The G5410 is a low-noise, Quasi PWM/PFM, DC-DC step-down converter. It powers low voltage logic and core in small portable systems such as cellular phones, communicating PDAs, and handy-terminals. The device features an internal MOSFET driver to be high efficiency buck DC/DC converter. Excellent noise characteristics and near fixed frequency operation provide easy post-filtering. The G5410 is ideally suited for Li-Ion battery applications. It is also useful for +3V or +5V fixed input applications. The device automatic operates in two modes for higher efficiency. PWM mode operates at a fixed frequency regardless of the load. PFM Mode extends battery life by switching to a pulse-skipping mode during light loads, it reducing quiescent supply current to under 30A.