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L4075 - 40V LED DRIVER

General Description

The UTC L4075 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the total LEDs chain voltage.

Key Features

  • S.
  • 6V~40V input voltage range.
  • Simple low parts count.
  • Internal 40V power switch.
  • High efficiency up to 95%.
  • Typical 5% output current accuracy.
  • Single pin on/off and brightness control using DC voltage or PWM.
  • Up to 1MHz switching frequency.
  • Protection features: Open-circuit LED Protection Thermal shutdown Protection.

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Full PDF Text Transcription for L4075 (Reference)

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UNISONIC TECHNOLOGIES CO., LTD L4075 Preliminary 40V LED DRIVER WITH INTERNAL SWITCH  DESCRIPTION The UTC L4075 is a continuous conduction mode inductive step-down conve...

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he UTC L4075 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the total LEDs chain voltage. The chip operates from an input supply between 6V and 40V and provides an externally adjustable output current of up to 400mA. Depending upon supply voltage and external components, this can provide up to 30W of output power. The UTC L4075 includes an integrated output switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.

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