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AAT1236 Datasheet(PDF) 6 Page - Advanced Analog Technology, Inc.

Part No. AAT1236
Description  High Efficiency White LED Drivers for Backlight and Keypad
Download  24 Pages
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Maker  AAT [Advanced Analog Technology, Inc.]
Homepage  http://www.aatech.com.tw
Logo AAT - Advanced Analog Technology, Inc.

AAT1236 Datasheet(HTML) 6 Page - Advanced Analog Technology, Inc.

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AAT1236
High Efficiency White LED Drivers
for Backlight and Keypad
6
1236.2007.02.1.1
Typical Characteristics
Shutdown Current vs.
Supply Voltage and Temperature
Supply Voltage (V)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
85
°C
25
°C
-40
°C
LED Current vs. Supply Voltage
Supply Voltage (V)
18.4
18.6
18.8
19.0
19.2
19.4
19.6
19.8
20.0
2.7
3.1
3.4
3.8
4.1
4.5
4.8
5.2
5.5
IB2
IB1
IA3
IA2
IA1
LED Current Accuracy vs. Supply Voltage
Supply Voltage (V)
-3
-2
-1
0
1
2
3
2.7
3.1
3.4
3.8
4.1
4.5
4.8
5.2
5.5
IB1, B2, A1, A2, A3
Efficiency vs. LED Current
(Group A and B On)
LED Current (mA)
79
80
81
82
83
84
85
86
1.6
3.9
6.2
8.5
10.8
13.1
15.4
17.7
20
VIN = 5V
VIN = 4.2V
VIN = 3.6V
Efficiency vs. LED Current
(Group B Off; Group A On)
LED Current (mA)
77
78
79
80
81
82
83
84
1.6
3.9
6.2
8.5
10.8
13.1
15.4
17.7
20
VIN = 4.2V
VIN = 3.6V
VIN = 5V
Efficiency vs. LED Current
(Group B On; Group A Off)
LED Current (mA)
76
77
78
79
80
81
82
83
1.6
3.9
6.2
8.5
10.8
13.1
15.4
17.7
20
VIN = 4.2V
VIN = 3.6V
VIN = 5V


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