S-8254A Series

www.sii-ic.com

BATTERY PROTECTION IC

FOR 3-SERIAL- OR 4-SERIAL-CELL PACK

© SII Semiconductor Corporation, 2002-2016

1

The S-8254A Series is a protection IC for 3-serial- or 4-serial-cell lithium-ion / lithium polymer rechargeable

batteries and includes a high-accuracy voltage detector and delay circuit.

The S-8254A Series protects both 3-serial or 4-serial cells using the SEL pin for switching.



Features

(1) High-accuracy voltage detection for each cell

• Overcharge detection voltage n (n = 1 to 4)

3.9 V to 4.4 V (50 mV step)

Accuracy

±25 mV

• Overcharge release voltage n (n = 1 to 4)

3.8 V to 4.4 V

*1

Accuracy

±50 mV

• Overdischarge detection voltage n (n = 1 to 4) 2.0 V to 3.0 V (100 mV step)

Accuracy

±80 mV

• Overdischarge release voltage n (n = 1 to 4)

2.0 V to 3.4 V

*2

Accuracy

±100 mV

(2) Three-level overcurrent protection

• Overcurrent detection voltage 1

0.05 V to 0.30 V (50 mV step)

Accuracy

±25 mV

• Overcurrent detection voltage 2

0.5 V

Accuracy

±100 mV

• Overcurrent detection voltage 3

− 1.2 V

Accuracy

±300 mV

(3) Delay times for overcharge detection, overdischarge detection and overcurrent detection 1 can be set

by external capacitors (delay times for overcurrent detection 2 and 3 are fixed internally).

(4) Switchable between a 3-serial cell and 4-serial cell using the SEL pin

(5) Charge/discharge operation can be controlled via the control pins.

(6) High-withstand voltage

Absolute maximum rating : 26 V

(7) Wide operating voltage range

2 V to 24 V

(8) Wide operating temperature range

−40°C to + 85°C

(9) Low current consumption

• During operation

30

μA max. (+25°C)

• During power-down

0.1

μA max. (+25°C)

(10) Lead-free, Sn100%, halogen-free

*3

*1. Overcharge hysteresis voltage n (n

= 1 to 4) can be selected as 0 V or from a range of 0.1 V to 0.4 V in

50 mV steps.

(Overcharge hysteresis voltage

= Overcharge detection voltage − Overcharge release voltage)

*2. Overdischarge hysteresis voltage n (n

= 1 to 4) can be selected as 0 V or from a range of 0.2 V to 0.7 V

in 100 mV steps.

(Overdischarge hysteresis voltage

= Overdischarge release voltage − Overdischarge detection voltage)

*3. Refer to “ Product Name Structure” for details.



Applications

• Lithium-ion rechargeable battery packs

• Lithium polymer rechargeable battery packs



Package

• 16-Pin TSSOP