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AL5809 Schematic ( PDF Datasheet ) - Diodes

Teilenummer AL5809
Beschreibung 60V Two Terminal Constant Current LED Driver
Hersteller Diodes
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Gesamt 13 Seiten
AL5809 Datasheet, Funktion
AL5809
60V Two Terminal Constant Current LED Driver
Description
The AL5809 is a constant current linear LED driver and provides a
cost-effective two pin solution. It has an excellent temperature
stability of 20 ppm/°C and 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
chains.
The AL5809 turns on immediately and can swing from 2.5V up to
60V enabling 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 thermally robust package POWERDI-123
or SOD-123 package.
Pin Assignments
AL5809
1
IN
OUT
2
Features
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, 30mA, 40mA, 50mA, 60mA, 90mA, 120mA, and
150mA) available in POWERDI-123 package
(15mA, 20mA, 30mA, 40mA and 50mA) available in SOD-123
package, and other current options available by request
Constant current with low temperature drift and high power
supply rejection ratio
2.5V to 60V operating voltage between two terminals.
Available in PowerDi-123 and SOD-123 in “Green” Molding
Compound (No Br, Sb) (Note 1) with Lead-Free Finish/RoHS
Compliant (Notes 2 & 3)
Applications
Offline LED Lamps
LED Power Supplies
White Goods
LED Signs
Instrumentation Illumination
Notes:
1. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
2. No purposely added lead. Fully compliant EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2).
3. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
Typical Applications Circuit
VIN
Low Side LED String
VIN
1
IN
AL5809
1
IN
AL5809
OUT
2
OUT
2
High Side LED String
AL5809
Document number: DS36625 Rev. 3 - 2
1 of 13
www.diodes.com
October 2014
© Diodes Incorporated






AL5809 Datasheet, Funktion
AL5809
Typical Performance Characteristics (15mA, 20mA, 30mA, 40mA, 50mA) PDI options
15mA 20mA 30mA 40mA 50mA
60
50
40
30
20
10 TA=25C
0
0 5 10 15 20 25 30
VInOut [V]
15mA 20mA 30mA 40mA 50mA
60
50
40
30
20
10 TA=25C
0
0 0.5 1 1.5 2 2.5 3
VIVnOIunt [OV]u, TtA[=V25]C
Figure 5 LED Current vs. VInOut
Figure 6 Startup Minimum Operating Voltage
15mA 20mA 30mA 40mA 50mA
60
50
40
30
20
LED Current [mA]
10
0
-40 -25 -10 5
VInOut=3.5V
20 35 50 65 80 95 110 125
Ambient Temperature [ C]
Figure 7 LED Current vs. Ambient Temperature
10
8
6
4
2
0
-2
-4
-6
-8
-10
0
15mA_25C
15mA_125C
15mA_-40C
5 10 15 20 25 30 35 40 45 50 55 60
VInOut [V]
Figure 8 LED Current Accuracy (%) vs. VInOut across
Temperature
T_Shut Down
T_Recovery
25
20
15
10
5
0LED Current [mA]
VInOut=3.5V
20mA
-5
100 105 110 115 120 125 130 135 140 145 150 155 160
Ambient Temperature [C]
Figure 9 THSD of 20mA Current Option
T_Recovery T_Shut Down
45
40
35
30
25
20
15
10
5LED Current [mA]
VInOut=
3.5V,
40mA
0
-5
100 105 110 115 120 125 130 135 140 145 150 155 160
Ambient Temperature [C]
Figure 10 THSD of 40mA Current Option
AL5809
Document number: DS36625 Rev. 3 - 2
6 of 13
www.diodes.com
October 2014
© Diodes Incorporated

6 Page









AL5809 pdf, datenblatt
AL5809
Taping Orientation
The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf.
(1) PowerDI-123 Type B
(2) SOD-123
AL5809
Document number: DS36625 Rev. 3 - 2
12 of 13
www.diodes.com
October 2014
© Diodes Incorporated

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