USL3532中文资料NON-ISOLATED BUCK OFFLINE LED DRIVER数据手册UTC规格书

描述 Description

The UTC USL3532 is a high performance, high precision andlow cost constant current LED driver for non-isolated buckapplication. The device operates in critical conduction mode andis suitable for 85V~265V universal input offline LED lighting. Itoperates in critical conduction mode, the output current does notchange with the inductance and LED output voltage.The UTC USL3532 integrates a 500V power MOSFET. It canachieve excellent constant current performance with very fewexternal components, so the system cost and size are minimized.The UTC USL3532 offers rich protection functions to improvethe system reliability, including LED open circuit protection, LEDshort circuit protection, V CC under voltage protection, CS resistorshort circuit protection and thermal regulation function.

特性 Features

Critical conduction mode operation Internal 500V Power MOSFET Ultra low operating current No auxiliary winding ±5% LED output current accuracy LED short protection LED open protection V CC under voltage protection Current sensing resistor short protection Thermal regulation function