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L5109 - WHITE LED STEP-UP CONVERTER

General Description

The UTC L5109 is an inductor-based DC/DC converter designed to drive up to six white LEDs in series or 2 rows of LEDs with 5 for each in parallel for backlight.

Only one feedback resistor is needed to control the LED current and obtain required brightness.

Key Features

  • S.
  • Inherently Uniform LED Current.
  • High Efficiency up to 83.5%.
  • No Need for External Schottky Diode.
  • Over Output Voltage Protection.
  • OVP.
  • 1.2MHz Switching Frequency.

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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.

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UNISONIC TECHNOLOGIES CO., LTD L5109 Advance WHITE LED STEP-UP CONVERTER CMOS IC  DESCRIPTION The UTC L5109 is an inductor-based DC/DC converter designed to drive up to six white LEDs in series or 2 rows of LEDs with 5 for each in parallel for backlight. Only one feedback resistor is needed to control the LED current and obtain required brightness.  FEATURES * Inherently Uniform LED Current * High Efficiency up to 83.5% * No Need for External Schottky Diode * Over Output Voltage Protection * OVP * 1.2MHz Switching Frequency  ORDERING INFORMATION Ordering Number L5109G-AG6-R Package SOT-26 54 6 1 23 SOT-26 Packing Tape Reel  MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 4 QW-R125-038.