The S-82N1A 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 S-82N1A Series has an input pin for charge-discharge control signal, allowing for charge-discharge control with an external signal.

Features

• High-accuracy voltage detection circuit

Overcharge detection voltage 3.500 V to 4.600 V (5 mV step) Accuracy ±15 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 0.003 V to 0.100 V (1 mV step) Accuracy ±3 mV

Load short-circuiting detection voltage 0.010 V to 0.200 V (1 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).

• Charge-discharge control function

CTL pin control logic: Active H, active L

CTL pin internal resistance connection: Pull-up, pull-down

CTL pin internal resistance value: 1.0 MΩ, 2.0 MΩ, 3.0 MΩ, 4.0 MΩ, 5.0 MΩ

• Discharge overcurrent control function

Release condition of discharge overcurrent status: Load disconnection, charger connection

Release voltage of discharge overcurrent status: Discharge overcurrent detection voltage (VDIOV),

Discharge overcurrent release voltage (VRIOV) = VDD × 0.8 (typ.)

• 0 V battery charge: Enabled, inhibited

• Power-down function: Available, unavailable

• High-withstand voltage: VM pin, CO pin: Absolute maximum rating 28 V

• Wide operation temperature range: Ta = −40°C to +85°C

• Low current consumption

During operation: 600 nA typ., 990 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

Applications

• Lithium-ion rechargeable battery pack

• Lithium polymer rechargeable battery pack