DP2539 DIP8 PWM Power Switch IC

DP2539 DIP8 PWM Power Switch IC

DP2539A is a high performance offline PWM power switch for low power AC/DC charger and adapter applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated. High Precision Constant Voltage (CV) and Constant Current (CC) control are integrated as shown in the figure below.DP2539A offers comprehensive protection coverage with auto-recovery features including Cycle-by-Cycle current limiting, VDD Over Voltage Protection (VDD OVP), short circuit protection, built-in leading edge blanking, VDD under voltage lockout.

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• ± 5% Constant Voltage Regulation and Current Regulation at Universal AC Input
  

• Primary Side Regulation (PSR) Without TL431and Opto-coupler
  

• No Need for Control Loop Compensation
  

• Programmable CV and CC Regulation
  

• Multi-Mode PWM/PFM Operation
  

• Output Short Load Protection
  

• Less than 75mW Standby Power
  

• Built-in Line Voltage and Primary Winding Inductance Compensation
  

Applications of DP2539 PWM Power Switch IC

• Low Power AC/DC offline SMPS for
  

• Cell Phone Charger
  

• Digital Camera Charger
  

• Small Power Adapter
  

• Auxiliary Power for PC, TV etc. 
  

• Linear Regulator/RCC Replacement
  

Package Includes

• 1 x DP2539 PWM Power Switch IC