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AT9917 - Automotive LED Driver

Description

The AT9917 is an advanced fixed frequency PWM IC designed to control single-switch, boost, SEPIC, and buck LED drivers in a constant current mode.

Features

  • Switch mode controller for boost, SEPIC & buck converters.
  • Closed loop control of output current.
  • High PWM dimming ratio.
  • Internal 40V linear regulator.
  • Internal 3% voltage reference.
  • Constant frequency operation with programmable slope compensation.
  • Linear and PWM dimming.
  • Programmable jitter to reduce EMI.
  • +/-1.0A MOSFET gate driver.
  • Output short circuit protection.
  • Output over voltage protection.
  • Programmable hiccup timer.
  • Temp.

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Datasheet preview – AT9917

Datasheet Details

Part number AT9917
Manufacturer Supertex
File Size 738.33 KB
Description Automotive LED Driver
Datasheet download datasheet AT9917 Datasheet
Additional preview pages of the AT9917 datasheet.

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Full PDF Text Transcription

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Supertex inc. Automotive LED Driver IC with High Current Accuracy Features ► Switch mode controller for boost, SEPIC & buck converters ► Closed loop control of output current ► High PWM dimming ratio ► Internal 40V linear regulator ► Internal 3% voltage reference ► Constant frequency operation with programmable slope compensation ► Linear and PWM dimming ► Programmable jitter to reduce EMI ► +/-1.0A MOSFET gate driver ► Output short circuit protection ► Output over voltage protection ► Programmable hiccup timer ► Temperature fold-back with external NTC resistor ► Soft start ► Meets AEC-Q100 requirements www.DataSheet4U.
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