Diodes AL5811 User Manual
Al5811, New prod uc t al5811, Description
AL5811
Document number: DS35255 Rev. 1 - 2
1 of 13
January 2013
© Diodes Incorporated
NEW PROD
UC
T
AL5811
60V, LINEAR 75mA ADJUSTABLE CURRENT LED DRIVER
Description
The AL5811 is a Linear LED driver with an adjustable LED current up
to 75mA 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 AL5811 is available in the exposed pad MSOP-8EP and
U-DFN3030-6 packages.
Features
•
Low Reference Voltage (V
RSET
= 0.5V)
•
-40°C to +125°C Temperature Range
•
±6% Typical LED Current Tolerance
•
Low Temperature Drift
•
1.0V to 60V Open-Drain Output
•
High Power Supply Rejection
•
MSOP-8EP and U-DFN3030-6
•
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
LED
NC
NC
GND
R
SET
NC
NC
V
CC
1
2
3
4
8
7
6
5
(Top View)
MSOP-8EP
U-DFN3030-6
(Top View)
LED
NC
GND
V
CC
NC
R
SET
3
2
1
4
5
6
Exposed
Pad
Applications
•
Isolated Offline LED Converters
•
Linear LED Driver
• LED
Signs
•
Instrumentation Illumination
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. Se 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 <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
Typical Applications Circuit
AL5811
V
CC
LED
GND
R
SET
R
SET
10kΩ
V
IN
C
IN
0.1µF
V
IN
C
IN
0.1µF
AL5811
V
CC
LED
GND
R
SET
R
SET
10kΩ