LT1054/LT1054L
TYPICAL APPLICATIONS
3.5V to 5V Regulator
V
IN
3.5V TO 5.5V
20k
1
2
3
4
8
7
6
5
1N914
+
LTC1044
1N914
1N914
+
1µF
FB/SHDN
V
+
5µF
+
CAP
OSC
R1
20k
R2
125k
+
LT1054
GND
10µF
V
REF
+
–
1µF
+
–
+
0.002µF
CAP
V
OUT
R2
125k
3k
V
OUT
= 5V
100µF
V
V
I
= 3.5V TO 5.5V
OUT
IN
= 5V
2N2219
= 50mA
OUT(MAX)
1N914
LT1054 • TA10
1N5817
Regulating 200mA, 12V to –5V Converter
5µF
12V
+
+
HP5082-2810
+
FB/SHDN
V
FB/SHDN
V
+
+
CAP
LT1054 #2
GND
OSC
CAP
LT1054 #1
GND
OSC
R1
39.2k
+
10Ω
1/2W
20k
10Ω
1/2W
10µF
V
V
REF
REF
10µF
R2
200k
–
–
0.002µF
CAP
V
OUT
CAP
V
OUT
+
LT1054 • TA11
200µF
|V
REF
|
|V
|
R2
=
OUT
OUT
1.21V
+
+ 1 =
+ 1 ,
R1
V
V
I
= –5V
= 0mA to 200mA
OUT
OUT
– 40mV
)
)
)
)
2
REFER TO FIGURE 5
Digitally Programmable Negative Supply
15V
+
11
5µF
20k
16
DIGITAL
INPUT
AD558
LT1004-2.5
2.5V
+
FB/SHDN
V
+
14
13
12
20k
CAP
OSC
+
LT1054
GND
10µF
V
REF
LT1054 • TA12
–
CAP
V
OUT
V
OUT
= –V (PROGRAMMED)
IN
100µF
+
1054lfg
12
Linear [ Linear ]
