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USL3631 - 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.

Features

  • S.
  • 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.

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Full PDF Text Transcription

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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.
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