Automotive ICs

For Automotive Battery Protection IC For 3-Serial To 5-Serial Cell Pack (Secondary Protection) S-8235A Series

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 for these purposes, it is imperative to contact our sales representatives.


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
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
At VCUn − 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


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

Parts List

  • U(Ux), S and G at the end of the product name of ABLIC Inc. were used to indicate different material specifications as “environmental code”,
    however, these have now been unified into “lead-free and halogen-free” and are identical in terms of environmental quality.
  • Note: Lead-free plating other than 100% Sn is applied to some limited old products, therefore, please contact our sales representatives for details.
  • These descriptions may be different from the actual product name and parameter.
    Please confirm the product name and specifications with the data sheet again.
  • The information herein is subject to change without notice.