AL5809Q
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AL5809Q
AUTOMOTIVE COMPLIANT 60V TWO TERMINAL CONSTANT CURRENT LED DRIVER
PowerDI123 (Type B)
Description
The AL5809Q is a constant current linear LED driver that provides a
cost-effective two-pin solution to LED driving. It has an excellent
temperature stability of 20ppm/°C with tight ±5% current accuracy
over a wide voltage and temperature range. The AL5809Q 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 AL5809Q turns on after a short delay once the voltage across its
terminals reaches approximately 1.5V. Its maximum 60V voltage
rating between input and output pins enables it to withstand high
peak transient voltages that can occur in automotive applications.
The AL5809Q is available in the thermally robust PowerDI®123 (Type
B) package. The AL5809Q has been qualified to AEC-Q100 and is
Automotive Compliant supporting PPAPs.
Features
Robust Power Dissipation Up to 1.5W for PowerDI123 (Type B)
-40°C to +150°C Junction Temperature Range
±5% LED Current Tolerance
Large Number of Output Current Options available in
PowerDI123 (Type B) Package:
15mA, 20mA, 25mA, 30mA, 40mA, 50mA and 60mA
qualified to AEC-Q100 Grade 1
90mA, 100mA, 120mA, and 150mA qualified to
AEC-Q100 Grade 3
2.5V to 60V Operating Voltage Between Two Terminals
Automotive Compliant with TS16949 Certification
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
PPAP Capable (Note 4)
Pin Assignments
Applications
Automotive Interior Lamps
Automotive Parking Lights
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/quality/lead_free.html 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.
4. Automotive products are AEC-Q100 qualified and are PPAP capable. Refer to http://www.diodes.com/quality/product_compliance_definitions/.
Typical Applications Circuit
PowerDI is a registered trademark of Diodes Incorporated.
AL5809Q
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AL5809Q
Pin Descriptions
Pin Name
Pin Number
(PowerDI123 (Type B))
Function
IN
1
LED Current Input Terminal
Current flows IN to this pin.
For low-side LED string application, connect the LED cathode terminal to the “IN” terminal.
For high-side LED string application, connect the LED anode terminal to the “OUT” terminal.
OUT
2
LED Current Output Terminal
Current flows OUT of this pin.
For low-side LED string application, connect the LED anode terminal to the “OUT” terminal.
For high-side LED string application, connect the LED cathode terminal to the “OUT” terminal.
Functional Block Diagram
AL5809Q
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AL5809Q
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
VINOUT
“\” Voltage Relative to “OUT” Pin
80
V
IINOUT
LED Current from “In” to “OUT”
180
mA
ESD HBM
Human Body Model ESD Protection
4,000
V
ESD MM
Machine Model ESD Protection
400
V
ESD CDM
Charged Device Model ESD Protection
1,000
V
TJ
Operating Junction Temperature
-40 to +175
°C
TST
Storage Temperature
-55 to +150
°C
Caution: Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when
handling and transporting these devices.
Package Thermal Data
Package
θJC
Thermal Resistance
Junction-to-Case
θJA
Thermal Resistance
Junction-to-Ambient
PDIS
TA = +25°C, TJ = +150°C
PowerDI123 (Type B)
27.15°C/W
148.6°C/W (Note 5)
0.84W
PowerDI123 (Type B)
17.81°C/W
81.4°C/W (Note 6)
1.53W
Notes: 5. Test condition for PowerDI123 (Type B): Device mounted on 25.4mm x 25.4mm FR-4 PCB (10mm x 10mm 1oz copper, minimum recommended pad
layout on top layer and thermal vias to bottom layer ground plane). For better thermal performance, larger copper pad for heatsink is needed.
