MIC23031 regulator equivalent, 4mhz pwm 400ma buck regulator.
* Input Voltage: 2.7V to 5.5V
* 400 mA Output Current
* Up to 93% Efficiency and 88% at 1 mA
* 21 µA Typical Quiescent Current
* 4 MHz PWM Operation i.
* Mobile Handsets
* Portable Media/MP3 Players
* Portable Navigation Devices (GPS)
* WiFi/WiMax/WiBro Mo.
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