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AT9919

Part Number	AT9919
Manufacturer	Microchip
Description	Hysteretic Buck High-Brightness LED Driver
Published	Jan 15, 2017
Detailed Description	AT9919 Hysteretic Buck High-Brightness LED Driver with High-Side Current Sensing Features • AEC-Q100 Qualified • Hyste...
Datasheet	AT9919 PDF File

Overview

AT9919 Hysteretic Buck High-Brightness LED Driver with High-Side Current Sensing Features • AEC-Q100 Qualified • Hysteretic Control with High-side Current Sensing • Wide Input Voltage Range: 4.
5V to 40V • >90% Efficiency • Typical ±5% LED Current Accuracy • Up to 2 MHz Switching Frequency • Adjustable Constant LED Current • Analog or Pulse-Width Modulation (PWM) Control Signal for PWM Dimming • Overtemperature Protection • –40ºC to +125ºC Operating Temperature Range Applications • LED Lighting Applications • Automotive Applications General Description AT9919 is a PWM controller IC designed to drive high-brightness LEDs using a buck topology.
It operates from an input voltage of 4.
5 VDC to...

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