2
Rev. 08/13/02 SPX1431 Precision Adjustable Shunt Regulator
Copyright 2002 Sipex Corporation
ABSOLUTE MAXIMUM RATINGS
Cathode-Anode Reverse Breakdown V
....................................... 37V
Anode-Cathode Forward Current, (<10ms) I
................................. 1A
Operating Cathode Current I
.................................................. 150mA
Reference Input Current I
........................................................ 10mA
Continuous Power Dissipation at 25
°
C P
TO-92 ..................................................................... 775mW
SOT-23 .................................................................. 200 mW
SOIC-8 .................................................................... 750mW
SOT-89 ................................................................. 1000mW
Junction Temperature T
J
...........................................................150
°
C
Storage Temperature T
.............................................. -65 to 150
°
C
Lead Temperature (Soldering 10 sec.) T
L
..................................300
°
C
NOTE:
Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect reliability.
TYPICAL THERMAL RESISTANCES
PACKAGE
TO-92
SOT-23
SOIC-8
SOT-89
Typical deratings of the thermal resistances are given for ambient
temperature >25
°
C.
0
JA
0
JC
TYPICAL DERATING
6.3 mW/
°
C
1.7 mW/
°
C
5.7 mW/
°
C
9.1mW/C
°
160
°
C/W 80
°
C/W
575
°
C/W 150
°
C/W
175
°
C/W 45
°
C/W
110
°
C/W
8
°
C/W
ELECTRICAL CHARACTERISTICS
Electrical characteristics at 25
°
C I
K
= 10mA V
K
= V
REF
, unless otherwise specified.
PARAMETER
SPX1431
Reference Voltage
SYMBOL
FIGURE
CONDITIONS
MIN
TYP
MAX
UNITS
V
REF
2
2
2
3
2.490
2.465
2.500
2.510
2.535
0.20
V
V
T
J
= 0
°
C to 105
°
C
V
REF
withTemp.*
Ratio of Change in V
REF
to Cathode Voltage
Reference Input Current
I
REF
Temp Deviation
Min I
K
for Regulation
Off State Leakage
TC
0.07
-1.1
mV/
°
C
mV/V
V
REF
V
K
I
REF
I
REF
I
K(MIN)
I
K(OFF)
V
k
= 3V to 36V
-2.0
3
3
2
4
0.7
0.4
0.4
0.04
1.9
1.2
1
250
μ
A
μ
A
mA
nA
T
J
= 0
°
C to 105
°
C
V
REF
= 0V,
V
KA
= 36V
z
≤
1kHz
I
K
= 1 to 150mA
Dynamic Output
Impedance
Operating Range (T
) = - 55
°
C to 125
°
C.
* See appropiate test circuit (Figure 2)
Z
KA
2
0.15
0.5
RECOMMENDED CONDITIONS
PARAMETER
Cathode Voltage
Cathode Current
SYMBOL
V
KA
I
K
RATING
V
REF
to 36
10
UNIT
V
mA