MC1723C Datasheet, PDF (1/8 Pages) ON Semiconductor – VOLTAGE REGULATOR

Voltage Regulator
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
Order this document by MC1723C/D
MC1723C
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
Figure 1. Representative Schematic Diagram
VCC VC
12
11
P SUFFIX
PLASTIC PACKAGE
CASE 646
500
6.2V
15k
25k
1.0k
1.0k
15k
100
5.0pF
30k
6.2V
300
5.0k
20k
150
6 Vref
57
Noninverting
Input
VEE ⁴
Inverting
Input
Vz
9
6.2V
10
VO
13
Compensation
2 _Current
Limit
Current
3 ^Sense
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
ORDERING INFORMATION
Device
Alternate
Operating
Temperature
Range
Package
MC1723CD
–
MC1723CP LM723CN
µA723PC
SO–14
TA = 0° to +70°C _{Plastic DIP}
Figure 2. Typical Circuit Connection
12
Vin
11
6
R3
5
Cref
(7 < VO < 37)
10
2
3
MC1723C
4
C1
13
7
RSC
100pF
VO
R1
R2
^ VO
7
R1 + R2
R2
ISC =
Vsense
RSC
For best results 10 k < R2 < 100 k
For minimum drift R3 = R1 | | R2
=
0.66
RSC
at TJ = + 25°C
Figure 3. Typical NPN Current Boost Connection
Vin = 20Vdc
0.1µF
2N3055 or Equiv
12
10
11
2
3
MC1723C
6
4
5
C1
13
7
RSC = 0.33
VO = +15Vdc
IL = 2Adc max
12k
100pF
10k
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 5
1