PL3731

Key Features ? Built-in Integrated Power BJT ? Accurate Constant Current Regulation at Universal AC input ? Eliminates Opto-coupler and all Secondary CC/CV Control Circuitry ? Built-in Line Compensation for Tighter CC/CV Regulation ? Built-in Compensation for Transformer Inductance Tolerances ? Adjustable Output Cable Compensation ? Adaptive Multi-mode PFM Control for Improving Efficiency ? Low Start-up Current ? Built-in Leading Edge Blanking (LEB) ? Cycle-by-Cycle Current Limiting ? VDD Under Voltage Lockout and VDD over voltage protection ? Built-in Short Circuit Protection and Output Overvoltage Protection ? Over temperature protection Applications AC/DC power supply applications ? Cell Phone Charger ? Small Power Adaptor/Charger ? LED Driver ? Standby Supply for Consumer Electronic