 VCU2 VCD2 VDD2 VDU2 VCU3 VCD3 VDD3 VDU3 VIOV1 VIOV2 VIOV3 TCOE1 TCOE2 tCU1 tCU2 tCU3 tDD1 tDD2 tDD3 tIOV1 tIOV2 tIOV3 VDSOP
4.10 4.35 Adjustment 3.85 4.35 Adjustment 2.00 2.70 Adjustment 2.00 3.70 Adjustment 4.10 4.35 Adjustment 3.85 4.35 Adjustment 2.00 2.70 Adjustment 2.00 3.70 Adjustment 4.10 4.35 Adjustment 3.85 4.35 Adjustment 2.00 2.70 Adjustment 2.00 3.70 Adjustment 0.15 0.50V Adjustment Reference Reference Ta=-20 70°C Ta=-20 70°C CCCT=0.47 CCCT=0.47 CCCT=0.47 CCDT=0.1 CCDT=0.1 CCDT=0.1 CCOVT=0.1
VIOV1 VIOV1 VIOV1
Over current detection voltage
gate capacitor =2000
IOPE ICELL2 ICELL3 IPDN RVCM RVSM
V1=V2=V3=3.5 V1=V2=V3=3.5 V1=V2=V3=3.5 V1=V2=V3=1.5 V1=V2=V3=3.5 V1=V2=V3=3.5 V1=V2=V3=1.5 V1=V2=V3=1.5
-300 -300
1.40 0.80 1.40 0.80
0.90 0.50 0.90 0.50
0.40 0.20 0.40 0.20 VCCx0.8
VCTL(H) VCTL(L)
VCCx0.2
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Table unless otherwise specified) Measure- Measurement ment Typ. Max. Unit condition circuit
VSS+0.1 VSS+0.1
Item
Output voltage DOP"H" voltage DOP"L" voltage COP"L" voltage LEAK current CD1"H" voltage CD1"L" voltage 2"H" voltage 2"L" voltage CD3"H" voltage CD3"L" voltage battery charging function charging start voltage
Symbol
Condition
Min.
VDO(H) VDO(L) VCO(L) ICOL VCD1(H) VCD1(L) VCD2(H) VCD2(L) VCD3(H) VCD3(L) V0CHAR
IOUT=10 IOUT=10 IOUT=10 V1=V2=V3=4.5 IOUT=0.1 IOUT=10 IOUT=0.1 IOUT=10 IOUT=0.1 IOUT=10
VCC-0.5
-0.5
-0.5
VC1+0.1 VC2+0.1
-0.5
VSS+0.1
over current detection voltage 0.50 both over current detection voltages 0.54 0.55 VIOV2 VIOV1. Voltage temperature factor indicates over charge detection voltage, over charge release voltage, over discharge detection voltage, over discharge release voltage. Voltage temperature factor indicates over current detection voltage. logic must established operating voltage. This spec applies only battery charging function available type.
Seiko Instruments Inc.
Rev.3.2_10 Measurement Circuits
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Measurement Measurement circuit under normal condition. Increase from gradually. voltage when over charge detection voltage (VCU1). Decrease gradually. voltage when over charge release voltage (VCD1). Further decrease voltage when over discharge voltage (VDD1). Increase gradually. voltage when over discharge release voltage (VDU1). Remark voltage change rate less. Measurement Measurement circuit under normal condition. Increase from gradually. voltage when over charge detection voltage (VCU2). Decrease gradually. voltage when over charge release voltage (VCD2). Further decrease voltage when over discharge voltage (VDD2). Increase gradually. voltage when over discharge release voltage (VDU2). Remark voltage change rate less. Measurement Measurement circuit under normal condition. Increase from gradually. voltage when over charge detection voltage (VCU3). Decrease gradually. voltage when over charge release voltage (VCD3). Further decrease voltage when over discharge voltage (VDD3). Increase gradually. voltage when over discharge release voltage (VDU3). Remark voltage change rate less. Measurement Measurement circuit under normal condition. Increase from gradually. voltage when 'H', over current detection voltage (VIOV1). under normal condition. COVT terminal VSS, increase from gradually. voltage when over current detection voltage (VIOV2). under normal condition. COVT terminal VSS, increase gradually from voltage when over current detection voltage (VIOV3). Measurement Measurement circuit under normal condition measure current consumption. normal condition current consumption (IOPE), cell current consumption (ICELL2), cell current consumption (ICELL3). under over discharge condition. Current consumption power-down current consumption (IPDN). Measurement Measurement circuit 10.5 under normal condition. V4/I4 internal resistance between (RVCM). under over discharge condition. (4.5-V4)/I4 internal resistance between (RVSM).
