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LT1054 Datasheet, PDF (17/26 Pages) Linear Technology – Switched-Capacitor Voltage Converter with Regulator | |||
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LT1054
SWITCHEDÄCAPACITOR VOLTAGE CONVERTERS
WITH REGULATORS
SLVS033F â FEBRUARY 1990 â REVISED NOVEMBER 2004
APPLICATION INFORMATION
VIN
3.5 V to 15 V
+
2.2 µF
+
10 µF
1
FB/SD
8
VCC
2
CAP+
7
OSC
+ 10 µF
3
LT1054 #1 6
GND VREF
4
CAPâ
VOUT 5
VOUT
SET
R1
40 kâ¦
1
2
+ 10 µF
3
4
+
10 µF
FB/SD
VCC 8
CAP+ OSC
LT1054 #2
GND VREF
7
HP5082-2810
CAP+ of
LT1054 #1
6
20 kâ¦
CAPâ VOUT 5
1N4002
10 µF
+
0.002 µF +
1N4002
1N4002
1N4002
R2
1N4002
500 kâ¦
VOUT
100 µF
+
VIN = 3.5 V to 15 V
IOUT â
100 mA MAX
Ç Ç ÇŤ Ť Ç VOUT MAX â â2 VIN + [LT1054 Voltage Loss +2 (VDiode)]
R2 + R1
Ť Ť VOUT
VREF
2
*
40
mV
)
1
V
+ R1
OUT
1.21 V
)
1
Pin numbers shown are for the P package.
Figure 23. 100-mA Regulating Negative Doubler
+ 10 µF
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
17
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