PRECISION VOLTAGE REGULATORS
Description
µA723 PRECISION VOLTAGE REGULATORS
SLVS057D – AUGUST 1972 – REVISED JULY 1999
D 150-mA Load Current Without External
Power Transistor
D OR N PACKAGE (TOP VIEW)
D Adjustable Current-Limiting Capability D Input Voltages up to 40 V D Output Adjustable From 2 V to 37 V D Direct Replacement for Fairchild µA723C
NC 1 CURR LIM 2 CURR SENS 3
IN– 4
14 NC 13 FREQ COMP 12 VCC+ 11 VC
IN+ 5 10 OUTPUT
description
REF 6
9 VZ
The µA723 is a precision integrated-circuit
VCC– 7
8 NC
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.
functional block diagram
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
TA
PLASTIC DIP
SMALL OUTLINE
FORM (Y)
(N)
(D)
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.
VCC+
FREQ COMP
TemperatureCompensated Reference Diode
Current Source
Ref Amp
IN– REF
IN+
Error Amp
+ –
Current Limiter
VC Series Pass Transistor
Regulated Output
VCC–
CURR LIM CURR SENS
VZ
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.
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 nece...
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