µA723
PRECISION VOLTAGE REGULATORS
SLVS057D – AUGUST 1972 – REVISED JULY 1999
D OR N PACKAGE
(TOP VIEW)
150-mA Load Current Without External
Power Transistor
Adjustable Current-Limiting Capability
Input Voltages up to 40 V
NC
CURR LIM
CURR SENS
IN–
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
FREQ COMP
Output Adjustable From 2 V to 37 V
Direct Replacement for Fairchild µA723C
V
CC+
V
C
OUTPUT
IN+
description
REF
V
Z
NC
8
V
CC–
The µA723 is a precision integrated-circuit
voltage regulator, featuring high ripple rejection,
excellent input and load regulation, excellent temperature stability, and low standby current. The circuit consists
of a temperature-compensated reference-voltage amplifier, an error amplifier, a 150-mA output transistor, and
an adjustable-output current limiter.
The µA723 is designed for use in positive or negative power supplies as a series, shunt, switching, or floating
regulator. For output currents exceeding 150 mA, additional pass elements can be connected as shown in
Figures 4 and 5.
The µA723C is characterized for operation from 0°C to 70°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
PLASTIC
DIP
SMALL
OUTLINE
(D)
FORM
(Y)
T
A
(N)
0°C to 70°C µA723CN
µA723CD
µA723Y
The D package is available taped and reeled. Add the suffix
R to the device type (e.g., µA723CDR). Chip forms are
tested at 25°C.
functional block diagram
V
CC+
FREQ COMP
Temperature-
Compensated
Reference Diode
V
C
–
Series Pass
Transistor
IN–
IN+
Error
Ref
Amp
REF
Amp
+
Current
Source
Regulated
Output
Current
Limiter
V
CC–
CURR LIM CURR SENS
V
Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265