Li-ion battery charger protects battery for eCall

The ISL78692 4.1 V single-cell battery charger helps extend the life of Li-ion batteries in automotive emergency call (eCall) systems. The battery charger dissipates lower leakage current (3 uA) than competing solutions. It is designed to support emerging worldwide emergency call systems such as Europe’s eCall initiative.

The battery charger monitors the battery’s temperature and with its 4.1-V output helps extend the life of LiFeP04 batteries. The 3 x 3-mm DFN package charger requires five external components to program the charging current. It offers a charge current thermal foldback feature that prevents overheating by automatically reducing the battery charging current. The device has an operating temperature from -40°C to 85°C and a guaranteed operation down to 2.65 V after start-up, preventing shut off during cold-crank start.