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Portable media playersDescrriipttiionThe AP3301-AESA is high efficiencysynchronous, PWM step-down DC/DCconverters working under an input voltage rangeof 2.5V to 5.5V. This feature makes theAP3301-AESA suitable for single Li-lonbattery-powered applications. 100% duty cyclecapability 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 toincrease efficiency without an external Schottkydiode. The 1.4 MHz fixed switching frequencyallows the using of tiny, low profile inductors andceramic capacitors, which minimized overallsolution footprint.The AP3301-AESA converters are available inthe industry standard SOT-23-5 power packages(or upon request).
Featturress
Up to 95% Efficiency
Current Mode Operation for Excellent Lineand Load Transient Response
Low Quiescent Current: 200μA
Up to 700mA Load Current
Soft-start
Low Switch on Resistance RDS(ON), InternalSwitch: 0.35?
Output Voltage：5.5V～0.6V
Automatic PWM/PFM Mode Switching
No Schottky Diode Required
1.4MHz Fixed Frequency Switching
Short-Circuit Protection
Shutdown Quiescent Current: < 1μA
Low Profile SOT-23-5 Package (lead-freepackaging is now available)Applliicattiion
Digital cameras and MP3
Palmtop computers / PDAs
Cellular phones
Wireless handsets and DSL modems
PC cards
