DONGGUAN NANJING ELECTRONICS .
AZ431
Adjustable Accurate Reference Source
The
AZ431
is a three-terminal a djustable shunt regulator offering
excellent temperature stability . This device has a typical dynamic output
impedance of 0.2 . The device can be used as a replacement for zener
diodes in many applications.
1. REFERENCE
2. CATHODE
3. ANODE
The output voltage can be adjusted to 36V
Low dynamic output impedance, its typical value is 0.2
Trapping current capability is 1 to 100mA
Low output noise voltage
Fast on -state response
The effective temperature compensation in the working range of full temperature
The typical value of the equivalent temperature factor in the whole temperature scope is 50 ppm/
Shunt Regulator
High-Current Shunt Regulator
Precision Current Limiter
Cathode Voltage
Cathode Current Range (Continuous)
Reference lnput Current Range
Power Dissipation
Thermal Resistance from Junction
Operating
Junction Temperature
Operating
Ambient Temperature Range
Storage temperature Range
V
KA
I
KA
Iref
P
D
R
T
j
T
Tstg
JA
37
-100~+150
0.05~+10
300
V
mA
mA
mW
/W
150
0~
70
-65~+150
AZ431
Parameter
Reference nput oltage (Fig.1)
Deviation of reference input oltage
ver temperature (note) (Fig.1)
Ratio f hange in eference nput
oltage to the change in athode
oltage (Fig.2)
Reference nput urrent (Fig.2)
Deviation Of eference nput urrent
ver ull emperature ange (Fig.2)
Minimum cathode current for
egulation (Fig.1)
Off-state cathode Current (Fig.3)
Dynamic mpedance
note: T
MIN
=0
,T
MAX
=+70
l
ref
V
ref
/
V
KA
I
KA
=10mA
Symbol
V
ref
V
ref
/ T
Test
condition
Min
2.450
Typ
2.5
4.5
-1.0
-0.5
1.5
Max
2.550
17
-2.7
-2.0
4
Unit
V
mV
mV/V
mV/V
A
V
KA
=V
REF
, I
KA
=10mA
V
KA
=V
REF
, I
KA
=10mA
T
min
T
a
T
max
V
KA
=10V~V
REF
V
KA
=36V~ 10V
I
KA
= 10mA,R
1
=10
R
2
=
l
KA
=10mA, R
1
=10
l
ref
/ T
R
2
=
T
a
=full Temperature
I
KA(min)
I
KA(OFF)
Z
KA
V
KA
=V
REF
V
KA
=36V,V
REF
=0
V
KA
=V
REF,
l
KA
=1 to 100mA
f 1.0 Hz
0.45
0.05
0.15
1.0
1.0
0.5
mA
A
0.4
1.2
A
0.4
2.49-2.51
2.487-2.513
AZ431
0
(mV)
I
K
=10mA
T
a
=25
-4
V
ref
, REFERENCE INPUT VOLTAGE
-8
-12
-16
-20
0
5
10
15
20
25
30
35
40
V
KA
, CATHODE VOLTAGE
(V)
Test Circuit for V
KA
=V
ref
(1+R1/R2)+R1*I
ref
700
(nA)
I
ref
, REFERENCE INPUT CURRENT
600
500
400
300
200
100
I
K
=10mA
R
1
=10K
-20
0
20
40
60
80
100
0
-40
Test Circuit for I
ref
T
a
, AMBIENT TEMPERATURE
(
)
50
(nA)
I
off
, OFF-STATE CATHODE CURRENT
45
40
35
30
25
20
15
10
5
0
-40
V
KA
=36V
V
ref
=0V
-20
0
20
40
60
80
100
Test Circuit for I
off
T
a
, AMBIENT TEMPERATURE
(
)
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