ABLIC S-82T1AAA-A8T2U

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.

• 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, 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, 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 (V RIOV)=V DD×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: T a=-40°C to +85°C
• Low current consumption
  • During operation: 2.5 μA typ., 5.0 μA max. (T a=+25°C)
  • During power-down: 50 nA max. (T a=+25°C)
  • During overdischarge: 0.5 μA max. (T a=+25°C)
• Lead-free (Sn 100%), halogen-free

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