S-82T1A Series

BATTERY PROTECTION IC

WITH ALARM FUNCTION

FOR 1-CELL PACK

© ABLIC Inc., 2022

Rev.1.0_00

www.ablic.com

1

This IC is a protection IC for lithium-ion / lithium polymer rechargeable batteries, which includes high-accuracy voltage

detection circuits and delay circuits. It is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs

from overcharge, overdischarge, and overcurrent.

By using an external overcurrent detection resistor, This IC realizes high-accuracy overcurrent protection with less effect from

temperature change.

The alarm function enables the voltage detection immediately before the overcharge detection.



Features

• High-accuracy voltage detection circuit

Overcharge detection voltage

3.500 V to 4.800 V (5 mV step)

Accuracy

±12 mV

Overcharge release voltage

3.100 V to 4.800 V*1

Accuracy

±50 mV

Alarm detection voltage

3.500 V to 4.800 V (5 mV step)

Accuracy

±12 mV

Alarm hysteresis voltage

0 V, 0.010 V, 0.020 V

Accuracy

±5 mV

Overdischarge detection voltage

2.000 V to 3.000 V (10 mV step)

Accuracy

±50 mV

Overdischarge release voltage

2.000 V to 3.400 V*2

Accuracy

±75 mV

Discharge overcurrent 1 detection voltage

3 mV to 100 mV (0.5 mV step)

Accuracy

±1.5 mV

Discharge overcurrent 2 detection voltage

10 mV to 100 mV (1 mV step)

Accuracy

±3 mV

Load short-circuiting detection voltage

20 mV to 100 mV (1 mV step)

Accuracy

±5 mV

Charge overcurrent detection voltage

−100 mV to −3 mV (0.5 mV step)

Accuracy

±1.5 mV

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

• Discharge overcurrent control function

Release condition of discharge overcurrent status: Load disconnection

Release voltage of discharge overcurrent status:

Discharge overcurrent release voltage (VRIOV) = VDD

× 0.8 (typ.)

• 0 V battery charge:

Enabled, inhibited

• Power-down function:

Available, unavailable

• Alarm function

AO pin output logic:

Active "H", active "L"

AO pin output form:

CMOS output, Nch open-drain output

Connection when AO pin = "L":

VSS pin, VM pin

Charge control function:

Available, unavailable

• High-withstand voltage:

VM pin, CO pin and AO pin: Absolute maximum rating 28 V

• Wide operation temperature range:

Ta =

−40°C to +85°C

• Low current consumption

During operation:

2.5

μA typ., 5.0 μA max. (Ta = +25°C)

During power-down:

50 nA max. (Ta =

+25°C)

During overdischarge:

0.5

μA max. (Ta = +25°C)

• Lead-free (Sn 100%), halogen-free

*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.)



Applications

• Lithium-ion rechargeable battery pack

• Lithium polymer rechargeable battery pack



Package

• HSNT-8(1616)