LNK457DG Datasheet PDF - Power Integrations, Inc

Description
   The LinkSwitch-PL family enables a very small and low cost single-stage power factor corrected constant current driver for solid state lighting. Optimized for direct LED current sensing, the LinkSwitch-PL operates over a wide input voltage range delivering an output power of up to 16 W. The LinkSwitch-PL control algorithm provides flicker-free TRIAC dimming with minimal external components.

Product Highlights
Dramatically Simplifies Off-line LED Drivers
•  Flicker-free phase-controlled TRIAC dimming
•  Single stage power factor correction and accurate constant current (CC) output
•  Very low component count with small non-electrolytic bulk capacitor for compact replacement lamp designs
•  Compact SO8, eSOP, and eDIP packages
•  Completely eliminates control loop compensation
Advanced Performance Features
•  Optimized for non-isolated flyback designs
•  Frequency jitter greatly reduces EMI filter size and costs
•  Low dissipation direct sensing of LED current
Advanced Protection and Safety Features
•  Cycle skipping regulation for abnormally low output power to clamp peak output current delivered
•  725 V integrated power MOSFET allows small bulk capacitance and maximizes power capability
•  Short-circuit, overload, open feedback and output overvoltage protection
•  Hysteretic thermal shutdown
•  Meets high-voltage creepage between DRAIN and all other pins both on PCB and at package
EcoSmart™ - Energy Efficient
•  High power factor optimizes system lumen per input VA
•  Control algorithm balances switching and conduction losses over line and load to maintain optimum efficiency