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ASL3417SHN - Enhanced three channel LED buck driver

General Description

The ASL3417SHN has a hysteretic buck DC-to-DC topology.

With input voltages from 10 V to 80 V, it allows maximum flexibility on output voltages for each channel, enabling applications with up to 20 LEDs.

Key Features

  • The ASL3417SHN is an automotive grade product that is AEC-Q100 grade 1 qualified.
  • Operating ambient temperature range of 40 C to +125 C.
  • Wide operating input voltage range from +10 V to +80 V.
  • Able to drive up to 20 LEDs, wide operating LED voltage range regulated from 2.5 V to 70 V.
  • Output current of up to and above 1.5 A with high LED current accuracy of 5 % over the complete operating temperature range.
  • Output current programmable via SPI interface.
  • Re.

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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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ASL3417SHN Enhanced three channel LED buck driver with limp-home Rev. 4 — 16 September 2019 Product data sheet 1. Introduction The ASL3417SHN is a three channel buck mode LED driver IC with a Limp-home mode. It delivers constant average DC current to LEDs independent of the input voltage. The ASL3417SHN supports up to three output channels. It means that with one driver IC 1, 2 or 3 LED strings can be driven independently of each other. It provides a cost effective design solution, specifically targeting automotive exterior and interior lighting applications. 2. General description The ASL3417SHN has a hysteretic buck DC-to-DC topology. With input voltages from 10 V to 80 V, it allows maximum flexibility on output voltages for each channel, enabling applications with up to 20 LEDs.