絲印：AL680,AL681,AL682,AL683,AL684,AL685,AL686,AL687,AL688,AL689恒流模式PWM升壓IC        
適用于鋰電池（3～4.2V）輸出5V,1A的移動(dòng)電源應(yīng)用，
工作頻率為1MHZ,可以搭配3.3uh小型貼片電感，減少成品體積，內(nèi)置過溫保護(hù)，關(guān)斷保護(hù)，欠壓保護(hù)，過流保護(hù)，并可以外接電阻調(diào)整較大電流值（0.5～2.5A）    
General Description
The SD6271 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25Ω
power MOSFET make this regulator highly power efficient. The internal compensation network also
minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current.
The SD6271 is available in the SOT23-6L package and provides space-saving PCB for the application fields.
? Features:
?-Adjustable Output up to 24V
?-Internal Fixed PWM frequency: 1.0MHz
  -Precision Feedback Reference Voltage: 0.6V (±2%)
?-Internal 0.25Ω, 2A, 26V Power MOSFET
?-Shutdown Current: 0.1μA
?- Over Voltage Protection
?-Over Temperature Protection
?-Adjustable Over Current Protection: 0.5A ~ 2.5A
?-Package: SOT23-6L 
Applications:
? Chargers
? LCD Displays
? Digital Cameras
? Handheld Devices
? Portable Products

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