LYT4228 Datasheet | Power Integrations

LYT4221-4228/4321-4328 LYTSwitch™-4 High Power LED Driver IC Family Single-Stage Accurate Primary-Side Constant Current (CC) Controller with PFC for High-Line Applications with TRIAC Dimming and Non-Dimming Options Product Highlights - Better than ±5% CC regulation - TRIAC dimmable to less than 5% output - Fast start-up - <250 ms at full brightness - <1s at 10% brightness - High power factor >0.9 - Easily meets EN61000-3-2 - Less than 10% THD in optimized designs - Up to 92% efficient - 132 k Hz switching frequency for small magnetics High Performance, bined Driver, Controller, Switch The LYTSwitch-4 family enables off-line LED drivers with high power factor which easily meet international requirements for THD and harmonics. Output current is tightly regulated with better than ±5% CC tolerance1. Efficiency of up to 92% is easily achieved in typical applications. Supports a Wide Selection of TRIAC Dimmers The LYTSwitch-4 family provides excellent...