Precision Adjustable
Shunt Reference
CORPORATION
TL431
FEATURES
DESCRIPTION
The TL431 is an adjustable shunt regulator designed to act as
an open-loop error amplifier with a 2.5V temperature
compensated reference. Its highly accurate 1% bandgap
reference is perfect for applications requiring stability and
accuracy over temperature and life.
Sharp turn-on characteristics and a low temperature coefficient
make the TL431 an excellent replacement for many zener
diode applications, programmable to any value greater than
2.5V and up to 36V by using two external resistors. As a
combination error amplifier and reference, it can be used to
manage control loops such as switching power supplies.
ORDERING INFORMATION
Part
TL431LP
TL431D
TL431S
Package
TO-92
8-Pin Plastc SOIC
SOT-89
Temperature Range
0 to 105
o
C
0 to 105
o
C
0 to 105
o
C
•
•
•
•
•
•
Trimmed 1% Bandgap Reference
Nominal Temperature Range Extended to 105
o
C
Temperature-Compensated: 30ppm/
o
C
Internal Amplifier with 150mA Capability
Low Output Noise
Low Frequency Dynamic Output Impedance
PIN CONFIGURATION
(Top View)
TO-92 (LP)
CATHODE
1
2
3
4
SOIC (D)
8
7
6
5
REFERENCE
SOT-89 (S)
CATHODE
CATHODE
ANODE
ANODE
ANODE
N/C
1G-34
ANODE
ANODE
N/C
ANODE
REFERENCE
1G-33
REFERENCE
1G-35
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CALOGIC [ CALOGIC, LLC ]
