AP3301 DC-DC 降压恒压驱动IC LED电源驱动芯片 车载电视音响电源驱动

详情描述：

 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 200?A with no load,and drops to < 1?A 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: 200?A
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: < 1?A
 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