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 2-serial-cell lithium-ion / lithium polymer rechargeable battery
packs from overcharge, overdischarge, and overcurrent.
Use of an external overcurrent detection resistor enables this IC to provide high-accuracy overcurrent protection with less
impact from temperature changes.
The S-82B2A Series has an input pin for charge-discharge control signal (CTL pin), allowing for charge-discharge control
with an external signal. The S-82B2B 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.

Features
• High-accuracy voltage detection circuit
Overcharge detection voltage n 3.500 V to 4.800 V (5 mV step) Accuracy ±20 mV
Overcharge release voltage n 3.100 V to 4.800 V*1 Accuracy ±50 mV
Overdischarge detection voltage n 2.000 V to 3.000 V (10 mV step) Accuracy ±50 mV
Overdischarge release voltage n 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 ±3.0 mV
Discharge overcurrent 2 detection voltage 10 mV to 100 mV (1 mV step) Accuracy ±5 mV
Load short-circuiting detection voltage 20 mV to 100 mV (1 mV step) Accuracy ±10 mV
Charge overcurrent detection voltage −100 mV to −3 mV (0.5 mV step) Accuracy ±3.0 mV
• Detection delay times are generated only by an internal circuit (external capacitors are unnecessary).
• Charge-discharge control function (S-82B2A Series)
CTL pin control logic: Active "H", active "L"
CTL pin internal resistance connection: Pull-up, pull-down
CTL pin internal resistance value: 1 MΩ to 10 MΩ (1 MΩ step)
• Power-saving function (S-82B2B Series)
PS pin control logic: Active "H", active "L"
PS pin internal resistance value: 1 MΩ to 10 MΩ (1 MΩ step)
• 0 V battery charge: Enabled, inhibited
• Power-down function: S-82B2A Series: Available, unavailable
S-82B2B Series: Available
• 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: 3.0 μA typ., 6.0 μA max. (Ta = +25°C)
During power-down: 50 nA max. (Ta = +25°C)
During overdischarge: 1.0 μA max. (Ta = +25°C)
During power-saving (S-82B2B Series): 50 nA max. (Ta = +25°C)
• Lead-free (Sn 100%), halogen-free

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