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AL8843Q - AUTOMOTIVE COMPLIANT 40V 3A STEP-DOWN LED DRIVER

Description

The AL8843Q is a hysteresis mode DC-DC step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage.

Features

  • Qualified to AEC-Q100 Grade 1.
  • Wide Input Voltage Range: 4.5V to 40V.
  • Output Current up to 3A.
  • Internal 40V NDMOS Switch.
  • Typical 4% Output Current Accuracy.
  • Single Pin for On/Off and Brightness Control by DC Voltage or PWM Signal.
  • Recommended Analog Dimming Range: 10% to 100%.
  • Soft-Start.
  • High Efficiency (Up to 97%).
  • LED Short Protection.
  • Inherent Open-Circuit LED Protection.
  • Over Temper.

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Datasheet preview – AL8843Q

Datasheet Details

Part number AL8843Q
Manufacturer DIODES
File Size 1.11 MB
Description AUTOMOTIVE COMPLIANT 40V 3A STEP-DOWN LED DRIVER
Datasheet download datasheet AL8843Q Datasheet
Additional preview pages of the AL8843Q datasheet.

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Full PDF Text Transcription

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AL8843Q AUTOMOTIVE COMPLIANT 40V 3A STEP-DOWN LED DRIVER Description The AL8843Q is a hysteresis mode DC-DC step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device can operate from an input supply between 4.5V and 40V and provide an externally adjustable output current up to 3A. Depending upon supply voltage and external components, this converter can provide up to 60W of output power. The AL8843Q integrates the power switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current. Dimming can be realized by applying an external control signal to the CTRL pin.
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