台湾致新 G5107TBU 2.5V至5.5V升压转换器

　　General Description

　　The G5107 boost converter in corporate high-performance, voltage-mode, fixed-frequency (at 1MHz), pulse width modulation (PWM) circuitry with a built-in 0.3Ω n-channel MOSFET to provide a highly efficient regulator. The low start-up input voltage 1.2V makes

　　G5107 suitable for 2~4 cells alkaline battery applications. High switching frequency allows easy filtering and faster loop performance. An external compensation pin provides the user flexibility in determining loop dynamics, allowing the use of various types of output capacitors. The device can produce an output voltage from 2.5V to 5.5V.

　　Features

　　► 1.2V Low Start-up Input Voltage

　　► Deliver 3.3V 100mA from 2 Alkaline Battery Cell

　　► 90% Efficiency

　　► Adjustable Output from 2.5V to 5.5V

　　► 1.5A, 0.3Ω, 7V Power MOSFET

　　► 1.2V to 5.5V Input Range

　　► Fast 1MHz Switching Frequency

　　Applications

　　► MP3 Players

　　► PDAs

　　► Digital Still Cameras

　　► Portable Applications

　　► Hand-Held Devices