PL3717A

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