RN5T614 is the power management IC for GPS-PND/MID and Smart-Phone.
It integrates three high-efficiency step-down DCDC controllers, eight low dropout regulators, power control logic, Li-ion Battery Charger, I2C-Bus Interface, voltage detections, thermal shut-down, UVLO and etc.
High Efficiency Step-down DC/DC Converters
Low Drop Voltage Regulators
Li-ion Battery Charger