AAT3113/4
High Efficiency 1.5X Fractional Charge
Pumps For White LED Applications
Typical Characteristics
(unless otherwise noted: VIN=3.5V, CIN=COUT=C1=C2=1µF, TA=25°C)
Quiescent Current vs. Temperature
Efficiency vs. Supply Voltage
100%
30 mA
20 mA
1.000
95%
90%
85%
0.980
0.960
40 mA
0.940
0.920
0.900
0.880
0.860
80%
75%
70%
65%
60%
60 mA
80 mA
120 mA
-40
-20
0
20
40
60
80
100
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
Supply Voltage (V)
Temperature (°C)
Efficiency vs. Load Current
Quiescent Current vs. Supply Voltage
96%
94%
92%
90%
88%
86%
84%
82%
80%
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0
20
40
60
80
100
120
3.0
3.5
4.0
4.5
5.0
5.5
Load Current (mA)
Supply Voltage (V)
Shutdown Current vs. Temperature
Oscillator Frequency vs. Temperature
1.000
0.100
0.010
0.001
710
700
690
680
670
660
650
640
630
620
610
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
Temperature (°C)
Temperature (°C)
4
3113.2004.07.1.4
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
