USL3631

UNISONIC TECHNOLOGIES CO., LTD USL3631 Preliminary LINEAR INTEGRATED CIRCUIT NON-ISOLATED BUCK OFFLINE LED DRIVER  DESCRIPTION The UTC USL3631 is a high performance, high precision and low cost constant current LED driver for non-isolated buck application. The device operates in critical conduction mode and is suitable for 85V~265V universal input offline LED lighting. It operates in critical conduction mode, the output current does not change with the inductance and LED output voltage. The UTC USL36313 integrates a 600V power MOSFET. It can achieve excellent constant current performance with very few external components, so the system cost and size are minimized. The UTC USL3631 offers rich protection functions to improve the system reliability, including LED open circuit protection, LED short circuit protection, VCC under voltage protection, CS resistor short circuit protection and thermal regulation function.  FEATURES * Critical conduction mode operation * Internal 600V 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  ORDERING INFORMATION Ordering Number Lead Free Halogen Free USL3631L-S08-R USL3631G-S08-R Package SOP-8 SOP-8 Packing Tape Reel USL3631G-S08-R (1)Packing Type (2)Package Type (3)Green Package (1) R: Tape Reel (2) S08: SOP-8 G: Halogen Free ...