
SEMICONDUCTOR
TECHNICAL DATA
VOLTAGE REGULATOR
ORDERING INFORMATION
Order this document by MC1723C/D
P SUFFIX
PLASTIC PACKAGE
CASE 646
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
Device
Operating
Temperature
Range
Package
MC1723CD
MC1723CP
TA = 0
°
to +70
°
C
SO–14
Plastic DIP
Alternate
LM723CN
μ
A723PC
–
1
MOTOROLA ANALOG IC DEVICE DATA
The MC1723C is a positive or negative voltage regulator designed to
deliver load current to 150 mAdc. Output current capability can be increased
to several amperes through use of one or more external pass transistors.
MC1723C is specified for operation over the commercial temperature range
(0
°
to +70
°
C).
Output Voltage Adjustable from 2.0 Vdc to 37 Vdc
Output Current to 150 mAdc Without External Pass Transistors
0.01% Line and 0.03% Load Regulation
Adjustable Short Circuit Protection
Figure 1. Representative Schematic Diagram
Figure 2. Typical Circuit Connection
Figure 3. Typical NPN Current Boost Connection
Noninverting
Input
Inverting
Input
VEE
4
7
5
Current
Sense
Current
Limit
Compensation
VO
6.2V
Vz
9
1.0k
25k
500
5.0pF
30k
150
20k
300
100
15k
6
Vref
10
13
2
3
VCC
VC
11
12
15k
1.0k
6.2V
6.2V
5.0k
Vin
12
11
6
5
Cref
R3
(7 < VO < 37)
MC1723C
10
2
3
4
C1
100pF
13
7
RSC
R1
R2
For best results 10 k < R2 < 100 k
For minimum drift R3 = R1 | | R2
VO
7
ISC =
R1 + R2
R2
Vsense
RSC
0.66
RSC
VO
=
at TJ = + 25
°
C
Vin = 20Vdc
RSC = 0.33
VO = +15Vdc
IL = 2Adc max
12k
10k
4
C1
13
3
2
10
12
11
6
5
7
MC1723C
0.1
μ
F
2N3055 or Equiv
100pF
Motorola, Inc. 1996
Rev 5