AL5809 60V Two Terminal Constant Current LED Driver Description
The AL5809 is a constant current linear LED driver and provides a cost-effective two pin solution. It has an excellent temperature stability of 20 ppm/°C and current accuracy ±5% regulated over a wide voltage and temperature range. The AL5809 comes in various fixed output current versions removing the need for external current setting resistors creating a simple solution for the linear driving of LEDs. It supports both the high-side and low-side driving of LED chains. The AL5809 turns on immediately and can swing from 2.5V up to 60V enabling drive long LED chains. The floating ground, 60V voltage rating between input and output pins designed to withstand the high peak voltage incurred in offline applications. The AL5809 is available in thermally robust package POWERDI-123 or SOD-123 package. Pin Assignments 1 IN AL5809
XX Y W X ADVANCED INFORMAT ON NEW PRODUCT OUT 2 Features Robust power package up to 1.2W for POWERDI-123 -40°C to +125°C temperature range ±5% LED current tolerance over temperature (15mA, 20mA, 30mA, 40mA, 50mA, 60mA, 90mA, 120mA, and 150mA) available in POWERDI-123 package (15mA, 20mA, 30mA, 40mA and 50mA) available in SOD-123 package, and other current options available by request Constant current with low temperature drift and high power supply rejection ratio 2.5V to 60V operating voltage between two terminals. Available in PowerDi-123 and SOD-123 in "Green" Molding Compound (No Br, Sb) (Note 1) with Lead-Free Finish/RoHS Compliant (Notes 2 & 3) Applications Offline LED Lamps LED Power Supplies White Goods LED Signs Instrumentation Illumination Notes: 1. Halogen- and Antimony-free "Green" products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 2. No purposely added lead. Fully compliant EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2). 3. See http://www.diodes.com for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free, "Green" and Lead-free. Typical Applications Circuit
VIN VIN 1 IN AL5809
1 IN AL5809 XX Y W X OUT 2 High Side LED String
OUT 2 AL5809
Document number: DS36625 Rev. 3 - 2 1 of 13 www.diodes.com XX Y W X Low Side LED String October 2014
© Diodes Incorporated AL5809 Pin Descriptions
Pin Name Pin Number (PowerDi-123) 1 Function LED current input terminal. For low side LED string application, connect the LED cathode terminal to the "In" terminal. For high side LED string application, connect the LED anode terminal to the "Out" terminal. LED Curr …