ABLIC IC enables replacement of multiple NiH batteries with one lithium battery

ABLIC’s S-19161A/B claims to enable automotive manufacturers to significantly miniaturise backup power systems by allowing the replacement of multiple NiH batteries with a single lithium battery in emergency backup power systems.

The IC operates across a temperature range of -40°C to 125°C, exceeding conventional 85°C limits. It features industry-leading overcharge detection accuracy of ±15mV with three-level discharge overcurrent protection.

Designed for emergency call (e-Call) systems and Telematics Control Units (TCUs), the S-19161A/B meets Production Part Approval Process (PPAP) requirements and is undergoing AEC-Q100 Grade 1 certification.

ABLIC IC enables replacement of multiple NiH batteries with one lithium battery

Example of protection circuits using the S-19161A/B

Key Features

1. Achieves operation in high temperatures up to 125℃
Operating across a temperature range of -40℃ to 125℃, this IC significantly exceeds the conventional 85℃ limit of most protection ICs. This enables enhanced protection for 1-cell automotive batteries and improves safety in high-temperature applications.

2. High degree of safety through 3 levels of discharge overcurrent protection
The product is equipped with 3 levels of discharge overcurrent protection; 1) discharge overcurrent 1, 2) discharge overcurrent 2, and 3) load short-circuiting; making it possible to isolate abnormal current in safer areas. This achieves industry top-class detection voltage accuracy and improves application device safety.

3. Industry top-class overcharge detection voltage accuracy of ±15mV
The IC achieves industry-leading overcharge detection accuracy of ±15mV, optimizing battery performance while maintaining robust safety protection.

Major Specifications

・Overcharge Detection Voltage: 3.50 to 4.80V ±15mVAblic
・Overdischarge detection voltage: 2.00 to 3.00V ±50mV
・Discharge overcurrent 1 detection voltage: 0.003 to 0.100mV ±1.5mV (S-19161A Series), 0.003 to 0.100V ±1.0mV (S-19161B series)
・Discharge overcurrent 2 detection voltage: 0.006 to 0.100V ±3.0mV (S-19161A Series), 0.006 to 0.100V ±2.0mV (S-19161B Series)
・Short-circuit detection voltage: 0.020 to 0.100V ±5.0mV (S-19161A Series), 0.020 to 0.100V ±4.0mV (S-19161B Series)
・Charge overcurrent detection voltage: -0.100 to -0.003V ±1.5mV (S-19161A Series), -0.100 to -0.003V ±1.0mV (S-19161B Series)
・Charging of 0V batteries (allowed, prohibited)
・Current consumption during operation: 4.0µA max.
・Current consumption during power-down: 50nA max.
・Max rating: 28V
・Operating temperature: -40 to +125℃
・Packages: SOT-23-6: 2.9×2.8×t1.35mm max.