Datasheet

LT1054
SWITCHED-CAPACITOR VOLTAGE CONVERTERS
WITH REGULATORS
SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
40
20
120
0
0204060
Average Supply Current − mA
80
60
100
AVERAGE SUPPLY CURRENT
vs
OUTPUT CURRENT
140
80 100
I
O
− Output Current − mA
0.4
0.2
1.2
0
0 102030405060
Output Voltage Loss − V
0.8
0.6
1.0
OUTPUT VOLTAGE LOSS
vs
INPUT CAPACITANCE
1.4
70 80 90 100
I
O
= 100 mA
I
O
= 50 mA
I
O
= 10 mA
Inverter Configuration
C
OUT
= 100-μF Tantalum
f
OSC
= 25 kHz
Input Capacitance − μF
Figure 6
0
1 10 100
Output Voltage Loss − V
OUTPUT VOLTAGE LOSS
vs
OSCILLATOR FREQUENCY
2
1
I
O
= 100 mA
I
O
= 50 mA
I
O
= 10 mA
Inverter Configuration
C
IN
= 10-μF Tantalum
C
OUT
= 100-μF Tantalum
Oscillator Frequency − kHz
0.75
0.5
0.25
1.25
1.5
1.75
2.25
2.5
Figure 7
0
1 10 100
Output Voltage Loss − V
OUTPUT VOLTAGE LOSS
vs
OSCILLATOR FREQUENCY
2
1
I
O
= 100 mA
I
O
= 50 mA
I
O
= 10 mA
Inverter Configuration
C
IN
= 100-μF Tantalum
C
OUT
= 100-μF Tantalum
Oscillator Frequency − kHz
0.25
0.5
0.75
1.25
1.5
1.75
2.25
2.5
Figure 8