S-8211C Series

www.sii-ic.com

BATTERY PROTECTION IC

FOR 1-CELL PACK

© Seiko Instruments Inc., 2004-2015

Seiko Instruments Inc.

1

The S-8211C Series is a protection IC for 1-cell lithium-ion / lithium polymer rechargeable battery and includes high-

accuracy voltage detection circuits and delay circuits.

The S-8211C Series is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs from

overcharge, overdischarge, and overcurrent.



Features

• High-accuracy voltage detection circuit

Overcharge detection voltage

3.9 V to 4.5 V (5 mV step)

Accuracy

±25 mV (Ta = +25°C)

Accuracy

±30 mV (Ta = −5°C to +55°C)

Overcharge release voltage

3.8 V to 4.43 V

P

*1

P

Accuracy

±50 mV

Overdischarge detection voltage

2.0 V to 3.0 V (10 mV step)

Accuracy

±50 mV

Overdischarge release voltage

2.0 V to 3.4 V

P

*2

P

Accuracy

±100 mV

Discharge overcurrent detection voltage

0.05 V to 0.30 V (10 mV step)

Accuracy

±15 mV

Load short-circuiting detection voltage

0.5 V (fixed)

Accuracy

±200 mV

Charge overcurrent detection voltage

−0.1 V (fixed)

Accuracy

±30 mV

• Detection delay times are generated only by an internal circuit (external capacitors are unnecessary).

Accuracy

±20%

• High-withstand voltage device is used for charger connection pins

(VM pin and CO pin: Absolute maximum rating = 28 V)

• 0 V battery charge function "available" / "unavailable" is selectable.

• Power-down function "available" / "unavailable" is selectable.

• Wide operation temperature range

Ta =

−40°C to +85°C

• Low current consumption

During operation

3.0

During power-down

0.2

• Lead-free, Sn 100%, halogen-free

P

*3

*1. Overcharge release voltage = Overcharge detection voltage

− Overcharge hysteresis voltage

(Overcharge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.4 V in 50 mV step.)

*2. Overdischarge release voltage = Overdischarge detection voltage

+ Overdischarge hysteresis voltage

(Overdischarge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV step.)

*3. Refer to " Product Name Structure" for details.



Applications

• Lithium-ion rechargeable battery pack

• Lithium polymer rechargeable battery pack



Packages

• SOT-23-5

• SNT-6A