# SM72480

Manufacturer Part NumberSM72480
ManufacturerTexas Instruments
SM72480 datasheet

## Specifications of SM72480

Pin/package6SON, 6USON, 6WSON
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
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V
, Analog Output Voltage, mV
TEMP
Die Temp.,
T
=
°C
TRIP
125 or 120°C
131
756
132
745
133
734
134
724
135
713
136
702
137
691
138
681
139
670
140
659
141
649
142
638
143
627
144
616
145
606
146
595
147
584
148
573
149
562
150
552
1.1 V
vs DIE TEMPERATURE APPROXIMATIONS
TEMP
The SM72480's V
analog temperature output is very lin-
TEMP
ear. The Conversion Table above and the equation in Section
1.1.1 represent the most accurate typical performance of the
V
voltage output vs Temperature.
TEMP
1.1.1 The Second-Order Equation (Parabolic)
The data from the Conversion Table, or the equation below,
when plotted, has an umbrella-shaped parabolic curve.
V
is in mV.
TEMP
T
= 105°C
TRIP
1.1.2 The First-Order Approximation (Linear)
567
For a quicker approximation, although less accurate than the
559
second-order, over the full operating temperature range the
551
linear formula below can be used. Using this formula, with the
constant and slope in the following set of equations, the best-
543
fit V
vs Die Temperature performance can be calculated
TEMP
535
with an approximation error less than 18 mV. V
527
519
511
503
495
1.1.3 First-Order Approximation (Linear) over Small
Temperature Range
487
For a linear approximation, a line can easily be calculated
479
over the desired temperature range from the Conversion Ta-
471
ble using the two-point equation:
463
455
447
438
430
Where V is in mV, T is in °C, T
422
the lowest temperature, T
414
highest temperature.
Using this method of linear approximation, the transfer func-
tion can be approximated for one or more temperature ranges
of interest.
11
is in mV.
TEMP
and V
are the coordinates of
1
1
and V
are the coordinates of the
2
2
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