AL5809 Datasheet, PDF (1/13 Pages) Diodes Incorporated – 60V Two Terminal Constant Current LED Driver

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
AL5809
1
IN
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
Low Side LED String
1
IN
AL5809
VIN
1
IN
AL5809
OUT
2
OUT
2
High Side LED String
AL5809
Document number: DS36625 Rev. 3 - 2
1 of 13
www.diodes.com
October 2014
© Diodes Incorporated