I2C, 1A single cell linear battery charger, 18V input, powerpath, ship mode and battery tracking

The

BQ25188 is a linear battery charger IC

focusing on small solution size and low quiescent current for extending battery

life. The device is available in an

8-ball chipscale package which does not need HDI PCB process for fabrication

thereby reducing the PCB cost. The

device can support up to 1A charging and system loads of up to 3A.

The battery is charged using a standard Li-ion or

LiFePO4 charge profile with three phases: precharge, constant current and constant

voltage. Thermal regulation provides the maximum charge current while managing the

device temperature. The charger is also optimized for battery to battery charging

with 3V minimum input voltage operation and can withstand 25V absolute maximum line

transients. The charger

offers a wide operational VIN range for high impedance sources such as solar

cells and wireless power. The device integrates a single push-button input

to reduce the total solution footprint.