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Measurement Measurement circuit OFF, under normal condition. Increase from gradually. voltage when DOP'L' voltage (VD0(L)). OFF, VIOV2+0.1 under over current condition. Increase from gradually. voltage when DOP'H' voltage (VDO(H)). Measurement Measurement circuit under normal condition. Increase from gradually. voltage when COP'L' voltage (VC0(L)). Measurement Measurement circuit under normal condition. Increase from immediately (within µs). time after becomes until goes over charge detection delay time (tCU1). under normal condition. Decrease from immediately (within µs). time after becomes until goes over discharge detection delay time (tDD1). (10) Measurement Measurement circuit under normal condition. Increase from immediately (within µs). time after becomes until goes over charge detection delay time (tCU2). under normal condition. Decrease from immediately (within µs). time after becomes until goes over discharge detection delay time (tDD2). (11) Measurement Measurement circuit under normal condition. Increase from immediately (within µs). time after becomes until goes over charge detection delay time (tCU3). under normal condition. Decrease from immediately (within µs). time after becomes until goes over discharge detection delay time (tDD3). (12) Measurement Measurement circuit under normal condition. Increase from 0.55 immediately (within µs). time after becomes 0.55 until goes over current detection delay time (tI0V1). under normal condition. Increase from 0.75 immediately (within µs). time after becomes 0.75 until goes over current detection delay time (tIOV2) inhibit over discharge detection. increase from immediately (within decrease time. time after becomes until goes over current detection delay time (tIOV3).
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
(13) Measurement Measurement circuit OFF, under normal condition. Increase from gradually. voltage when CD1'L' voltage (VCD1(L)) OFF, under normal condition. Increase from gradually. voltage when CD2'L' voltage (VCD2(L)). OFF, under normal condition. Increase from gradually. voltage when CD3'L' voltage (VCD3(L)). OFF, under over charge condition. Increase from gradually. voltage when CD1'H' voltage (VCD1(H)). OFF, under over charge condition. Increase from gradually. voltage when CD2'H' voltage (VCD2(H)). OFF, under over charge condition. Increase from gradually. voltage when CD3'H' voltage (VCD3(H)). (14) Measurement Measurement circuit under over charge condition. current flowing terminal LEAK current (ICOL). (15) Measurement Measurement circuit decrease gradually. voltage when (VSS higher) charge start voltage (V0CHAR).
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
S-8233A
S-8233A
COVT
COVT
Measurement circuit
COVT S-8233A
Measurement circuit
S-8233A
COVT
Measurement circuit
Measurement circuit
S-8233A
S-8233A
C1=0.47 C2=0.1 C3=0.1
COVT
COVT
Measurement circuit Figure (1/2) Seiko Instruments Inc.
