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PDF AL5812 Data sheet ( Hoja de datos )
| Número de pieza | AL5812 | |
| Descripción | 150mA ADJUSTABLE LINEAR LED DRIVER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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AL5812
60V, 150mA ADJUSTABLE LINEAR LED DRIVER
Description
The AL5812 is an adjustable Linear LED driver offering excellent
temperature stability and output handling capability. The AL5812
simplifies the design of linear and isolated or non-isolated LED
drivers by setting the LED current with standard value resistors.
The AL5812 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 overheads 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 150mA
(commonly referred to as ½W LEDs).
Longer LED chains can be driven by tapping VCC from the chain,
where the chain voltage may exceed 60V.
The AL5812 is available in the exposed pad MSOP-8EP and
U-DFN3030-6 packages.
Pin Assignments
(Top View)
VCC 1
NC 2
NC 3
RSET 4
MSOP-8EP
(Top View)
8 LED
7 NC
6 NC
5 GND
VCC 1
6 LED
NC 2
RSET 3
Exposed
Pad
5 NC
4 GND
Features
• Low Reference Voltage (VRSET = 0.5V)
• -40°C to +125°C Temperature Range
• ±3% LED Current Tolerance
• Low Temperature Drift
• 1V 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)
U-DFN3030-6
Applications
• Isolated Offline LED Converters
• Linear LED Driver
• LED Signs
www.DataSheet.net/
•
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
VIN
CIN 0.1µF
RSET 7k5
VCC LED
AL5812
RSET
GND
VIN
CIN 0.1µF
VCC LED
AL5812
RSET
GND
RSET 7k5
AL5812
Document number: DS35616 Rev. 1 - 2
1 of 12
www.diodes.com
September 2012
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
AL5812
Typical Performance Characteristics
145
140
RSET = 4.99kΩ
120
100
80
RSET = 7.5kΩ
60
RSET = 12.4kΩ
40
20 VLED = 1.2V
TA = +25°C
0
0 5 10 15 20 25 30 35 40 45 50 55 60
INPUT VOLTAGE (V)
Figure 1 LED Current vs. Input Voltage
RSET = 4.99kΩ
VIN = 3.5V
TA = +25°C
160
140
RSET = 4.99kΩ
120
100
80
RSET = 7.5kΩ
60
RSET = 12.4kΩ
40
20 VLED = 1.2V
VCC = 3.5V
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Figure 2 LED Current vs. Ambient Temperature
160
140
120
RSET = 4.99kΩ
VIN = 3.5V
TA = +25°C
RSET = 7.5kΩ
100
80
RSET = 7.5kΩ
RSET = 12.4kΩ
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60
40
RSET = 12.4kΩ
20
0 5 10 15 20 25 30
LED VOLTAGE (V)
Figure 3 LED Current vs. LED Pin Voltage (Note 11)
160
140
RSET = 4.99kΩ
0
0 0.5 1.0 1.5 2.0 2.5 3.0
LED VOLTAGE (V)
Figure 4 LED Current vs. LED Pin Voltage Zoomed
160
140
RSET = 4.99kΩ
120
100
80
RSET = 7.5kΩ
120
100
80
RSET = 7.5kΩ
60 60
RSET = 12.4kΩ
RSET = 12.4kΩ
40
TA = +25°C
2 LEDs
20
0
0 5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Figure 5 LED Current vs. Input Voltage - 2 LEDs
(Note 11 & 12)
40
20
TA = +25°C
VCC pin tied to LED pin
2 LEDs
0
0 2 4 6 8 10 12 14 16 18 20 22
INPUT VOLTAGE (V)
Figure 6 LED Current vs. Input Voltage
2 LEDs - High Side Drive (Notes 11, 12 &13)
Notes:
11. These curves have been limited at larger input voltages due to power dissipation.
12. Lower input voltage range is limited by the LED chain voltage
13. The AL5812 has its VCC pin connected to its LED pin, which are connected to the positive input supply voltage. RSET is connected to AL5812 GND
pin, which is connected to the anode of the LED chain. This creates a high side driver of the LED chain. See Figure 15.
AL5812
Document number: DS35616 Rev. 1 - 2
5 of 12
www.diodes.com
September 2012
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for latest version.
(1) MSOP-8EP
XC
G
Y2
X1
Y
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
AL5812
(2) U-DFN3030-6
Y
X2
C
G
X1
Z
Dimensions Value (in mm)
Z 2.75
www.DataSheet.net/
G 0.57
X1 1.86
X2 0.45
Y 0.34
C 1.205
AL5812
Document number: DS35616 Rev. 1 - 2
11 of 12
www.diodes.com
September 2012
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.co.kr/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AL5812.PDF ] | |
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