LYT2004E

Power Integrations LYTSwitch-2 Primary-Side Regulation CC/CV Switcher ICs dramatically simplify low power CC LED drivers by eliminating the optocoupler and secondary control circuitry. They introduce a revolutionary control technique to provide accurate output current regulation, compensating for transformer and external component variations, and device parameter tolerances as well as input voltage variations. The device incorporates a high-voltage switching MOSFET, a novel ON/OFF control state machine, a high-voltage switched current source for self-biasing, frequency jitter to reduce EMI, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry into a monolithic IC. This high level of integration enables highly cost-effective designs with very few external components, reducing solution cost and driver size.