The AL5809 is a constant current linear LED driver and it provides a
cost-effective two pin solution. It has an excellent temperature
stability of 20ppm/°C and the 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
The AL5809 turns on when the voltage between IN and OUT swings
from 2.5V up to 60V enabling it 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 either thermally robust package
PowerDI123 or SOD-123 package.
2.5V to 60V Operating Voltage Between Two Terminals
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, 25mA, 30mA, 40mA, 50mA, 60mA, 90mA,
100mA, 120mA, and 150mA Available in PowerDI123 Package
15mA, 20mA, 25mA, 30mA, 40mA and 50mA available in SOD-
123 Package, Other Current Options Available by Request
Constant Current with Low Temperature Drift and High Power
Supply Rejection Ratio
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
60V Two Terminal Constant Current LED Driver
Offline LED Lamps
LED Power Supplies
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"
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine
(<1500ppm total Br + Cl) and <1000ppm antimony compounds.
POWERDI is a registered trademark of Diodes Incorporated.
Document number: DS36625 Rev. 5 - 2
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© Diodes Incorporated