Features and benefits
• Linear battery charger for charging single cell li-ion battery
– 20 V tolerance on VIN pin
– Programmable input OVP (5.5 V or 6 V)
– Programmable constant current (up to 315 mA) and pre-charge low voltage current
threshold
– Programmable constant voltage regulation
– Programmable automatic recharge voltage and termination current threshold
– Built-in protection features such as input OVP, battery SCP, thermal protection
– JEITA compliant
– Battery attached detection
– Over-temperature protection
• Two step-down DC-DC converters
– Very low quiescent current
– Programmable output voltage
– SW1: core buck converter, 0.5 V to 1.5 V output, 25 mV/step, and a fixed 1.8 V, up to
250 mA
– SW2: system buck converter, 1.5 V to 2.1 V/2.7 V to 3.3 V output, 25 mV/step, up to
500 mA
– Low-power mode for extra power saving
• Two LDOs
– Programmable output voltage regulation
– LDO1: always-on LDO, 1.70 V to 1.90 V output, 25 mV/step, up to 1 mA
– LDO2: system LDO, 1.5 V to 2.1 V/2.7 V to 3.3 V output, 25 mV/step, up to 250 mA
• 1 MHz I2C-bus target interface
• -40 °C to +85 °C ambient temperature range
• Offered in 5 x 5 bump-array WLCSP and 24-pin QFN package

Applications
• Low power microcontroller application