6. When mounted on 50.8mm x 50.8mm GETEK PCB with 25.4mm x 25.4mm copper pads.
Recommended Operating Conditions (Note 8)
Symbol
Parameter
Min
Max
Unit
VINOUT
“IN” Voltage Range Relative to “OUT” Pin (Notes 7 and 8)
2.5
60
V
IINOUT
LED Current (Note 9)
15
150
mA
tPWM(ON)
PWM pulse width in dimming mode on-time
500
—
µs
tPWM(OFF)
PWM pulse width in dimming mode on-time
500
—
TJ
Operating Junction Temperature Range (Note 8)
-40
+150
°C
TA
Operating Ambient Temperature Range AEC-Q100 Grade 3 (Note 8)
-40
+85
°C
TA
Operating Ambient Temperature Range AEC-Q100 Grade 1 (Note 8)
-40
+125
°C
AL5809Q
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AL5809Q
Electrical Characteristics (VINOUT = 3.5V) (@TA = +25°C, unless otherwise specified.) (Note 8)
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VINOUT
In-Out Supply Voltage
(Notes 7 and 8)
TJ = -40°C to +150°C
2.5
—
60
V
IINOUT
IINOUT Current Accuracy
AL5809-15QP1-7
TJ = +25°C
14.25
15
15.75
mA
TJ = -40°C to +150°C
12.8
—
17.3
AL5809-20QP1-7
TJ = +25°C
19
20
21
TJ = -40°C to +150°C
17
—
23
AL5809-25QP1-7
TJ = +25°C
23.75
25
26.25
TJ = -40°C to +150°C
21.4
—
28.6
AL5809-30QP1-7
TJ = +25°C
28.5
30
31.5
TJ = -40°C to +150°C
25.8
—
34.2
AL5809-40QP1-7
TJ = +25°C
38
40
42
TJ = -40°C to +150°C
34.6
—
45.4
AL5809-50QP1-7
TJ = +25°C
47.5
50
52.5
TJ = -40°C to +150°C
44
—
56
AL5809-60QP1-7
TJ = +25°C
57
60
63
TJ = -40°C to +150°C
54
—
66
AL5809-90QP1-7
TJ = +25°C
85.5
90
94.5
TJ = -40°C to +150°C
81
—
99
AL5809-100QP1-7
TJ = +25°C
95
100
105
TJ = -40°C to +150°C
90
—
110
AL5809-120QP1-7
TJ = +25°C
114
120
126
TJ = -40°C to +150°C
108
—
132
AL5809-150QP1-7
TJ = +25°C
142.5
150
157.5
TJ = -40°C to +150°C
135
—
165
ILINE
IINOUT Current Line Regulation
VINOUT = 2.5V to 60V
(Note 10)
TA = +25°C
—
1
—
%/V
VMIN
Minimum Power Up Voltage
Increase VINOUT (Note 11)
TJ = -40°C to +150°C
1
1.5
2
V
TSHDN
Thermal Shutdown Junction
Temperature
—
—
—
+165
—
°C
THYS
Thermal Shutdown Hysteresis
—
—
—
+30
—
°C
Notes: 7. All voltages unless otherwise stated are measured with respect to the OUT Pin.
8. Subject to maximum junction temperature of +150°C not being exceeded. The Maximum ambient temperature range is limited by device power
dissipation; such that its junction temperature should be kept less than or equal to +150°C. See Page 5 for more information on power dissipation.
Devices have been qualified to AEC-Q100 Grade 3 and Grade 1.
9. The LED operating current is determined by the AL5809Q current option index XXX, AL5809Q-XXXP1-7.
10. Measured percentage change of LED current variation when VINOUT varies from 2.5V to 60V for each current option.
11. Apply the power linearly to the chip until the device starts to turn on.
AL5809Q
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AL5809Q
Application Information
Description
The AL5809Q is a constant current linear LED driver that can be connected on the high side or low side of the LEDs as a Constant Current
Regulator (CCR). The AL5809Q is available in various output current options from 15mA up to 150mA.
The AL5809Q contains a Low Dropout regulator which provides power to the internal current regulation control block. A fixed preset LED current
setting resistor sets the reference current of the current regulation block. The LED current setting resistor varies with each variant of the AL5809.
An accurate current mirror within the current regulation control block then increases the reference current to the preset LED current of the
AL5809Q.
Simple LED String
The number of LEDs that the AL5809Q can drive depends on the forward voltage drop of the LEDs and the input supply voltage (minus the
minimum operating voltage of the AL5809Q). The designer needs to calculate the maximum voltage between In and Out by taking into account
the maximum input voltage less the voltage across the LED string (Figures 1 & 2).
Figure 1 Low-Side LED String Drive
Figure 2 High-Side LED String Drive
The AL5809Q can also be used on the high-side of the LEDs (See Figure 2). The minimum system input voltage can be calculated by:
VIN(MIN) = VLED_CHAIN + 2.5V Where VLED_CHAIN is the LED chain voltage and 2.5V is the minimum VIO(OUT) voltage of the AL5809Q.
The LED current can be increased by connecting two or more AL5809Q in parallel shown in Figure 3.
Figure 3 Higher LED Current by Parallel Configuration of AL5809Q
(a) Low-Side Configuration
(b) High-Side Configuration
AL5809Q
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AL5809Q
Application Information (Continued)
Power Dissipation
The maximum ambient temperature range of the AL5809Q is determined by its power dissipation and thermal impedance of the PCB onto which
it is mounted. Its junction temperature must be kept equal to or less than +150°C.
