AAT3141
High Efficiency 1X/1.5X/2X Charge Pump
for White LED Applications
Typical Characteristics
(Unless otherwise noted, VIN = 3.5V, CIN = CCP = C1 = C2 = 1µF, TA = 25°C)
Input Current vs. Input Voltage
(4 x 10mA)
Input Current vs. Input Voltage
(4 x 30mA)
90
80
70
60
50
40
30
20
10
0
300
250
200
150
100
50
VDIODE = 3.4V
VDIODE = 3.4V
VDIODE = 3.0V
VDIODE = 3.0V
0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
VIN (V)
VIN (V)
Diode Current vs. Input Voltage
(30mA, 15mA settings)
VIH and VIL vs. VIN
0.850
0.825
0.800
0.775
0.750
0.725
0.700
0.675
0.650
0.625
0.600
40
35
30
25
20
15
10
VDIODE = 3.4V
VIH
VIL
VDIODE = 3.4V
2.5
3.0
3.5
4.0
4.5
5.0
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
VIN (V)
VIN (V)
3141.2004.07.0.91
9
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
