Philips Semiconductors
Product specification
Precision voltage regulator
µA723/723C
DESCRIPTION
The
µA723/µA723C
is a monolithic precision voltage regulator
capable of operation in positive or negative supplies as a series,
shunt, switching, or floating regulator. The 723 contains a
temperature-compensated reference amplifier, error amplifier, series
pass transistor, and current limiter, with access to remote shutdown.
PIN CONFIGURATION
D,F, N Packages
NC
1
CURRENT LIMIT
2
CURRENT SENSE
3
INVERTING INPUT
4
14
NC
13
FREQUENCY COMPENS.
12
V+
11
V
C
10
V
OUT
9
8
V
Z
NC
FEATURES
NON-INVERTING INPUT
5
V
REF
6
V–
7
•
Positive or negative supply operation
•
Series, shunt, switching, or floating operation
•
0.01% line and load regulation
•
Output voltage adjustable from 2V to 37V
•
Output current to 150mA without external pass transistor
•
µA723
MIL-STD-883A, B, C available
ORDERING INFORMATION
DESCRIPTION
14-Pin Ceramic Dual In-Line Package (CERDIP)
14-Pin Plastic Dual In-Line Package (DIP)
14-Pin Plastic Small Outline (SO) Package
SL00503
Figure 1. Pin Configuration
TEMPERATURE RANGE
-55°C to 125°C
0 to 70°C
0 to 70°C
ORDER CODE
µA723F
µA723CN
µA723CD
DWG #
0581B
SOT27-1
SOT108-1
EQUIVALENT CIRCUIT
FREQUENCY
COMPENSATION
12
V+
V
IN
13
11
V
C
TEMPERATURE
COMPENSATED
ZENER
V
REF
8
INVERTING
INPUT
4
ERROR AMP
SERIES PASS
TRANSISTOR
–
+
10
V
OUT
NON INVERTING
INPUT
VOLTAGE
REFERENCE
AMPLIFIER
7
V–
2
CURRENT
LIMIT
3 CURRENT
SENSE
9
V
Z
SL00504
Figure 2. Equivalent Circuit
1994 Aug 31
1
853-1063 13721