The power dissipated is determined by the LED current version that has been selected (15, 20, 25 30, 40, 50, 60, 90, 100, 120 or 150mA) and
the difference between the input voltage and LED chain voltage.
VINOUT * ILED
In automotive applications the typical input voltage will be around 13V but can vary between 9V (without stop-start operation) and approximately
16V.
The recommended minimum VINOUT voltage of 2.5V enables the AL5809Q to drive 2 LED in series from the 9V battery voltage (assuming
VLED <3.25V).
The AL5809Q’s power dissipation under these conditions will be:
VINOUT * ILED = 2.5 * ILED
So for the 20mA AL5809-20QPI under these conditions this equals:
2.5V * 20mA = 50mW
Under maximum input conditions (16V) the AL5809Q’s power dissipation will be:
VINOUT * ILED = 9.5 * ILED
So for the 20mA AL5809-20QPI this equals:
9.5V * 20mA = 190mW
So there is a large difference in power dissipation of the Linear LED driver between minimum and maximum battery voltages. And care must be
taken to calculate expected power dissipations and then determining the suitable PCB material and layout. See Figures 4 and 5 for graphs
showing power dissipation and maximum VINOUT, for different currents and PCB material. Maximizing the area and mass of the ground plane
with additional vias between the pad of the Out Pin will improve the thermal impedance (JA) of the AL5809Q.
Figure 4 Power Dissipation vs. Ambient Temperature
@ TJ = +150°C
Figure 5 Maximum VINOUT vs. Ambient Temperature
@ TJ = +150°C
AL5809Q
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AL5809Q
Application Information (Cont.)
PWM Dimming
The AL5809Q can be used to provide LED current dimming driving the Out Pin via an external MOSFET switch to Ground (Figure 6a) for high-
side connected LEDs or a high-side switch for Ground-connected LEDs. The Out Pin current is then effectively switched on and off causing the
LED current to turn on and off. The dimming effect can be achieved by varying the PWM signal duty cycle.
a) PWM Dimming by External MOSFET
b) PWM Dimming by Power Supply VIN ON/OFF
Figure 6 PWM Dimming
Recommended PWM Frequency and Dimming Range
PWM Frequency
(Hz)
Duty Cycle (%)
Minimum
Maximum
100
5
95
200
10
90
Test conditions (Figure 6a): PWM frequency 100Hz–200Hz Square
wave, 0-4V gate voltage, VIN = 6V, 1 LED, AL5809-30mA
Use the following formulae to calculate the Min and Max duty cycle:
Min. Duty cycle (%) =
Max. Duty cycle (%) =
Notes: tON_MIN = 500µs (Min. value), and tOFF_MIN = 500µs (Min. value) as
listed in the Recommended Operating Conditions – see also Figure 7.
Figure 7 Minimum On Pulse Width (tON_MIN)
PWM Dimming Performance
Figure 8 PWM Dimming 30mA vs. Duty Cycle
Figure 9 Low Duty Cycle Zoomed-in of Figure 7
AL5809Q
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AL5809Q
Typical Performance Characteristics (15mA, 20mA, 30mA, 40mA, 50mA Options)
0
10
20
30
40
50
60
0 5 10 15 20 25 30
LED Current [mA]
VInOut [V]
15mA
20mA
25mA
30mA
40mA
50mA
TA=25
Figure 10 LED Current vs. VINOUT
0
10
20
30
40
50
60
0 0.5 1 1.5 2 2.5 3
LED Current [mA]
VInOut [V]
15mA
20mA
25mA
30mA
40mA
50mA
TA = 25°C
Figure 11 Startup Minimum Operating Voltage
0
10
20
30
40
50
60
-40 -25 -10 520 35 50 65 80 95 110 125
LED Current [mA]
Temperature [⁰C]
15mA
20mA
25mA
30mA
40mA
50mA
Figure 12 LED Current vs. Ambient Temperature
-10
-8
-6
-4
-2
0
2
4
6
8
10
0 5 10 15 20 25 30 35 40 45 50 55 60
LED Current Accuracy [%]
VInOut [V]
15mA_25C
15mA_125C
15mA_-40C
Figure 13 LED Current Accuracy (%) vs. Across Temperature
Figure 14 THSD of 20mA Current Option
Figure 15 THSD of 40mA Current Option
-
5
0
5
10
15
20
25
100
105
110
115
120
125
130
135
140
145
150
155
160
LED Current [mA]
[mA]
Ambient Temperature [⁰C]
T_Shut Down
T_Recovery
VINOUT=3.5V
20mA
-
5
0
5
10
15
20
25
30
35
40
45
100
105
110
115
120
