isl28177 Intersil Corporation, isl28177 Datasheet - Page 8

• Manufacturer Part Number: isl28177
• Description: 40v General Purpose Precision Operational Amplifier
• Manufacturer: Intersil Corporation

Power Dissipation
It is possible to exceed the +150°C maximum junction
temperature under certain load and power supply conditions. It is
therefore important to calculate the maximum junction
temperature (T
supply voltages, load conditions, or package type need to be
modified to remain in the safe operating area. These parameters
are related using Equation 1:
where:
• PD
.
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T
JMAX
each amplifier in the package (PD
10/31/11
MAXTOTAL
DATE
=
T
MAX
ISL28177
JMAX
is the sum of the maximum power dissipation of
+
θ
JA
) for all applications to determine if power
xPD
FN7859.0
REVISION
Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted
MAXTOTAL
For information regarding Intersil Corporation and its products, see
8
Initial Release
MAX
in the quality certifications found at
http://rel.intersil.com/reports/search.php
)
For additional products, see
ISL28177
(EQ. 1)
www.intersil.com/askourstaff
www.intersil.com/product_tree
www.intersil.com/design/quality
• PD
where:
• T
• θ
• PD
• V
• I
• V
PD
qMAX
MAX
MAX
JA
S
OUTMAX
MAX
MAX
= Total supply voltage
= Thermal resistance of the package
= Maximum ambient temperature
=
= Maximum quiescent supply current of 1 amplifier
for each amplifier can be calculated using Equation 2:
= Maximum power dissipation of 1 amplifier
V
CHANGE
= Maximum output voltage swing of the application
S
×
I
qMAX
www.intersil.com
+
(
V
S
- V
OUTMAX
www.intersil.com/products
)
×
V
--------------------------- -
OUTMAX
R
L
October 31, 2011
FN7859.0
(EQ. 2)
for a