FS302 Series Datasheet FS302 Series Datasheet V1.5 Lithium B

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FS302 Series Datasheet FS302 Series Datasheet V1.5 Lithium B

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FS302 Series Datasheet
FS302 Series Datasheet V1.5
Lithium Battery Protection
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TD0204-0403 Ver.
Description
FS302 Series Datasheet
FS302 series lithium lithium polymer rechargeable battery protection with high accurate voltage detection delay circuits. These suitable protection single cell lithium lithium polymer battery packs from over charge, over discharge, over current.
1-Cell Protection
Package Model SOT-23-6 FS302 4.250±0.030 4.300±0.030 4.280±0.050 4.050±0.1 4.100±0.1 4.080±0.1 2.35±0.1 2.4±0.1 2.36±0.1 2.9±0.1 3.0±0.1 2.95±0.1 150±30 200±30 150±30 Overcharge detection voltage [VOCU] 4.250±0.025 4.350±0.030 4.350±0.050 Overcharge release voltage [VOCR] 4.050±0.1 4.150±0.1 4.150±0.1 Overdischarge Overdischarge Overcurrent detection release detection voltage voltage voltage [VOI1] (mV) [VODR] [VODL] 2.4±0.1 2.4±0.1 2.4±0.1 3.0±0.1 3.0±0.1 3.0±0.1 200±30 150±30 150±30
Overcharge overdischarge voltages overcurrent detection voltage changed request.
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Features
FS302 Series Datasheet
supply current Overcharge detection voltageVOCU Overcharge release voltageVOCR Overdischarge detection voltageVODL Overdischarge release voltageVODR Over current detection voltageVOI1
Operation: 3.0uA typ. @VDD=3.9V Power-down mode: 0.3uA typ. @VDD=2.0V 4.0V~4.4V, Accuracy ±25/±30mV VOCR, Accuracy ±100mV 2.3V~2.5V, Accuracy ±100mV VODR, Accuracy ±100mV VOI1 1.35V CTD=0.01uF,100ms -0.6V >500K 8.0V SOT-23-6
Over current 2(Short Current) detection voltageVOI2 Overcharge detection delay time Charger detection voltage
Reset resistance Over current protection Wide supply voltage range Small package
Applications
Protection One-Cell Lithium-Ion Battery Pack
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Block Diagram
FS302 Series Datasheet
Over current (Short Current) Delay Circuit
Overdischarge Delay Circuit
Over current Delay Circuit
Overcharge Delay Circuit
Charger Detected
CONTROL LOGIC
Configuration
Symbol Description gate connection discharge control Input current sense, charger detect gate connection charge control external capacitor setting output delay VOCU Positive power input Negative power input
SOT-23-6 VIEW
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FS302 Series Datasheet
Typical Application Circuit
VBAT+
BATTERY 0.1uF 0.01uF
FS302
0.1uF
VBAT-
Absolute Maximum Ratings
Item Supply voltage between output voltage output voltage input voltage Operating Temperature Range Storage Temperature Range Symbol VCSI Rating VSS-0.3 VSS+12 VDD-15 VDD+0.3 VSS-0.3 VDD+0.3 VDD-15 VDD+0.3 +125 Unit
Electrical Characteristic
(Unless otherwise specified Ta=25, model name FS302BR)
PARAMETER CURRENT CONSUMPTION Supply Current VDD=3.9V CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
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Power-Down Current OPERATING VOLTAGE
FS302 Series Datasheet
VDD=2.0V
Operating voltage between DETECTION VOLTAGE Overcharge detection voltage Overcharge release voltage Overdischarge detection voltage Overdischarge release voltage Over current detection voltage Over current (Short Current) detection voltage Reset resistance Over current protection Charger detection voltage DELAY TIME Overcharge detection delay time Overdischarge detection delay time Over current detection delay time Over current (Short Current) detection delay time OTHER output voltage output voltage output voltage output voltage CTD=0.01uF VDD=3.6V 2.0V VDD=3.6V VDD=3.6V VDD=3.6V VDD=3.6V
VOCU VOCR VODL VODR VOI1 VOI2 Rshort
4.32 4.05 2.30 2.90 0.12 1.25 -0.8
4.35 4.15 2.40 3.00 0.15 1.35 -0.6
4.38 4.25 2.50 3.10 0.18 1.45 -0.4
TOI1 TOI2
Voh1 Vol1 Voh2 Vol2
VDD-0. VDD-0. 0.01 VDD-0. VDD-0. 0.01
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FS302 Series Datasheet
State Diagram Operation
Abnormal charge current condition,
(OC=0)