125
130
135
140
145
150
155
160
LED Current [mA]
Ambient Temperature [⁰C]
T_Recovery
T_Shut Down
VINOUT=
3.5V,
40mA
VINOUT [V]
VINOUT [V]
VINOUT [V]
AL5809Q
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AL5809Q
Typical Performance Characteristics (Continued) (60mA, 90mA, 150mA Options)
Figure 16 LED Current vs. VINOUT
0
20
40
60
80
100
120
140
160
0 0.5 1 1.5 2 2.5 3
LED Current [mA]
VInOut [V]
60mA
90mA
150mA
TA=25⁰C
Figure 17 Startup Minimum Operating Voltage
VInOut=3.5
Temperature[⁰C]
Figure 18 LED Current across Temperature
Figure 19 LED Current Accuracy (%) vs. VINOUT across
Temperature
Figure 20 THSD of 60mA Current Option
Figure 21 THSD of 150mA Current Option
0
20
40
60
80
100
120
140
160
0
5
10
15
20
25
30
LED Current [mA]
V
INOUT
[V]
60mA
90mA
150mA
TA=25⁰C
C
-
10
0
10
20
30
40
50
60
70
100
110
120
130
140
150
160
LED Current [mA]
Ambient Temperature [⁰C]
T_Shut Down
T_Recovery
VINOUT=3.5V
60mA
-
20
0
20
40
60
80
100
120
140
160
100
110
120
130
140
150
160
LED Current [mA]
Temperature [⁰C]
T_Recovery
T_Shut Down
VINOUT=3.5V
150mA
VINOUT [V]
VINOUT [V]
VINOUT =3.5V
AL5809Q
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AL5809Q
Ordering Information (Note 12)
Part Number
LED Current
Opion
Package
Code
Packaging
7” Tape and Reel
Qualification
(Note 13)
Quantity
Part Number
Suffix
AL5809-15QP1-7
15mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-20QP1-7
20mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-25QP1-7
25mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-30QP1-7
30mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-40QP1-7
40mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-50QP1-7
50mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-60QP1-7
60mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-90QP1-7
90mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-100QP1-7
100mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-120QP1-7
120mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
AL5809-150QP1-7
150mA
P1
PowerDI123 (Type B)
3,000
-7
Automotive Compliant
Notes: 12. For packaging details, go to our website at http://www.diodes.com/products/packages.html.
13. AL5809Q has been qualified to AEC-Q100 and is classified as “Automotive Compliant” supporting PPAP documentation.
60mA, 90mA, 100mA, 120mA and 150mA versions have been qualified to AEC-Q100 Grade 3.
15mA, 20mA, 25mA, 30mA, 40mA and 50mA have been qualified to AEC-Q100 Grade 1.
See AL5809 datasheet for commercial qualified versions.
Marking Information
PowerDI123 (Type B)
Part Number
Identification Code
AL5809-15QP1-7
C1
AL5809-20QP1-7
C2
AL5809-25QP1-7
CA
AL5809-30QP1-7
C3
AL5809-40QP1-7
C4
AL5809-50QP1-7
C5
AL5809-60QP1-7
C6
AL5809-90QP1-7
C7
AL5809-100QP1-7
CB
AL5809-120QP1-7
C8
AL5809-150QP1-7
C9
AL5809Q
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AL5809Q
Package Outline Dimensions
Please see http://www.diodes.com/package-outlines.html for the latest version.
PowerDI123 (Type B)
PowerDI123
(Type B)
Dim
Min
Max
Typ
A
3.50
3.90
3.70
B
2.60
3.00
2.80
C
1.63
1.93
1.78
D
0.93
1.00
0.98
E
0.85
1.25
1.00
H
0.15
0.25
0.20
L
0.50
0.80
0.65
All Dimensions in mm
Suggested Pad Layout
Please see http://www.diodes.com/package-outlines.html for the latest version.
PowerDI123 (Type B)
X
Y
X1
G
Dimensions
Value
(in mm)
G
2.000
X
1.050
X1
4.100
Y
1.500
Taping Orientation
The taping orientation of the other package type can be found on our website at https://www.diodes.com/assets/Datasheets/ap02007.pdf.
PowerDI123 (Type B)
L
EC
A
B
D
H
E
AL5809Q
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AL5809Q
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
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final and determinative format released by Diodes Incorporated.
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