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AL8866Q - BUCK AND SEPIC LED CONTROLLER

Datasheet Summary

Description

The AL8866Q is a Buck-Boost, Boost, Buck and SEPIC (single-ended primary-inductance converter) DC-Switching controller designed to drive an external MOSFET for high power automotive LED applications such as automotive front lighting.

Features

  • AEC-Q100 (Grade 1).
  • Wide Input Voltage Range from 4.7V to 85V.
  • Pre-Fixed 400kHz Switching Frequency (Factory Set).
  • Spread Spectrum Frequency Modulation for Low EMI.
  • Analog Dimming Range: 1% to 100%.
  • 100% Dimming Level ±3% Current Accuracy.
  • 20% Dimming Level ±12% Current Accuracy.
  • PWM Dimming Ratio 100:1 at 200Hz PWM Frequency.
  • Programmable Soft Start.
  • Fault Status Indicator for Protections.
  • Output Overvol.

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Datasheet preview – AL8866Q

Datasheet Details

Part number AL8866Q
Manufacturer DIODES
File Size 1.06 MB
Description BUCK AND SEPIC LED CONTROLLER
Datasheet download datasheet AL8866Q Datasheet
Additional preview pages of the AL8866Q datasheet.

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Full PDF Text Transcription

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AL8866Q BUCK-BOOST, BOOST, BUCK AND SEPIC LED CONTROLLER Description The AL8866Q is a Buck-Boost, Boost, Buck and SEPIC (single-ended primary-inductance converter) DC-Switching controller designed to drive an external MOSFET for high power automotive LED applications such as automotive front lighting. The AL8866Q operates within a wide input power supply range from 4.7V to 85V. The AL8866Q bases on a fixed-frequency, peak current-mode control architecture to incorporate spread spectrum frequency modulation technique and achieve Low EMI performance. The AL8866Q modulates LED current with analog or PWM dimming techniques. Analog dimming response with over 100:1 Linear range is obtained by varying the voltage at the DIM pin.
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