供应G5177B 同步整流升压芯片 GMT致新科技代理

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           The G5177B is 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 G5177B uses only 70μA (t*) 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 1MHz. It features a current mode control for fast transient response with internal compensation. The G5177B includes cycle-by-cycle current limit to maximum inductor current and over-temperature protection circuit. The G5177B is suitable for iPad-like computers, smart phones and portable handheld devices.
           The G5177B is available in a SOP8 (FD) package. The operating temperature range is from -45°C to 85°C.

特点：

• Up to 90% Efficiency atIout=2A VOUT = 5V from3.3V Input

• Low 70μA Quiescent Current

• Guaranteed 3A Output Current at VOUT = 5V

 from 3.3V Input

• 1MHz PWM Switching Frequency

• Synchronous and Embedded PowerMosfets;NoSchottkyDiode Required

• Internal Soft-Start to Limit Inrush Current

• Adjustable Output
 • Output turn off true shutdown function

• Current Mode Operation with Internal Compensationfor Excellent Line and Load Transient   Response

• Overload/Short-Circuit Protection with hiccup control

• Shutdown Current <1μA

• TheralShutdown

• Compact 8 pin,SOP8 (FD) package

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