ISSUED DATE :2003/05/15
REVISED DATE :2004/11/10B
GM431
Description
Adjustable Shunt Regulator
The GM431 series are three-terminal adjustable regulators with guaranteed thermal stability over applicable temperature ranges.
The output voltage may be set to any value between V
REF
(approximately 2.495v) and 36v with two external resistors.
It provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others.
Package Dimensions
SOT-89
REF.
A
B
C
D
E
F
Millimeter
Min.
Max.
4.4
4.6
4.05
4.25
1.50
1.70
1.30
1.50
2.40
2.60
0.89
1.20
REF.
G
H
I
J
K
L
M
Millimeter
Min.
Max.
3.00 REF.
1.50 REF.
0.40
0.52
1.40
1.60
0.35
0.41
5 q TYP.
0.70 REF.
Absolute Maximum Ratings at Ta = 25 :
Parameter
Junction Temperature
Storage Temperature
Cathode
Voltage
Cathode Current Range(Continuous)
Reference Input Current Range
Total Power Dissipation
Symbol
Tj
Tstg
V
KA
I
KA
I
REF
PD
Ratings
+150
-65 ~ +150
37
-100~+150
-0.05~+10
1.0
V
mA
mA
W
Unit
Characteristics
Parameter
Cathode Voltage
Cathode Current
Reference Input Voltage
at Ta = 25 :
Symbol
V
KA
I
KA
GM431C
GM431B
GM431A
V
REF
Min
V
REF
1
2.445
2.470
2.483
V
REF
/ T
V
REF
/ V
KA
I
REF
I
REF
/ T
I
KA
(min)
I
KA
(off)
‡
kA
Z
-
-
-
-
-
-
-
-
Typ.
-
-
2.495
2.495
2.495
4.5
-1.0
-0.5
1.5
0.4
0.45
0.05
0.15
Max.
36
100
2.545
2.520
2.507
17
-2.7
-2.0
4
1.2
1.0
1.0
0.5
mV
V
KA
=V
REF
,I
K
=10mA
Tmin Ta Tmax
V
KA
=10V~V
REF
V
KA
=36V~10V
V
V
KA
= V
REF
,I
K
=10mA
Unit
V
mA
Test Conditions
Deviation of reference Input Voltage
Over temperature(note)
Ratio of Change in Reference Input
Voltage to the Change in Cathode Voltage
Reference Input Current
Deviation of reference Input Current
Over Full Temperature Range
Minimum Cathode Current for Regulation
Off-State Cathode Current
Dynamic Impedance
Note: Tmin= 0 ,Tmax=+70
mV/V I
K
=10mA
uA
uA
mA
uA
I
K
=10mA,R1=10K ,R2=
I
K
=10mA,R1=10K ,R2=
T
A=Full Temperature
V
KA
=V
REF
V
KA
=36V,V
REF
=0
V
KA
=V
REF
,I
K
=1 to 100mA,F 1.0KHz
1/3
GTM [ GTM CORPORATION ]
