LT1054_06 Datasheet, PDF (6/27 Pages) Texas Instruments – SWITCHED-CAPACITOR VOLTAGE CONVERTERS WITH REGULATORS

LT1054
SWITCHEDĆCAPACITOR VOLTAGE CONVERTERS
WITH REGULATORS
SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS
AVERAGE SUPPLY CURRENT
vs
OUTPUT CURRENT
140
120
100
OUTPUT VOLTAGE LOSS
vs
INPUT CAPACITANCE
1.4
1.2
IO = 100 mA
1.0
80
60
40
20
0
0
20
40
60
80
100
IO − Output Current − mA
Figure 5
0.8
IO = 50 mA
0.6
0.4
IO = 10 mA
Inverter Configuration
0.2 _{COUT = 100-µF Tantalum}
fOSC = 25 kHz
0
0 10 20 30 40 50 60 70 80
Input Capacitance − µF
Figure 6
90 100
OUTPUT VOLTAGE LOSS
vs
OSCILLATOR FREQUENCY
2.5
Inverter Configuration
2.25 CIN = 10-µF Tantalum
COUT = 100-µF Tantalum
2
1.75
1.5
IO = 100 mA
1.25
1
IO = 50 mA
0.75
0.5
0.25
0
1
IO = 10 mA
10
100
Oscillator Frequency − kHz
Figure 7
OUTPUT VOLTAGE LOSS
vs
OSCILLATOR FREQUENCY
2.5
Inverter Configuration
2.25 ^{CIN = 100-µF Tantalum}
COUT = 100-µF Tantalum
2
1.75
1.5
1.25
1
0.75
0.5
0.25
0
1
IO = 100 mA
IO = 50 mA
IO = 10 mA
10
100
Oscillator Frequency − kHz
Figure 8
6
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