AAT3194 Datasheet, PDF (6/14 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.
Normalized I_DIODE vs. Temperature
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
-40
-20
0
20
40
60
80
100
Temperature (°C)
I_DIODE Response
(-31dB to 0dB)
ENSET
(2V/div)
0dB
I_DIODE
-31dB
Time (10µs/div)
100
80
60
40
20
0
3.0
I_DIODE vs. V_IN
3.5
4.0
V_IN (V)
I_DIODE Response
(-9dB to -10dB)
ENSET
(2V/div)
I_DIODE
0dB
-10dB
-9dB
-31dB
4.5
Time (10µs/div)
I_DIODE vs. V_DIODE
100
80
60
40
20
0
3.0
3.2
3.4
3.6
3.8
4.0
V _DIODE (V)
6
V_IH and V_IL vs. V_IN
1.000
0.975
0.950
0.925
0.900
0.875
0.850
0.825
0.800
0.775
0.750
2.5
V_IH
V_IL
3.0
3.5
4.0
4.5
V_IN (V)
5.0
5.5
3194.2006.09.1.0