USL3631数据手册UTC中文资料规格书

描述 Description

The UTC USL3631 is a high performance, high precision andlow cost constant current LED driver for non-isolated buckapplication. The device operates in continuous conduction modeand is suitable for 85V~265V universal input offline LED lighting.It operates in continuous conduction mode, the output currentdoes not change with the inductance and LED output voltage.The UTC USL3631 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 USL3631 offers rich protection functions to improvethe system reliability, including LED open circuit protection, LEDshort circuit protection, VCC under voltage protection, CS resistorshort circuit protection and thermal regulation function.

特性 Features

• Continuous 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
• VCC under voltage protection
• Current sensing resistor short protection
• Thermal regulation function