LNK420EG IC - Power Integrations - LED Driver Off Line Switcher IC

LinkSwitch-XT incorporates a 700 V power MOSFET, oscillator, simple ON/OFF control scheme, a high voltage switched current source, frequency jittering, cycle-by-cycle current limit and ® Table 1. Notes: 1. Minimum continuous power in a typical non- ventilated enclosed adapter measured at 50 °C ambient. 2. Minimum practical continuous power in an open frame design with adequate heat sinking, measured at 50 °C ambient. 3. Packages: P: DIP-8B, G: SMD-8B. Please see Part Ordering Information. 4. See Key Application Considerations section for complete description of assumptions. thermal shutdown circuitry onto a monolithic IC. The start-up and operating power are derived directly from the DRAIN pin, eliminating the need for a bias winding and associated circuitry. LinkSwitch-XT incorporates a 700 V power MOSFET, oscillator, simple ON/OFF control scheme, a high voltage switched current source, frequency jittering, cycle-by-cycle current limit and The LNK420EG 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 LNK420EG device provides accurate constant current control while eliminating the need for an optocoupler and current sensing circuits.LinkSwitch-PH incorporates a 725 V 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. Features:- • Single-stage combination of power factor correction and accurate constant-current (CC) output • Enables very long lifetime designs (no electrolytic capacitors) • Eliminates optocoupler and all secondary current control circuitry • Eliminates control loop compensation circuitry • Simple primary-side PWM dimming interface • Universal input voltage range Specification:- Symbol Parameter Min Type Max Units ICD2 Drain Supply Current 0.5 0.85 1.2 m A VV Voltage Monitor Pin Voltage 2.75 3 3.25 V VV(REM) Remote ON/OFF Threshold 0.5 V DCMAX Maximum Duty Cycle 90 99.9 % Related Document:- LNK420EG IC Data Sheet