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PDF AL5811 Data sheet ( Hoja de datos )
| Número de pieza | AL5811 | |
| Descripción | LINEAR 75mA ADJUSTABLE CURRENT LED DRIVER | |
| Fabricantes | Diodes | |
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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 RSET 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 VCC 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.
Pin Assignments
VCC 1
NC 2
NC 3
RSET 4
(Top View)
MSOP-8EP
(Top View)
8 LED
7 NC
6 NC
5 GND
VCC 1
NC 2
RSET 3
Exposed
Pad
6 LED
5 NC
4 GND
U-DFN3030-6
Features
Low Reference Voltage (VRSET = 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)
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. See http://www.diodes.com for more 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
Document number: DS35255 Rev. 2 - 2
1 of 13
www.diodes.com
March 2014
© Diodes Incorporated
1 page  
Typical Performance Characteristics (cont.)
14
RSET = 75K
12 VIN = 9V
10
08
06
Thys
04
Tshdn
02
0
125
0.494
130 135 140 145 150 155
AMBIENT TEMPERATURE(°C)
Thermal Shutdown MSOP-8EP
160
0.493
0.492
RSET = 15k
0.491
0.490
0.489
0.488
0.487
0.486
0.485
250
VCC = 3.5V
VLED = 1.0V
-40 25 125
AMBIENT TEMPERATURE (°C)
RSET Voltage vs. Ambient Temperature
200
RSET = 10K
150
100
RSET = 15K
RSET = 37.4K
AL5811
0.6
RSET = 15K
0.5
0.4
0.3
0.2
0.1
0
300
VLED = 1.0V
TA = +25°C
2 3 20
INPUT VOLTAGE (V)
RSET Voltage vs. Input Voltage
45
250
RSET = 10K
200
150 RSET = 15K
100
RSET = 37.4K
50
VLED = 1.0V
TA = +25°C
0
0 5 10 15 20 25 30 35 40 45 50 55 60
INPUT VOLTAGE (V)
Supply Current vs. Input Voltage
50
VCC = 3.5V
VLED = 1.0V
0
-40 25 125
AMBIENT TEMPERATURE (°C)
Supply Current vs. Ambient Temperature
AL5811
Document number: DS35255 Rev. 2 - 2
5 of 13
www.diodes.com
March 2014
© Diodes Incorporated
5 Page 
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
(1) MSOP-8EP
XC
GY
Y2
X1
Y1
Dimensions
C
G
X
X1
Y
Y1
Y2
Value
(in mm)
0.650
0.450
0.450
2.000
1.350
1.700
5.300
AL5811
(2) U-DFN3030-6
X2
X1
C
C -0.4 0 9
Y1 Y2
Y
X
Dimensions
C
X
X1
X2
Y
Y1
Y2
Value
(in mm)
0.950
0.500
2.400
2.550
0.600
1.780
3.300
AL5811
Document number: DS35255 Rev. 2 - 2
11 of 13
www.diodes.com
March 2014
© Diodes Incorporated
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AL5811.PDF ] | |
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