世微AP3301 同步降压恒压IC 高效率 低功耗

featuresup to 95% efficiency current mode operation for excellent line and load transient response 700ma output current low quiescent current: 200μa output voltage: 0.6v ～ 5.5v automatic pwm/pfm mode switching no schottky diode required frequency operation: 1.0mhz for fixed output voltage and 1.4mhz for adjustable output voltage? short-circuit protectionshutdown quiescent current: <1μalow profile tsot/ sot-23-5l package (lead-free packaging is now available)applications digital cameras and mp3 palmtop computers / pdascellular phonesdescriptionthe ap3301 is high efficiency synchronous, pwm step-down dc/dc converters working under an input voltage range from 2.2v to 5.5v. this feature makes the ap3301 suitable for single li-lon battery-powered applications. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 200μa with no load, and drops to <1μa in shutdown. the internal synchronous switch is desired to increase efficiency without an external schottky diode. the 1.0mhz/1.4mhz switching frequency allows the using of tiny, low profile inductors and ceramic capacitors, which minimized overall solution footprint. the ap3301 converters are available in the industry standard tsot/sot-23-5l power packages (or upon request). wireless handsets and dsl modems portable media playerspc cards

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世微AP3301 同步降压恒压IC 高效率 低功耗
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