CALCULATION AVERAGE TEMPERATURE COEFICIENT (TC)
ppm
%
mV
0
0
0
? V REF
? TC in mV / ° C =
? V REF (mV)
? T A
5000
0.5
-5
? T
? TC in % / ° C =
(
? V REF
? V REF at 25 ° C
? T A
)
x 100
0
15
30
45
60
75
90
105
? TC in ppm / ° C =
(
? V REF
? V REF at 25 ° C
? T A
)
x 10 6
Junction Temperature ( ° C)
0.0033mV / ° C
0.0027% / ° C
27ppm/ ° C
Figure 1. V REF VS Temperature.
TEST CIRCUITS
V IN
V KA = V REF
V IN
V KA
V IN
V KA
I K (OFF)
I REF
I K
R1
I REF
I K
(V REF )
R2
Figure 2. Test Circuit for V KA = V REF
Figure 3. Test Circuit for V KA > V REF
Figure 4. Test Circuit for I KOFF
Date: 12/ 11 /04
SPX432 1.24V Precision Adjustable Shunt Regulator
3
? Copyright 2004 Sipex Corporation
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