Measurement circuit
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
S-8233A C1=0.47 C2=0.1 C3=0.1 COVT
S-8233A
COVT
Measurement circuit
Measurement circuit
S-8233A
S-8233A
COVT
COVT
Measurement circuit Figure (2/2)
Measurement circuit
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Operation
Remark Refer "Battery Protection Connection Example". Normal condition This monitors voltages three serially-connected batteries discharge current control charging discharging. voltages three batteries range from over discharge detection voltage (VDD) over charge detection voltage (VCU), current flowing through batteries becomes equal lower than specified value (the terminal voltage equal lower than over current detection voltage charging discharging FETs turn this condition, charging discharging carried freely. This condition called normal condition. this condition, terminals shorted RVCM resistor. Over current condition This provided with three over current detection levels (VIOV1,VIOV2 VIOV3) three over current detection delay time (tIOV1,tIOV2 tIOV3) corresponding each over current detection level. discharging current becomes equal higher than specified value (the terminal voltage equal higher than over current detection voltage) during discharging under normal condition continues over current detection delay time (tIOV) longer, discharging turns stop discharging. This condition called over current condition. terminals shorted RVCM resistor this time. charging turns off. When discharging load connected, terminal voltage equals potential. over current condition returns normal condition when load released impedance between terminals (see Figure connection example) higher. When load released, terminal, which terminal shorted with RVCM resistor, goes back potential. detects that terminal potential returns over current detection voltage (VIOV1) lower over current detection voltage (VIOV2) lower COVT terminal fixed level over current detection inhibited) returns normal condition. Over charge condition battery voltages becomes higher than over charge detection voltage (VCU) during charging under normal condition continues over charge detection delay time (tCU) longer, charging turns stop charging. This condition called over charge condition. level signal output conditioning terminal corresponding battery which exceeds over charge detection voltage until battery becomes equal lower than over charge release voltage (VCD). battery discharged connecting externally. discharging current limited inserting R11, resistors (see Figure connection example). terminals shorted RVCM resistor under over charge condition. over charge condition released cases: battery voltage which exceeded over charge detection voltage (VCU) falls below over charge release voltage (VCD), charging turns normal condition returns. battery voltage which exceeded over charge detection voltage (VCU) equal higher than over charge release voltage (VCD), charger removed, load placed, discharging starts, charging turns normal condition returns. release mechanism follows: discharge current flows through internal parasitic diode charging immediately after load installed discharging starts, terminal voltage decreases about from terminal voltage momentarily. detects this voltage (over current detection voltage higher), releases over charge condition returns normal condition. Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Over discharge condition battery voltages falls below over discharge detection voltage (VDD) during discharging under normal condition continues over discharge detection delay time (tDD) longer, discharging turns discharging stops. This condition called over discharge condition. When discharging turns off, terminal voltage becomes equal voltage IC's current consumption falls below power-down current consumption (IPDN). This condition called power-down condition. terminals shorted RVSM resistor under over discharge power-down conditions. power-down condition canceled when charger connected voltage between higher (over current detection voltage When battery voltages becomes equal higher than over discharge release voltage (VDU) this condition, over discharge condition changes normal condition. Delay circuits over charge detection delay time (tCU1 tCU3), over discharge detection delay time (tDD1 tDD3), over current detection delay time (tIOV1) changed with external capacitors C6). delay times calculated following equations: Min. Typ. Max. tCU[s] =Delay factor 1.07, 2.13, [uF] tDD[s] =Delay factor 0.20, 0.40, [uF] tIOV1[s]=Delay factor 0.10, 0.20, [uF] Caution: delay time over current detection fixed internal circuit. delay time cannot changed external capacitor. terminal terminal floated under normal condition, pulled potential both charging discharging FETs turn inhibit charging discharging. Both charging discharging also inhibited applying terminal terminal externally. this time, terminals shorted RVCM resistor. When terminal becomes equal potential, charging discharging enabled back their appropriate conditions battery voltages.
Caution Please note unexpected behavior might occur when electrical potential difference between ('L' level) generated through external filter (RVSS CVSS) result input voltage fluctuations.
battery charging function This function used recharge three serially-connected batteries after they self-discharge When charging start voltage (V0CHAR) higher applied between connecting charger, charging gate fixed potential. When voltage between gate sources charging becomes equal higher than turn-on voltage charger voltage, charging turns start charging. this time, discharging turns charging current flows through internal parasitic diode discharging FET. battery voltages become equal higher than over discharge release voltage (VDU), normal condition returns. Caution: products without battery charging function, resistance between between lower than products with battery charging function. causes that over charge detection voltage increases drop voltage (see Figure connection example) with sink current VMP. output undefined below VCC-VSS voltage products without battery charging function. Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Voltage temperature factor Voltage temperature factor indicates over charge detection voltage, over charge release voltage, over discharge detection voltage, over discharge release voltage. Voltage temperature factor indicates over current detection voltage. Voltage temperature factors expressed oblique line parts Figure
Voltage temperature factor over charge detection voltage
+0.1 mV/°C
VCU25
VCU25 over charge detection voltage 25°C
-0.1 mV/°C
Figure
[°C]
Seiko Instruments Inc.
