ABLIC S-82M1A, S-82N1A, S-82N1B Battery Protection ICs

ABLIC S-82M1A, S-82N1A, and S-82N1B Battery Protection ICs provide extended battery life and higher safety and feature an ultra-low 990nA (maximum) current consumption during operation. These devices are designed for 1-cell lithium-ion and lithium-polymer rechargeable batteries and feature accuracy of overcharge detection voltage as high as ±15mV.

The ABLIC S-82M1A Battery Protection IC uses an external current detection resistor to reduce the impact of temperature changes to deliver high-accuracy overcurrent protection.

The S-82N1A features an external input to the CTL (charge-discharge control signal input) pin, which activates the charge-discharge control function and disables battery charge and discharge. The IC delivers thermal protection by disabling charging and discharging the battery pack at high temperatures by connecting a PTC thermistor to the CTL pin.

The S-82N1B features an external input to the PS (power-saving signal input) pin that will activate the power-saving function and disable battery discharge. Simultaneously, the protection IC itself suppresses current consumption to 50nA max. When the product is in storage and unused, this function extends the time until the battery voltage drops to zero protecting the product from deep discharge and contributing to better safety.

All three devices are offered in a compact SNT-6A package, ideal for space-constrained applications.

Features

Accuracy of overcharge detection voltage as high as ±15mV
Ultra-low current consumption of 990nA (maximum)
High-accuracy overcurrent protection through the use of an external current-sensing resistor (S-82M1A)

Charge-discharge control thanks to the external signal input pin (S-82N1A)
Power-saving function lowers the current consumption down to 50nA, minimizing battery consumption to zero (S-82N1B)

Applications

Wireless earphones
Smartwatches
Hearing aids

Activity trackers
Headsets
Smart glasses

Specifications

High-accuracy voltage detection circuit
- 3.5V to 4.6V (5mV step) overcharge detection voltage (Accuracy ±15mV)
- 3.1V to 4.6V overcharge release voltage (Accuracy ±50mV)
- 2.0V to 3.0V (10mV step) over-discharge detection voltage (Accuracy ±50mV)
- 2.0V to 3.4V over-discharge release voltage (Accuracy ±100mV)
- 0.003V to 0.10V (1mV step) discharge overcurrent detection voltage (Accuracy ±3mV)
- 0.010V to 0.20V (1mV step) load short-circuiting detection voltage (Accuracy ±7mV)
- -0.10V to -0.003V (1mV step) charge overcurrent detection voltage (Accuracy ±3mV)

Detection delay times are generated only by an internal circuit (No external capacitors required)
0V battery charge: Enabled, inhibited
Power-down function: Available, unavailable
High-withstand voltage
- VM pin and CO pin
- Absolute maximum rating 28V
Low current consumption
- 600nA typical, 990nA maximum during operation
- 50nA maximum during power-down
- 500nA maximum during over-discharge
- 50nA maximum during power-saving (S-82N1B)
-40°C to +85°C operating temperature range
1.57mm x 1.8mm x 0.5mm SNT-6A package
Halogen-free, lead-free