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Description

The AL8807A is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 9 white high brightness LEDs in series from a voltage source of 6V to 36V. The AL8807A has an extended CTRL pin voltage range; increasing its analog dimming range to greater than 10:1. The improved analog dimming range makes it suitable for a variety of lighting applications requiring wide analog dimming ranges. The AL8807A 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 AL8807A is set via an external resistor connected between the VIN and SET input pins. Over Temperature Protection is incorporated so that should a fault occur the device will automatically shut-down and only restart when its junction temperature has coo°C down.

Application

  • General Illumination Lamps
  • 12V Powered LED Lamps
  • Wide Analog Dimming Range LED Lamps

Features

  • LED Driving Current up to 1A/1.3A
  • Better than 5% Accuracy
  • High Efficiency Up to 96%
  • Optimally Controlled Switching Speeds
  • Operating Input Voltage from 6V to 36V
  • Wide Analog Input Range for Dimming Control (>10:1)
  • Built-in Protection Features:

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
Topologies (Buck) Yes
Topologies (Buck-Boost) No
Topologies (Boost) No
Minimum Input Voltage 6 V
Maximum Input Voltage 36 V
Maximum Output Voltage 36 V
Maximum LED Current 1.3 A
LED Current Accuracy 5 %
Switching Frequency Maximum 1000 kHz
Dimming (PWM) No
Dimming (Analog) Yes
Efficiency 97 %
Operating Temperature Range -40 to 125 °C
Sense Voltage 100 mV
AEC-Q100 Grade No

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Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AL8807AMP-13 Arrow Electronics 4 1/26/2020 Buy Now United States
AL8807AMP-13 Digi-Key Electronics 1532 1/26/2020 Buy Now United States
AL8807AMP-13 Mouser Electronics Inc. 2473 1/26/2020 Buy Now United States
AL8807AMP-13 RS Components 4540 1/26/2020 Buy Now England
AL8807AMP-13 RS Components Ltd. 4540 1/26/2020 Buy Now Japan
AL8807AW5-7 Digi-Key Electronics 3086 1/26/2020 Buy Now United States
AL8807AW5-7 Mouser Electronics Inc. 2298 1/26/2020 Buy Now United States