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)
Efficiency vs. VIN
D1=3.5V, D2=3.3V, D3=3.2V, D4=3.0V
Efficiency vs. VIN
(Code 26)
100
90
80
70
60
50
40
30
100
90
80
70
60
50
40
30
Code 26
3.0VF
3.5VF
Code 32
Code 28
2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
VIN (V)
VIN (V)
Efficiency vs. VIN
D1-D2=3.5V, D3-D4=3.2V
100
90
80
70
60
50
40
30
Code 26
Code 32
Code 28
2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
VIN (V)
3141.2004.07.0.91
5