Power Management ICs

Battery Protection IC with Alarm Function for 1-Cell Pack S-82L1A Series

The S-82L1A Series 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.
The alarm function enables the voltage detection immediately before the overcharge detection.


High-accuracy voltage detection circuit
Overcharge detection voltage: 4.200 V to 4.600 V (5 mV step) Accuracy ±12 mV
Overcharge release voltage: 4.000 V to 4.600 V*1 Accuracy ±50 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 ±100 mV
Alarm status detection voltage: 4.200 V to 4.600 V (5 mV step) Accuracy ±12 mV
Discharge overcurrent detection voltage: 0.003 V to 0.100 V (1 mV step) Accuracy ±3 mV
Load short-circuiting detection voltage: 0.010 V to 0.100 V (5 mV step) Accuracy ±7 mV
Charge overcurrent detection voltage: −0.100 V to −0.003 V (1 mV step) Accuracy ±3 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: VRIOV = VDD × 0.8 (typ.)
0 V battery charge
Enabled, inhibited
Power-down function
Available, unavailable
Alarm function
AO pin output logic: Active "L"
AO pin output form: CMOS output, Nch open-drain output
Connection when AO pin = "L": VSS pin, VM pin
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: 800 nA typ., 1500 nA max. (Ta = +25°C)
During power-down: 50 nA max. (Ta = +25°C)
During overdischarge: 500 nA 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.)


  • Lithium-ion rechargeable battery pack
  • Lithium polymer rechargeable battery pack

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.