MC1723C ON Semiconductor, MC1723C Datasheet - Page 5

• Manufacturer Part Number: MC1723C
• Description: Voltage Regulator
• Manufacturer: ON Semiconductor

0.1 F
+20V
V in
C ref
0.1 F
MOTOROLA ANALOG IC DEVICE DATA
+10V
V O
For best results 10 k < R1 +R2 < 100 k
For minimum drift R3 = R1 R2
Figure 20. +15 V, 1.0 A Regulator with Remote Sense
V in
+V in
^
2.2k
7
Figure 16. Typical Connection for 2 < V O < 7
Figure 18. +5.0 V, 1.0 A Switching Regulator
R1
R2
100
R1 + R2
5.1k
R2
1.0k
1.0M
12
11
12
11
6
5
6
5
2N4918 or Equiv
MC1723C
MC1723C
2N3055 or Equiv
11
12
I SC =
6
5
7
7
V sense
R SC
MC1723C
100pF
13
10
13
10
2
3
4
2
3
4
7
^
RSC
0.66
1000pF
R SC
10
at T J = + 25 C
2
3
4
10k
or Equiv
1N4001
0.33
12k
R3
V out
10
1mH
+ Sense V out
– Sense
100 F
Load
MC1723C
V out
+15V
+
–
V out
+5V
I SC
+ V in
+6.5V
+10V
V in2
V in1
Figure 19. +5.0 V, 1.0 A High Efficiency Regulator
I L
5.1k
2.0k
V in = –20 V
12
11
0.1 F
6
5
Figure 21. –15 V Negative Regulator
I knee
Figure 17. Foldback Connection
12
11
6
5
12
11
6
5
V ref
+
MC1723C
R A =
R SC =
MC1723C
–
7
1–a
MC1723C
(1– a ) I SC
a
V sense
7
10 k
7
10
13
4
2
3
100pF
V 2 = 14V
where a =
10
13
4
10
13
2
3
4
R A
10k
100pF
R SC
V sense
V ref
1000pF
V O
–
+
12k
10k
0.33
+
–
R1
R2
V out = –15 V
Iknee
10 F
ISC
2N3055
or Equiv
V out
V out
+5.0V
–1
5