AL5811EV2 User Guide
75mA, 60V Low-side Adjustable Linear LED Driver
AL5811EV2 Rev2 Page 1 of 8
January 2013
www.diodes.com
General Description
The AL5811 is an adjustable Linear LED
driver offering excellent temperature
stability and output handling capability.
The AL5811 simplifies the design of linear
and isolated or non-isolated LED drivers by
setting the LED current with standard value
resistors.
The AL5811 has an open drain output that
can swing from 1V up to 60V enabling it
drive long LED chains. Its low 0.5V R
SET
pin
is outside of the LED current path and so
accuracy is maintained while minimizing
the required overhead to regulate the LED
current. This reduces its power dissipation
when compared to traditional linear LED
drivers. This makes it ideal for driving LEDs
up to 75mA. Longer LED chains can be
driven by tapping V
CC
from the chain,
where the chain voltage may exceed 60V.
The AL5811EV2 evaluation board provides
U-DFN3030-6 package.
Key Features
Low Reference Voltage (VRSET=0.5V)
-40˚C to 125˚C Temperature Range
MSOP-8EP and U-DFN3030-6 packages
Applications
Linear LED Driver
Isolated Offline LED Converters
LED Signs
Instrumentation Illumination
Specifications
3.5V – 60V (Low Side)
>60V (Floating GND)
Top-View EVM (AL5811EV2)
AL5811EV2 (U-DFN3030-6)
Connection Instructions
Input Voltage: Red Wire
Ground: Black Wires
LED: White Wire
