首鼎 HXN-XIAA 单节锂电池充电管理IC 
 

   Description ： 
 

  
 
 

  The HXN-XIAA is a complete battery charger controller for one (4.2V)-XIAA provides a small,
 

  sense resistor sets the charge current with high 
 


 

  reference set the final float voltage to 4.22V per 
 

  cell with 1% accuracy. 
 
When the input supply is removed, the HXN-XIAA automatically enters a low current sleep mode,
 

  dropping the battery drain current to 4μ
 

  charge cycle ends, if the battery voltage drops 
 

  below 4.05V per cell, a new charge cycle will 
 

  automatically begin. 
 
The HXN-XIAA is available in the 8-lead SO Package.  Features：
 

  
 
 

  Input Supply Range: 4.7V-6V 
 

  
 
 

  High Efficiency Current Mode PWM Controller 
 

  
 
 

  End - Charge - Current Detection Output 
 

  
 
 

  Constant Switching Frequency for Minimum 
 

  Noise 
 

  
 
 

  ± 
 

  1% Charge Voltage Accuracy 
 

  
 
 

  Automatic Battery Recharge 
 

  
 
 

  Automatic Shutdown When Input Supply is 
 

  Removed 
 

  
 
 

  Automatic Trickle Charging of Low Voltage 
 

  Batteries 
 

  
 
 

  Battery Temperature Sensing 
 

  
 
 

  Stable with Ceramic Output Capacitor 
 

  
 
 

  8-Lead SO PackageApplication 
 

  
 
 

  Charging Docks 
 

  
 
 

  Handheld Instruments 
 

  
 
 

  Portable Computers