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UBA3077HN - Three-channel switched-mode LED driver

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General Description

The UBA3077HN is a high efficiency LED driver in an HVQFN40 package for general LED lighting or backlighting LCD displays.

Operating from a supply of 10 V to 42 V, it can drive up to 3 strings of 20 LEDs each.

The low voltage circuitry is powered by an external 5 V voltage supply.

Overview

UBA3077HN Three-channel switched-mode LED driver Rev.

1 — 8 February 2011 Objective data sheet 1.

Key Features

  • Three-channel LED backlight driver.
  • ±2 % absolute LED current accuracy and channel-to-channel matching.
  • External power supply voltage from 10 V to 42 V and 5 V for low voltage circuitry.
  • Constant 500 kHz frequency peak current mode control.
  • Low value output capacitor (2 μF).
  • Up to 150 mA per channel.
  • Peak LED current programmable with external resistor.
  • Three boost converters from VIN up to 75 V output voltage.
  • Hig.

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