POWER INTEGRATIONS LNK420EG Datasheet & Stock

LinkSwitch™-PH single-stage PFC, primary-side constant current control and TRIAC dimming/non-dimming options dramatically simplifies implementation of LED drivers requiring long lifetime, high efficiency, PF >0.9, and TRIAC dimming capability (LNK403-410). 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. Meets high voltage creepage requirement between DRAIN and all other signal pins both on PCB and at package. Typically used in off-line LED driver applications.




Minimum output power of 18W at CBP = 10µF and 31W at CBP = 100µF (85-132VAC, RV = 2Mohm)

Dramatically simplifies off-line LED drivers, EcoSmart™ energy efficient

Accurate and consistent performance, advanced protection and safety features

Auto-restart for short-circuit protection, open circuit fault detection mode

Single-stage combination of power factor correction and accurate constant-current (CC) output

Simple primary-side PWM dimming interface, universal input voltage range

Single-stage PFC combined with output CC control

Greatly increases efficiency, >90% achievable, reduces component count, no current sense resistors

Low standby power remote ON/OFF feature (

Compensates for transformer inductance variations, compensates for line input voltage variation




Warnings
Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.