AL5812FF-7(2012) 查看數據表（PDF） - Diodes Incorporated.
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AL5812FF-7 Datasheet PDF : 12 Pages
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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
RSET = 12.4kΩ
100
80
60
40
RSET = 7.5kΩ
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
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