AL5812(2012) 查看數據表（PDF） - Diodes Incorporated.
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AL5812 Datasheet PDF : 12 Pages
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Typical Performance Characteristics (cont.)
110
100
90
80
TA = +25°C
2 LEDs
RSET = 7.5kΩ
fPWM = 100Hz
70
60
50
40
30
20
10
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
Figure 7 LED Current vs. PWM Duty Cycle
0.500
0.495
VLED = 1.2V
TA = +25°C
AL5812
14
VIN = 9V
12 RSET = 75KΩ
10
TSHDN
THYS
8
6
4
2
0
-2
125
0.500
0.495
130 135 140 145 150 155 160
TEMPERATURE (°C)
Figure 8 LED Current vs. TSHDN
VLED = 1.2V
VIN = 3.5V
0.490
0.485
0.480
RSET = 7.5kΩ
0.490
0.485
0.480
RSET = 7.5kΩ
0.475
0
400
5 10 15 20 25 30 35 40 45 50 55 60
INPUT VOLTAGE (V)
Figure 9 RSET Voltage vs. Input Voltage
350
300
RSET = 4.99kΩ
250
200
150
RSET = 7.5kΩ
RSET = 12.4kΩ
100
50 VLED = 1.2V
TA = +25°C
0
0 5 10 15 20 25 30 35 40 45 50 55 60
INPUT VOLTAGE (V)
Figure 11 Supply Current vs. Input Voltage
0.475
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (C)
Figure 10 RSET Voltage vs. Ambient Temperature
350
300
RSET = 4.99kΩ
250
200
RSET = 7.5kΩ
150
RSET = 12.4kΩ
100
50
VLED = 1.2V
VIN = 3.5V
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Figure 12 Supply Current vs. Ambient Temperature
AL5812
Document number: DS35616 Rev. 1 - 2
6 of 12
www.diodes.com
September 2012
© Diodes Incorporated
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