AL8807AW5-7

NOT RECOMMENDED FOR NEW DESIGN USE AL8860 OR AL8861 AL8807A HIGH EFFICIENCY LOW EMI WIDE ANALOG DIMMING RANGE 36V 1A/1.3A BUCK LED DRIVER Description Pin Assignments (Top View) 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. SOT25 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. (Top View) 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 cooled down, Features • • • • • • •    • 8 VIN GND 2 7 N/C GND 3 6 SW CTRL 4 5 SW MSOP-8EP Applications 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: Open-Circuit LED protection LED Chain Short Circuited Over-Temperature Protection MSOP-8EP and SOT25: Available in “Green” Molding Compound (No Br, Sb) with lead Free Finish/ RoHS Compliant  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) Notes: SET 1 • • • General Illumination Lamps 12V Powered LED Lamps Wide Analog Dimming Range LED Lamps 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen and Antimony free, "Green" and Lead-Free. 3. Halogen and Antimony free "Green” products are defined as those which contain