The PW2052 is a high efficiency, high frequency synchronous DC-DC step-down regulator. The 100%  
duty cycle feature provides low dropout operation, extending battery life in portable systems. 
The internal synchronous switch increases efficiency and eliminates the need for external Schottky  
diode. At shutdown mode, the input supply current is less than 1µA. The current limit protection and  
on-chip thermal shutdown features provide protection against any combination of overload or  
ambient temperature. 
FEATURES 
 Low RDS(ON) for 
Internal Switch  
(Top/Bottom): 180/100mΩ 
 2.5V~5.5V Input Voltage Range 
 2A Output Current 
 1MHz Switching Frequency Minimizes the 
 External Components 
 Internal Soft-Start Limits the Inrush Current 
 Internal Compensation Function 
 100% Dropout Operation 
 RoHS Compliant and Halogen Free 
 SOT-23-5 Packages 
APPLICATIONS 
 Set Top Box 
 LCD TV 
 Tablet 
 Portable Equipment
PW2025芯片
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