Page No. : 1/7
AVANTICS - AX431 Series
Specification No.: 050308-FE0001
AX431 Series
Adjustable Shunt Regulator
Description
The AX431 series are three-terminal adjustable regulators with guarante-
ed thermal stability over applicable temperature ranges. The output
voltage may be set to any value between V
(approximately 2.495 volts)
and 36 volts with two external resistors. These devices have a typical
dynamic output impedance of 0.2
. Active output circuitry provides a very
sharp turn-on characteristic, making these devices excellent replacement
for zener diodes in many applications.
Features
Programmable output voltage
Temperature coefficient is 50ppm/
o
C typical
Temperature compensated for operation over full temperature range
Low output noise voltage
Fast turn on response
Ordering Information
Package
SOT-23
SOT-89
TO-92
SO-8
V
REF
: 2.495
±
2%
AX431AN
AX431AM
AX431AA
AX431AS
V
REF
: 2.495
±
1%
AX431BN
AX431BM
AX431BA
AX431BS
V
REF
: 2.495
±
0.5%
AX431CN
AX431CM
AX431CA
AX431CS
Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified)
Characteristics
Symbol
V
KA
I
K
I
REF
Value
36
-100~+150
0.05~+10
Unit
V
mA
mA
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current Range
SOT-23
SOT-89
TO-92
SO-8
280
770
770
770
Power Dissipation
P
D
mW
Operating Temperature Range
Storage Temperature Range
T
opr
T
stg
0~+70
-65~+150
o
C
o
C
Operating Conditions
Characteristics
Symbol
V
KA
I
K
Min.
V
REF
1
Max.
36
100
Unit
V
mA
Cathode Voltage
Cathode Current Range (Continuous)
AX431 Series Pin Assignment
3-Lead Plastic
SO-8
Package Code: S
Pin 1: Cathode
Pin 2/3/6/7: Anode
Pin 4/5: NC
Pin 8: Reference
5
1
23
4
6
7
8
3-Lead Plastic
SOT-89
Package Code: M
Pin 1: Reference
Pin 2: Anode
Pin 3: Cathode
3-Lead Plastic
SOT-23
Package Code: N
Pin 1: Reference
Pin 2: Cathode
Pin 3: Anode
12
3
3-Lead Plastic
TO-92
Package Code: A
Pin 1: Reference
Pin 2: Anode
Pin 3: Cathode
123
123