Rev.3.2_10 Timing Chart
Overcharge detection
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
battery terminal terminal VCHA VIOV1 Charger connected Load connected Mode
battery
battery
Battery voltage
Hi-z
Hi-z
Hi-z
Hi-z
terminal
Delay
Delay
Delay
Delay
Delay
Normal mode,
Over charge mode,
Over discharge mode,
Over current mode
Remark charger assumed charge with constant current. VCHA indicates open voltage charger.
Figure Overdischarge detection
Battery voltage terminal terminal VCHA VIOV1 Charger connected Load connected Mode*1 Normal mode, Over charge mode, Over discharge mode, Over current mode Remark charger assumed charge with constant current. VCHA indicates open voltage charger. battery battery battery
Hi-z
terminal
Delay
Delay
Delay
Delay
Delay
Figure
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Over current detection
batteries Battery voltage terminal terminal VIOV1 terminal VIOV2 VIOV3 Charger connected Load connected Mode*1 Delay tIOV1 Delay tIOV2 Delay
Hi-z
Hi-z
Hi-z
Hi-z
tIOV3 Inhibit charging discharging
terminal
Normal mode, Over charge mode, Over discharge mode, Over current mode Remark charger assumed charge with constant current. VCHA indicates open voltage charger.
terminal
Figure
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Battery Protection Connection Example
FET-A FET-B FET1 Battery open drain GND: Normal operation Floating: Inhibit charging discharging. S-8233A series FET3 Battery EBCOVT Over discharge delay time setting FET-C High: Inhibit over discharge detection. Over current delay time setting Over charge delay time setting
FET2 Battery
Figure [Description Figure R11, R12, used adjust battery conditioning current. conditioning current during over charge detection given (over charge detection voltage)/R resistance). disable conditioning function, open CD1, CD2, CD3. over charge detection delay time (tCU1 tCU3), over discharge detection delay time (tDD1 tDD3), over current detection delay time (tIOV1) changed with external capacitors C6). electrical characteristics. pull-up resistor that turns FET-B when terminal opened. Connect resistor. used protect charger connected reverse. Connect resistor. capacitor absent, rush current occurs when capacitive load connected enters over current mode. must connected prevent capacitor connected, enter over discharge condition variations battery voltage when over current occurs. this case, charger must connected return normal condition. prevent this, connect least 0.01 capacitor leak current flows between delay capacitor connection terminal (CCT, CDT, COVT) VSS, delay time increases error occurs. leak current must less. Over discharge detection disabled using FET-C. FET-C leak must less. over discharge inhibited using this FET, current consumption does fall below even when battery voltage drops enters over discharge detection mode. must less. protection when terminal voltage higher than voltage. Connect resister. terminal voltage never greater than voltage (ex. connect VSS), without resistance allowed
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Caution above constants changed without notice. electrostatic discharge 2000 higher applied S-8233A series with human body model, unnecessary. been confirmed whether operation normal circuits other than above example connection. addition, example connection shown above constant guarantee proper operation. Perform through evaluation using actual application constant.
Precautions
charger connected over discharge condition battery voltages becomes equal higher than over charge release voltage (VCU) before battery voltage which below over discharge detection voltage (VDD) becomes equal higher than over discharge release voltage (VDU), over discharge over charge conditions entered charging discharging FETs turn off. Both charging discharging disabled. battery voltage which higher than over charge detection voltage (VCU) falls over charge release voltage (VCD) internal discharging, charging turns charger detached over charge over discharge condition, over charge condition released, over discharge condition remains. charger connected again, battery condition monitored after that. charging turns after over charge detection delay time, over charge over discharge conditions entered. battery voltages equal lower than over discharge release voltage (VDU) when they connected first time, normal condition entered. terminal voltage made equal higher than voltage charger connected), normal condition entered. terminal floats power-down mode, pulled charging discharging inhibited. However, over discharge condition becomes effective. charger connected, terminal pulled charging discharging inhibited immediately. apply electrostatic discharge this that exceeds performance ratings built-in electrostatic protection circuit. claims responsibility disputes arising connection with infringement products including this patents owned third party.
