Power Management ICs

Battery Protection IC with Power-saving Function for 1-Cell Pack S-82B1B Series

The S-82B1B Series is a protection IC for lithium-ion / lithium polymer rechargeable batteries and 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 S-82B1B Series has an input pin for power-saving signal (PS pin), allowing for reduction of current consumption by using an external signal to start the power-saving function.


High-accuracy voltage detection circuit
Overcharge detection voltage: 3.500 V to 4.600 V (5 mV step) Accuracy ±20 mV
Overcharge release voltage: 3.100 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
Discharge overcurrent detection voltage 1: 0.010 V to 0.100 V (1 mV step) Accuracy ±3 mV
Discharge overcurrent detection voltage 2: 0.030 V to 0.200 V (1 mV step) Accuracy ±5 mV
Load short-circuiting detection voltage: 0.050 V to 0.500 V (5 mV step) Accuracy ±20 mV
Charge overcurrent detection voltage: −0.100 V to −0.010 V (1 mV step) Accuracy ±3 mV
Detection delay times are generated only by an internal circuit (external capacitors are unnecessary).
Power-saving function
PS pin control logic is selectable: Active “H”, active “L”
PS pin internal resistance connection is selectable: Pull-up, pull-down
PS pin internal resistance value is selectable: 1.0 MΩ, 2.0 MΩ, 3.0 MΩ, 4.0 MΩ, 5.0 MΩ
0 V battery charge function is selectable
Available, unavailable
Power-down function
Release condition of discharge overcurrent status is selectable
Load disconnection, charger connection
Release voltage of discharge overcurrent status is selectable
Discharge overcurrent detection voltage 1 (VDIOV1),
Discharge overcurrent release voltage (VRIOV) = VDD × 0.8 (typ.)
High-withstand voltage
VM pin and CO pin: Absolute maximum rating 28 V
Wide operation temperature range
Ta = −40°C to +85°C
Low current consumption
During operation: 2.0 μA typ., 4.0 μA max. (Ta = +25°C)
During power-down: 50 nA max. (Ta = +25°C)
During power-saving: 50 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

  • 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.