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S-8201

Seiko Instruments
Part Number S-8201
Manufacturer Seiko Instruments
Description Battery Protection IC
Published Jun 26, 2009
Detailed Description Rev.2.0_00 www.DataSheet4U.com BATTERY PROTECTION IC FOR SINGLE-CELL PACK S-8201 Series The S-8201 Series are lithium...
Datasheet PDF File S-8201 PDF File

S-8201
S-8201

Overview
Rev.
2.
0_00 www.
DataSheet4U.
com BATTERY PROTECTION IC FOR SINGLE-CELL PACK S-8201 Series The S-8201 Series are lithium-ion/lithium polymer rechargeable battery protection ICs incorporating highaccuracy voltage detection circuit and delay circuit.
The S-8201 Series are suitable for protection of singlecell lithium ion/lithium polymer battery packs from overcharge, overdischarge and overcurrent.
„ Features (1) Internal high accuracy voltage detection circuit • Overcharge detection voltage 3.
9 V to 4.
4 V (5 mV step), Accuracy ±25 mV (+25 °C), ±30 mV (−5 °C to +55 °C) *1 • Overcharge release voltage 3.
8 V to 4.
4 V , Accuracy ±50mV • Overdischarge detection voltage 2.
0 V to 3.
0 V (10 mV step), Accuracy ±50 mV *2 • Overdischarge release voltage 2.
0 V to 3.
4 V , Accuracy ±100 mV • Overcurrent 1 detection voltage 0.
05 V to 0.
3 V (10 mV step) Accuracy ±15 mV • Overcurrent 2 detection voltage 0.
5 V (fixed) Accuracy ±100 mV (2) High voltage device is used for charger connection pins.
(VM pin and CO pin: Absolute maximum rating=28 V) (3) Delay times (Overcharge: tCU, Overdischarge: tDL, Overcurrent 1: tlOV1, Overcurrent 2: tlOV2) are generated by an internal circuit.
(No external capacitor is necessary.
) Accuracy ±20% (4) The overcharge timer reset delay time (7 ms to 40 ms) is generated by an internal circuit only.
(No external capacitor is necessary.
) (5) Three-step overcurrent detection circuit is included.
(Overcurrent 1, Overcurrent 2, Load short-circuiting) (6) Either charge function or charge inhibition function for 0 V battery can be selected.
(7) Charger detection function and abnormal charge current detection function • The overdischarge hysteresis is released by detecting negative voltage at the VM pin (−0.
7 V typ.
).
(Charger detection function) • When the output voltage of the DO pin is high and the voltage at the VM pin is equal to or lower than the charger detection voltage (−0.
7 V typ.
), the output voltage of the CO pin goes low.
(Abnormal charge current detec...


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