G2118F11U

G2118 Global Mixed-mode Technology Sync. Rectifier Step Up Converter Features General Description „ The G2118is a compact, high-efficiency, synchronous step-up converter with power Mosfets embedded and with output turn off true shutdown function and adjustable output current limiting with foldback for a single-cell Li-ion/polymer battery. The G2118 uses only 100μA (typ) quiescent current and allows the converter to switch only when needed at no load and light loads, and when load is higher than 100mA, it uses fixed-frequency PWM technique at 500KHz. It features a current mode control for fast transient response with internal compensation. The G2118 includes cycle-by-cycle current limit to maximum inductor current and over-temperature protection circuit. The G2118 is suitable for iPad-like computers, smart phones and portable handheld devices. „ „ „ „ „ „ „ „ „ „ „ „ Up to 92% Efficiency at VOUT = 5V from 3.3V Input Low Quiescent Current 100µA Guaranteed 3A Output Current at VOUT = 5V from 3.3V Input 520KHz PWM Switching Frequency Synchronous and Embedded Power Mosfets; No Schottky Diode Required Internal Soft-Start to Limit Inrush Current Adjustable Output Output turn off true shutdown function Current Mode Operation with Internal Compensation for Excellent Line and Load Transient Response Overload/Short-Circuit Protection with hiccup control Shutdown Current