The ADP5320 PMU fuel gauge includes a precision 16-bit coulomb counter that integrates battery current flowing through the device. A 12-bit ADC is included to monitor battery voltage, output supply voltages, and junction temperature. The ADP5320 PMU buck-boost regulators are high efficiency, step up and step down regulators. This PMU operates from -10°C to 70°C temperature range. Typical applications include wearable medical applications, IoT applications, disposable sensor devices, and battery-powered devices.