AP8371 升压恒压 移动设备 电池驱动器驱动芯片

详情描述：

The AP8371 is a low noise, constant  frequency (1.2MHz) switched capacitor voltage  doubler. It produce a regulated output voltage  from a 1.8V to 5V input with up to 150mA of  output current. Low external parts count (one  flying capacitor and two small bypass  capacitors at VIN and VOUT) make the  AP8371 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  AP8371 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 AP8371 is available in the 6-pin SOT23-6.

Featturres 

 Fixed 3.3V ? 4% Output 
 VIN Range: 1.8V to 5V  
 Output Current: Up to 150mA  
 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 

 2 AA Cell to 3.3V  
 USB On-The-Go Devices  
 White LED Drivers  
 Handheld Devices