AAT2806
Dual High Efficiency Charge Pump
for White LED and Flash Applications
Typical Characteristics– White LED Backlight Driver Section
Input Ripple vs. Input Voltage
Enable Threshold High (V)
18
16
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Enable Threshold High vs. Input Voltage
Amplitude (mV)
14
12
10
8
6
4
2
0
2.50
2.67
2.84
3.01
3.18
3.35
3.52
3.69
3.86
4.03
4.20
-40°C
20mA
25°C
85°C
10mA
Input Voltage (V)
Input Voltage (V)
Enable Threshold Low vs. Input Voltage
Enable Threshold Low (V)
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
-40°C
25°C
85°C
Input Voltage (V)
2806.2007.09.1.9
9