S-8235A Series

www.sii-ic.com

FOR AUTOMOTIVE BATTERY PROTECTION IC

FOR 3-SERIAL TO 5-SERIAL CELL PACK (SECONDARY PROTECTION)

© Seiko Instruments Inc., 2013-2015

Seiko Instruments Inc.

1

The S-8235A Series, for automotive use, is utilized for secondary protection of lithium-ion rechargeable batteries, and

incorporates high-accuracy voltage detection circuits and delay circuits. Short-circuiting between cells makes it possible for

serial connection of 3-cell to 5-cell. By connecting in cascade, the S-8235A Series protects 6-serial or more cells lithium-ion

rechargeable battery pack.

The S-8235A Series performs a self-test operation to confirm overcharge detection.

Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the

purpose, contact to SII is indispensable.



Features

• High-accuracy voltage detection circuit for each cell

Overcharge detection voltage n (n = 1 to 5)

3.60 V to 4.50 V (50 mV step)

Accuracy

±20 mV (Ta = +25°C)

Accuracy

±30 mV (Ta = −5°C to +55°C)

Overcharge hysteresis voltage n (n = 1 to 5)

0.0 mV to

−550 mV (50 mV step)

−300 mV to −550 mV

Accuracy

±20%

−100 mV to −250 mV

Accuracy

±50 mV

0.0 mV to

−50 mV

Accuracy

±25 mV

• Self-test operation to confirm overcharge detection is available.

• Cascade connection is available.

• Delay times for overcharge detection can be set by an internal circuit only (External capacitors are unnecessary).

• High-withstand voltage device:

Absolute maximum rating 26 V

• Wide operation voltage range:

6 V to 24 V

• Wide operation temperature range:

Ta =

−40°C to +85°C

• Low current consumption

− 1.0 V for each cell:

10

μA max. (Ta = +25°C)

At 2.3 V for each cell:

8

μA max. (Ta = +25°C)

• Lead-free (Sn 100%), halogen-free

• AEC-Q100 qualified

*1

*1. Contact our sales office for details.



Application

• Lithium-ion rechargeable battery pack (for secondary protection)



Package

• 16-Pin TSSOP