Analog Devices Inc. ADP5360 Battery Management PMIC

The ADP5360 features an internal isolation field-effect transistor (FET) between the linear charger output and the battery node. The full battery protection features are activated when the device is in the battery overcharge and over-discharge fault conditions. The ADP5360 fuel gauge uses a voltage-based algorithm with an adaptive filter limitation solution. The fuel gauge reports a real-time battery state of charge (SOC) for the rechargeable Li-Ion battery with the ultra-low quiescent current.

The ADP5360 buck regulator operates at 1.0MHz switching frequency in forced pulse-width modulation (FPWM) mode. In hysteresis mode, the regulator achieves excellent efficiency at a low output power. The ADP5360 buck-boost regulator only operates in hysteresis mode and outputs a voltage less than or greater than the battery voltage. The ADP5360 supervisory circuits monitor the regulator output voltage and provide a power-on reset signal to the system. A watchdog timer and an external pushbutton can reset the microprocessor.

The I²C-compatible interface enables the programmability of all battery charging parameters, the protection threshold, the buck output voltage, and the status bit readback. The ADP5360 operates over the −40°C to +85°C junction temperature range and is available in a 32-ball, 2.56mm×2.56mm wafer level chip scale package (WLCSP).