AP8370 恒升小型电池供电 升压5V固定

详情描述：

The AP8370 is a low noise, constant frequency  (1.2MHz) switched capacitor voltage doubler. It  produce a regulated output voltage from a 2.7V  to 4.5V input with up to 250mA of output current.  Low external parts count (one flying capacitor  and two small bypass capacitors at VIN and  VOUT) make the AP8370 ideally suited for  small, battery-powered applications.  A new charge-pump architecture maintains  constant switching frequency to zero load and  reduces both output and input ripple. The  AP8370 have thermal shutdown capability and  can survive a continuous short circuit from  VOUT to GND. Built-in soft-start circuitry  prevents excessive inrush current during  start-up.  High switching frequency enables the use of  small ceramic capacitors. A low current  shutdown feature disconnects the load from VIN  and reduces quiescent current to <1uA. The AP8370 is available in the 6-pin SOT23-6.

Featturres 
 Fixed 5V ? 4% Output 
 VIN Range: 2.7V to 5V  
 Output Current: Up to 250mA  
 Constant Frequency Operation at All Loads  
 Low Noise Constant Frequency (1.2MHz)  Operation  
 Automatic Soft-Start Reduces Inrush  Current  
 Shutdown Current <1?A  
 Short-Circuit Protection  
 No Inductors 
 Available in Low Profile 6-Lead SOT23  Package   Applliicattiion 
 White LED Backlighting  
 Li-Ion Battery Backup Supplies  
 Local 3V to 5V Conversion  
 Smart Card Readers  
 PCMCIA Local 5V Supplies