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AL8807 - HIGH EFFICIENCY LOW 36V 1A BUCK LED DRIVER

General Description

The AL8807 is a step-down DC/DC converter designed to drive LEDs with a constant current.

The device can drive up to 9 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 36V.

Key Features

  • LED Driving Current up to 1.3A (MSOP-8EP).
  • Better Than 5% Accuracy.
  • High Efficiency up to 96%.
  • Optimally Controlled Switching Speeds.
  • Operating Input Voltage from 6V to 36V.
  • PWM/DC Input for Dimming Control.
  • Built-In Output Open-Circuit Protection.
  • SOT25, MSOP-8EP: Available in “Green” Molding Compound (No Br, Sb).
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2).
  • Halogen and Antimony Free. “Green” D.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NOT RECOMMENDED FOR NEW DESIGN USE AL8860 OR AL8861 AL8807 HIGH EFFICIENCY LOW 36V 1A BUCK LED DRIVER Description The AL8807 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 9 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 36V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AL8807 switches at frequency up to 1MHz with controlled rise and fall times to reduce EMI. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AL8807 is set via an external resistor connected between the VIN and SET input pins.