LYT4326E3

POWER INTEGRATIONS  LYT4326E3  发光二极管驱动器, 1输出, 降压-升压, 反激, 160VAC-300VAC输入, 132kHz开关, eSIP-6

The is a LYTSwitch-4 high power LED Driver IC with high power factor which easily meet international requirements for THD and harmonics. Output current is tightly regulated with better than ±5% CC tolerance. Efficiency of up to 92% is easily achieved in typical applications. The LYTSwitch-4 family provides excellent turn-ON characteristics for leading-edge and trailing-edge TRIAC dimming applications. This results in drivers with a wide dimming range and fast start-up, even when turning on from a low conduction angle-large dimming ratio and low pop-on current. The LYTSwitch-4 IC is highly integrated and employs a primary-side control technique that eliminates the optoisolator and reduces component count. This allows the use of single-sided printed circuit boards. Combining PFC and CC functions into a single-stage also helps reduce cost and increase efficiency. The 132kHz switching frequency permits the use of small magnetics.

.

Better than ±5% CC regulation

.

TRIAC dimmable to less than 5% output

.

Fast start-up - <250ms at full brightness and <1s at 10% brightness

.

High power factor of >0.9

.

Up to 92% efficient

.

Supports a wide selection of TRIAC dimmers

.

Long lifetime