G5177C规格书.pdf

G5177C Global Mixed-mode Technology Sync. Rectifier Step Up Converter Features General Description Up to 90% Efficiency at Iout=2A VOUT = 5V from The G5177C is a compact, high-efficiency, synchro- 3.3V Input nous step-up converter with power Mosfets embedded Low 70μA Quiescent Current and with output turn off true shutdown function and Guaranteed 3A Output Current at VOUT = 5V adjustable output current limiting with foldback for a from 3.3V Input single-cell Li-ion/polymer battery. The G5177C uses 500KHz PWM Switching Frequency only 70μA (typ) quiescent current and allows the con- Synchronous and Embedded Power Mosfets; verter to switch only when needed at no load and light No Schottky Diode Required loads, and when load is higher than 100mA, it uses Internal Soft-Start to Limit Inrush Current fixed-frequency PWM technique at 500KHz. It features Adjustable Output a current mode control for fast transient response with Output turn off true shutdown function internal compensation. The