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UL83B - NON ISOLATED BUCK CONSTANT CURRENT HIGH PF LED DRIVER

Datasheet Summary

Description

UL83B are a highly integrated power switch with constant current (CC) control for LED lighting applications.

which is suitable for the non isolated buck LED constant current power supply with 85Vac~265Vac full range input voltage, active PFC control for high PF, low THD, and high efficiency.

Features

  • S.
  • Active PFC for High PF and Low THD.
  • PF>0.9 with Universal Input.
  • The integrated 550V power mos.
  • The integrated high voltage power supply function.
  • The inductor current critical continuous mode.
  • Without auxiliary winding detection and power supply.
  • The wide voltage input voltage.
  • ±5% LED output current accuracy.
  • The LED short circuit and open circuit protection.
  • The chip power supply under voltage protection.
  • The regulating functio.

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Datasheet preview – UL83B

Datasheet Details

Part number UL83B
Manufacturer UTC
File Size 314.58 KB
Description NON ISOLATED BUCK CONSTANT CURRENT HIGH PF LED DRIVER
Datasheet download datasheet UL83B Datasheet
Additional preview pages of the UL83B datasheet.

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Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD UL83B Advance NON ISOLATED BUCK CONSTANT CURRENT HIGH PF LED DRIVER IC CMOS IC  DESCRIPTION UL83B are a highly integrated power switch with constant current (CC) control for LED lighting applications. which is suitable for the non isolated buck LED constant current power supply with 85Vac~265Vac full range input voltage, active PFC control for high PF, low THD, and high efficiency. UL83B integrates 550V power MOSFET with high voltage startup and IC power supply circuit, which requires very few external components. The IC senses the inductor current during the whole switching cycle, which can achieve high precision CC control with excellent line and load regulation.
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