VCSI<VCH(-0.6v) t>TOC(100ms) VCSI>VCH(-0.6v) OD=0 VCSI shorted RCSID (300k). (Weak pull high VDD)
Over charge condition, (OC=0)
VCSI>VOI1(0.15v) VDD<VOCU(4.35v)
VDD>VOCU(4.35v) t>TOC(100ms)
VDD<VOCR(4.15v)
Over discharge condition, (OD=0)
VCH<VCSI<VOI2
VDD<VODL(2.4v) t>TOD(10ms) VDD>VODR(3.0v)
Normal condition
(OD=OC=1)@ VODL<VDD<VOCU VCH<VCSI<VOI1
VCSI>VOI2
VCSI<VCH(-0.6v)
Power down condition
OD=0 IDD<= IPD(0.3uA) VCSI shorted RCSID (300k). (Weak pull high VDD)
VDD>VODL
VCSI>VOI1(0.15v) t>tOI1(10ms)
VCSI>VOI2 t>tOI2(5us)
Load impedence >500K
Over current I,II SHORT, (OD=0) Charger detected overdischarge
OD=0 Overdischarge hystersis released. Trickle charging automatic charger.
FS302BR Operation State Diagram
Description Operation
11.1 Normal Condition
VODL<VDD<VOCU VCH<VCSI<VOI1, both turned charging discharging processes operated normally.
11.2 Overcharge Detection
battery voltage detected from reaches certain value, charging from charger inhibited overcharge protection. When larger than VOCU over delay time TOC, turned off.
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FS302 Series Datasheet
11.3 Release Overcharge Condition
There ways return normal condition from overcharge condition.
battery self discharging VDD<VOCR occurs, turned back normal condition. Remove charger connected load. VOCR<VDD<VOCU VCSI>VOI1 occurs, turned back normal condition.
11.4 Overdischarge Detection
battery voltage detected from lower certain value, discharge load stops. smaller than VODL over delay time TOD, turned off. meanwhile, pulled internal resistance, RCSID. VCSI>VOI2, protection enters into Power-down mode. (Its current consumption lower than 0.3uA).
11.5 Release Power-down mode
charger connected while battery remains Power-down mode. VCH<VCSI<VOI2 VDD<VODR occur, still releases Power-down mode. VDD>VODR occurs, turned back normal condition.
11.6 Charger Detection
charger connected battery remained Power-down mode, voltages will become VCSI<VCH VDD>VODL. turned back normal condition.
11.7 Abnormal Charging Condition
charger connected battery normal condition, VCSI<VCH occurs delay time longer than TOC, turned off.
11.8 Over Current/Short Current Detection
When discharging current large during discharging under normal condition voltage detected from larger than VOIX (VIO1 VIO2) over certain delay time TOIX (TIO1 TIO2), means over current/short current condition occurred. turned off. pulled internal resistance, RCSIS.
11.9 Release Over Current/Short Current Condition
While protection remains Over Current/Short Current condition load removed impedance between VBAT+ VBAT- larger than 500K VCSI<VOI1, turned back normal condition.
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FS302 Series Datasheet
Note When battery connected first time, enter normal condition (not dischargeable condition). this occurs, voltage equal voltage (short pins connect charger) enter normal condition. Timing Diagram
12.1 Overcharge Condition
Charger Load
Self Discharging
Normal Condition
VOCU Battery Voltage VOCR VODR VODL
Self Discharge
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FS302 Series Datasheet
Load Discharging Normal Condition
12.2 Overcharge Condition
Charger Load
VOCU Battery Voltage VOCR VODR VODL
VOI1
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FS302 Series Datasheet
Charging Charger Normal Condition
12.3 Overdischarge Condition
Charger Load
VOCU Battery Voltage VOCR VODR VODL
VOI2
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FS302 Series Datasheet
Abnormal Charging Normal Condition
12.4 Overdischarge Condition
Charger Load
VOCU Battery Voltage VOCR VODR VODL
VOI2
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FS302 Series Datasheet
Normal Condition
12.5 Over Current Condition
Charger Load
VOCU Battery Voltage VOCR VODR VODL
VOI2 VOI1
TOI1
TOI2
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Dimension
FS302 Series Datasheet
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FS302 Series Datasheet
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FS302 Series Datasheet FS302 Series Datasheet V1.5 Lithium B

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