AAT2805
Dual High Efficiency Charge Pump
for White LED and Flash Applications
Typical Characteristics–White LED Backlight Driver Section
EN/SET Latch Timeout vs. Input Voltage
EN/SET Latch Timeout (µs)
µ
350
400
EN/SET Off Timeout vs. Input Voltage
EN/SET Off Timeout (µs)
µ
300
250
200
150
100
50
0
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
350
300
250
200
150
100
50
0
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
-40°C
25°C
85°C
25°C
85°C
Input Voltage (V)
Input Voltage (V)
Input Ripple vs. Input Voltage
Enable Threshold High (V)
18
16
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
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
30mA
25°C
85°C
10mA
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
Input Voltage (V)
Input Voltage (V)
Enable Threshold Low vs. Input Voltage
Enable Threshold Low (V)
1.2
1.1
1
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)
2805.2005.05.1.2
9
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
