CA723, CA723C
Typical Application Circuits
V+
R2
V
REF
V
C
V
Z
V
O
CURRENT
LIMIT
CURRENT
SENSE
R3
3kΩ
R1
NON
INV.
INPUT
INV.
INPUT
COMP
REGULATED
OUTPUT-15V
NON
INV
INPUT
CURRENT R
SCP
LIMIT
CURRENT
SENSE
INV.
INPUT
COMP
C1
100pF
REGULATED
OUTPUT 15V
R1
R2
R5
2kΩ
V
REF
(Continued)
V
I
V+
V
I
V
C
V
O
R4
3kΩ
V-
C1
100pF
V-
Circuit Performance Data:
Line Regulation (∆V
I
= 3V) 1mV
Load Regulation (∆I
L
= 100mA) 2mV
Note: For Applications Employing the TO-5 Style Package
and Where V
Z
Is Required, An External; 6.2V Zener Diode
Should be Connected in Series with V
O
(Terminal 6).
FIGURE 22. NEGATIVE VOLTAGE REGULATOR CIRCUIT
Circuit Performance Data:
Line Regulation (∆V
I
= 3V) 1.5mV
Load Regulation (∆I
L
= 1A) 15mV
FIGURE 23. POSITIVE VOLTAGE REGULATOR CIRCUIT (WITH
EXTERNAL n-p-n PASS TRANSISTOR)
V
I
R3
60Ω
V
C
V
O
2N5956
OR
2N6108
V
I
V+
V
C
REGULATED
OUTPUT 5V
R3
2.7kΩ
R
SCP
30Ω
R4
5.6kΩ
V+
V
REF
V
REF
V
O
R1
CURRENT
LIMIT
CURRENT
SENSE
R
SCP
R1
CURRENT
LIMIT
CURRENT
SENSE
R2
NON
INV
INPUT
V-
INV.
INPUT
COMP
C1
0.001µF
REGULATED
OUTPUT 5V
R2
NON
INV
INPUT
V-
INV.
COMP INPUT
C1
0.001µF
Circuit Performance Data:
Line Regulation (∆V
I
= 3V) 0.5mV
Load Regulation (∆I
L
= 1A) 5mV
FIGURE 24. POSITIVE VOLTRAGE REGULATOR CIRCUIT
(WITH EXTERNAL p-n-p PAS TRANSISTOR)
Circuit Performance Data:
Line Regulation (∆V = 3V) 0.5mV
Load Regulation (∆I
L
= 10mA) 1mV
Short Circuit Current 20mA
FIGURE 25. FOLDBACK CURRENT LIMITING CIRCUIT
7-9
HARRIS [ HARRIS CORPORATION ]
