AAT3194 Datasheet, PDF (5/14 Pages) Advanced Analogic Technologies – High Efficiency 1.5X Fractional Charge Pump For White LED Applications

AAT3194
High Efficiency 1.5X Fractional Charge
Pump For White LED Applications
Typical Characteristics
V_IN = 3.5V, C_IN = C_OUT = C₁ = C₂ = 1µF; T_A = 25°C, unless otherwise noted.
Quiescent Current vs. Temperature
1.00
0.98
0.96
0.94
0.92
0.90
0.88
0.86
-40
-20
0
20
40
60
80
100
Temperature (°C)
Efficiency vs. Supply Voltage
100
30mA
95
20mA
90
85
40mA
80
60mA
75
80mA
70
65
60
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
Supply Voltage (V)
Quiescent Current vs. Supply Voltage
1.2
1.1
1.0
0.9
0.8
0.7
0.6
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
Efficiency vs. Load Current
96
94
92
90
88
86
84
82
80
0
20
40
60
80
Load Current (mA)
Shutdown Current vs. Temperature
1.000
0.100
0.010
0.001
-40
-20
0
20
40
60
Temperature (°C)
80
100
3194.2006.09.1.0
Oscillator Frequency vs. Temperature
710
700
690
680
670
660
650
640
630
620
610
-40
-20
0
20
40
60
80
100
Temperature (°C)
5