The LNK419EG is a LinkSwitch?-PH dramatically simplifies implementation LED Driver requiring long lifetime and high efficiency. The single-stage combined power factor and constant-current controller eliminates a switching stage and the electrolytic bulk capacitor. The advanced primary-side control used by the LinkSwitch?-PH device provides accurate constant current control while eliminating the need for an optocoupler and current sensing circuits. LinkSwitch?-PH incorporates a 725V power FET, a continuous mode PWM controller, a high-voltage switched current source for self biasing, frequency jittering, protection circuitry including cycle-by-cycle current limit and hysteretic thermal shutdown.
Single-stage combination of power factor correction and accurate constant-current (CC) output
Simple primary-side PWM dimming interface
Universal input voltage range
EcoSmart? - Energy efficient
Greatly increases efficiency, >90% achievable
Reduces component count
No current sense resistors
Low standby power remote ON/OFF (<50mW at 230VAC)
Accurate and consistent performance
Compensates for transformer inductance variations
Compensates for line input voltage variation
Frequency jittering greatly reduces EMI filter size
Auto-restart for short-circuit protection
Open circuit fault detection mode
Automatic thermal shutdown restart with hysteresis
