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AL8841Q - AUTOMOTIVE 40V 1A/1.5A STEP-DOWN LED DQRIVER

Description

The AL8841Q 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

  • AEC-Q100 (Grade 1) Qualification.
  • Wide Input Voltage Range: 4.5V to 40V.
  • Output Current up to 1A for TSOT25 and 1.5A for MSOP-8EP.
  • 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.
  • Overtemperature Protect.

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Datasheet preview – AL8841Q

Datasheet Details

Part number AL8841Q
Manufacturer DIODES
File Size 1.28 MB
Description AUTOMOTIVE 40V 1A/1.5A STEP-DOWN LED DQRIVER
Datasheet download datasheet AL8841Q Datasheet
Additional preview pages of the AL8841Q datasheet.

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Full PDF Text Transcription

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AL8841Q AUTOMOTIVE 40V 1A/1.5A STEP-DOWN LEDQDRIVER Description Pin Assignments The AL8841Q 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 1A for TSOT25 and 1.5A for MSOP-8EP package. Depending upon supply voltage and external components, this converter can provide up to 60W of output power. (Top View) SW 1 GND 2 5 VIN The AL8841Q integrates the power switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.
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