G5723 - Global Mixed-mode Technology

G5723 Synchronous Buck Converter

The G5723 consists of a synchronous step-down DC/DC converter and a low-noise LDO regulator. The DC/DC converter is operated on current mode architecture. Switching frequency is set at 1.2MHz allowing the use of small surface mount inductor and capacitor. The internal synchronous switches increase efficiency and eliminate the need for external Schottky diode.

Features

Buck Converter „ High Efficiency: Up to 95% „ Low Quiescent Current: Only 50µA During Op- eration „ Internal Soft Start Function „ 600mA Output Current „ 2.5V to 6V Input Voltage Range „ 1.2MHz Switching Frequency „ No Schottky Diode Required „ 100% Duty Cycle in Dropout Operation „ 0.6V Reference Allows Low Output Voltages „ <1µA Shutdown Current „ Current Mode Operation for Excellent Line and Load Transient Response LDO Regulator „ Ultra Low Output Noise 30µV (rms) „ Ultra Low 55µA No-Load Supply Current „ Ultra Low Dropout 70mV @ 50mA Load „ Guarantee 300mA Output Current „ Fixed Mode: 3V „.