Datasheet

LT1054
SWITCHED-CAPACITOR VOLTAGE CONVERTERS
WITH REGULATORS
SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004
22
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
5 V
V
I
= 5 V
1N5817
V
O
8 V
LT1054
V
OUT
V
REF
OSC
V
CC
CAP−
GND
CAP+
FB/SD
10 kΩ
10 kΩ
0.1 μF
10 kΩ
5.5 kΩ
2.5 kΩ
100 μF
0.03 μF
10 μF
2 μF
1/2
LT1013
1N5817
50 kΩ
Pin numbers shown are for the P package.
+
1
2
4
8
7
6
5
3
+
+
−
+
Figure 30. Positive Doubler With Regulation (5-V to 8-V Converter)
−V
O
1N4001
1N4001
R2
1 MΩ
R1
60 kΩ
V
I
3.5 V to 15 V
LT1054
V
OUT
V
REF
OSC
V
CC
CAP−
GND
CAP+
FB/SD
10 μF
100 μF
100 μF
2 μF
10 μF
0.002 μF
V
I
= 3.5 V to 15 V
V
O
MAX ≈ 2 V
IN
+ (V
L
+ 2 V
Diode
)
V
L
= LT1054 Voltage Loss
Pin numbers shown are for the P package.
1
2
4
8
7
6
5
3
+
+
+
+
+
R2 + R1
ǒ
Ť
V
OUT
Ť
V
REF
2
* 40 mV
) 1
Ǔ
+ R1
ǒ
Ť
V
OUT
Ť
1.21 V
) 1
Ǔ
+
Figure 31. Negative Doubler With Regulator