Datasheet4U Logo Datasheet4U.com

UL22 - LED DRIVER CONTROLLER

General Description

Featured Device, UTC UL22, is a PWM controller with innovative Free-DimmingTM technology.

The controller drives one of the two strings of LEDs by an ON/OFF AC wall switch and provides a cost effective solution for light control.

It supports power-factor-correction function in applications.

Key Features

  • S.
  • Free-DimmingTM technology.
  • Proprietary technology using ON/OFF wall switch to select one of the two LED channels.
  • Supports high-side Buck, Buck-Boost and Flyback topologies.
  • High power factor with Discontinue-Current-Mode (DCM) control.
  • Low start-up current and operating current to maximize conversion efficiency.
  • Under-voltage lockout (UVLO) with hysteresis.
  • Provides complete protection functions -Maximum gate driver output clamp 　-VDD pin Over-Voltage Prote.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
UL22Lxxx Miniature Rocker and Lever Switches Apem Components
UL20276 Interface Cables ETC
UL20276-SB Round Cables Yamaichi
UL2464 BORT cable ETC

Other Datasheets by Unisonic Technologies

Part Number Description
UL23EA HIGH ACCURACY LINEAR CONSTANT CURRENT LED DRIVER
UL23EB HIGH ACCURACY LINEAR CONSTANT CURRENT LED DRIVER
UL24D LED DRIVER CONTROLLER
UL24U LED DRIVER CONTROLLER
UL26B LED CONTROLLER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
UNISONIC TECHNOLOGIES CO., LTD UL22 Preliminary LED DRIVER CONTROLLER  DESCRIPTION Featured Device, UTC UL22, is a PWM controller with innovative Free-DimmingTM technology. The controller drives one of the two strings of LEDs by an ON/OFF AC wall switch and provides a cost effective solution for light control. It supports power-factor-correction function in applications. UTC UL22 provides several protection features. It includes a cycle-by-cycle current limit to the power switch; over-current protection at the LED load; bias voltage VDD over-voltage protection. In addition, the driver output (DRV) voltage is clamped for driving the external power MOSFET effectively and safely. The controller also features an internal over-temperature protection.