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Characteristics (typical characteristics)
Detection voltage temperature characteristics
Overcharge detection voltage temperature
4.35 VCU=4.25[V]
Overcharge release voltage temperature
4.20 VCD=4.10[V]
4.25
4.10
4.15
Ta(°C)
4.00
Ta(°C)
Overdischarge detection voltage temperature
2.45 VDD=2.35[V]
Overdischarge release voltage temperature
2.95 VDU=2.85[V]
2.35
2.85
2.25 Ta(°C)
2.75
Ta(°C)
Overcurrent1 detection voltage temperature
0.35 VIOV1 VIOV1=0.3
Overcurrent2 detection voltage temperature
0.65 VIOV2 VIOV2=0.6
0.30
0.60
0.25 Ta(°C)
0.55 Ta(°C)
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Current consumption temperature characteristics
Current consumption temperature normal mode
IOPE (uA) VCC=10.5
Current consumption temperature power-down mode
IPDN (nA) VCC=4.5
Ta(°C)
Ta(°C)
Delay time temperature characteristics
Overcharge detection time temperature
C=0.47[uF] VCC=11.5
Overdischarge detection time temperature
(ms) C=0.1[uF] VCC=8.5
Ta(°C)
Ta(°C)
Overcurrent1 detection time temperature
tIOV1 (ms) C=0.1[uF] VCC=10.5
Overcurrent2 detection time temperature
VCC=10.5
tIOV2 (ms)
Ta(°C)
Ta(°C)
Seiko Instruments Inc.
BATTERY PROTECTION 3-SERIAL-CELL PACK S-8233A Series
Overcurrent3 (load short) detection time temperature
0.40 VCC=6.0
tIOV3 (ms)
0.25
0.10
Ta(°C)
Delay time power supply voltage
Over current (load short) detection time power supply voltage
=25(°C)
tIOV3(ms)
VCC(V)
Caution Please design applications S-8233A Series with safety mind.
Seiko Instruments Inc.
10.06 (10.5 max.)
-0.02
+0.05
1.27
+0.1 -0.05
FE014-A-P-SD-1.1
TITLE SCALE UNIT
SOP14-A-PKG Dimensions FE014-A-P-SD-1.1
Seiko Instruments Inc.
pitches:40.0±0.1)
+0.1
4.0±0.1
2.0±0.1
0.3±0.05
12.0±0.1 8.8±0.1
2.7±0.1 5.4±0.2
-0.2
+0.4
Feed direction
FE014-A-C-SD-1.1
TITLE SCALE UNIT
SOP14-A-Carrier Tape FE014-A-C-SD-1.1
Seiko Instruments Inc.
17.4±1.0 21.4±1.0 Enlarged drawing central part 2.0±0.5
FE014-A-R-SD-1.1
TITLE SCALE UNIT
SOP14-A-Reel FE014-A-R-SD-1.1
QTY. 2,000
Seiko Instruments Inc.
5.1±0.2
0.17±0.05
0.65
0.22±0.08
FT016-A-P-SD-1.1
TITLE SCALE UNIT
TSSOP16-A-PKG Dimensions FT016-A-P-SD-1.1
Seiko Instruments Inc.
+0.1
4.0±0.1 2.0±0.1
0.3±0.05
8.0±0.1 (7.2) 4.2±0.2 1.5±0.1
-0.2
+0.4
Feed direction
FT016-A-C-SD-1.1
TITLE SCALE UNIT
TSSOP16-A-Carrier Tape FT016-A-C-SD-1.1
Seiko Instruments Inc.
21.4±1.0
17.4±1.0
17.4 -1.5
+2.0
Enlarged drawing central part 2.0±0.5
FT016-A-R-SD-1.1
TITLE SCALE UNIT
TSSOP16-A- Reel FT016-A-R-SD-1.1
QTY. 2,000
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.

S-8233A Series S-8233A Series series lithium-ion rechargeable bat

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