AL8807MP-13

AL8807 HIGH EFFICIENCY LOW 36V 1A BUCK LED DRIVER Description Pin Assignments The AL8807 is a step-down DC/DC converter designed to drive LEDs (Top View) with a constant current. The device can drive up to 9 LEDs, depending on the forward voltage of the LEDs, in series from a SW voltage source of 6V to 36V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating VIN GND the need for ballast resistors. The AL8807 switches at frequency up to 1MHz with controlled rise and fall times to reduce EMI. This allows CTRL the use of small size external components, hence minimizing the PCB SET area needed. SOT25 (Top View) Maximum output current of AL8807 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved SET VIN GND N/C GND SW CTRL SW by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming. Features  LED Driving Current up to 1.3A (MSOP-8EP)  Better Than 5% Accuracy  High Efficiency up to 96%  Optimally Controlled Switching Speeds Applications  Operating Input Voltage from 6V to 36V  MR16 Lamps  PWM/DC Input for Dimming Control General Illumination Lamps   Built-In Output Open-Circuit Protection 12V Powered LED Lamps   SOT25, MSOP-8EP: Available in “Green” Molding Compound  24V Powered LED Lamps MSOP-8EP (No Br, Sb)  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html 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