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ASL2417SHN Datasheet Enhanced two channel LED buck driver

Manufacturer: NXP Semiconductors

Overview: ASL2417SHN Enhanced two channel LED buck driver with limp-home Rev. 4 — 16 September 2019 Product data sheet 1. Introduction The ASL2417SHN is a two 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 ASL2417SHN supports up to two output channels. It means that with one driver IC, 1 or 2 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.

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General Description

The ASL2417SHN 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.

It also provides an output current of up to and above 1.5 A per channel.1 Furthermore, the output channels can be connected together to provide an even higher current.

Key Features

  • The ASL2417SHN 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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