ng80960kb-25 Intel Corporation, ng80960kb-25 Datasheet - Page 30

• Manufacturer Part Number: ng80960kb-25
• Description: Embedded 32-bit Microprocessor With Integrated Floating-point Unit
• Manufacturer: Intel Corporation

3.3.
The 80960KB is specified for operation when case
temperature is within the range 0°C to 85°C (PGA) or
0°C to 100°C (PQFP). Measure case temperature at
the top center of the package. Ambient temperature
can be calculated from:
T
T
T
Values for
Table 12 for the PGA package and in Table 12 for the
PQFP package. The PGA’s
adding a heatsink. For the PQFP, however, a heatsink
is not generally used since the device is intended to
be surface mounted.
A
J
C
(No Heatsink)
(Omnidirectional
Heatsink)
(Unidirectional
Heatsink)
NOTES:
1. This table applies to 80960KB PGA plugged into
2.
= T
= T
= T
Junction-to-Case
Case-to-Ambient
Case-to-Ambient
Case-to-Ambient
socket or soldered directly to board.
Parameter
C
J
JA
A
Package Thermal Specification
+ P*
+ P*
+ P*
=
JC
ja
+
ja
jc
and
ja
CA
jc
]
jc
for various airflows are given in
(0)
19
16
15
Thermal Resistance — °C/Wat t
2
0
Table 14. 80960KB PGA Package Thermal Characteristics
ja
(0.25)
18
15
14
50
2
can be reduced by
Airflow — ft./min (m/sec)
(0.50)
100
17
14
13
2
(1.01)
3.
200
15
12
11
2
80960KB
J-CAP
J-PIN
J-PIN
29
(2.03)
= 8°C/W (outer pins) (approx. )
= 4°C/W (inner pins) (approx.)
= 4°C/W (approx.)
400
12
Maximum
permitted without exceeding T
graphs in Figures 23, 24, 25 and 26. The curves
assume the maximum permitted supply current (I
at each speed, V
(PGA) or +100°C (PQFP) .
If the 80960KB is to be used in a harsh environment
where the ambient temperature may exceed the limits
for the normal commercial part, consider using an
extended temperature device. These components are
designated by the prefix “TA” and are available at 16,
20 and 25 MHz in the ceramic PGA package.
Extended operating temperature range is –40° C to
+125°C (case) .
Figure 26 shows the maximum allowable ambient
temperature for the 20 MHz extended temperature
TA80960KB at various airflows. The curve assumes
an I
+125°C .
2
9
8
CC
(3.04)
600
of 420 mA, V
10
2
7
6
allowable
(4.06)
800
CC
2
9
6
5
of +5.0 V and a T
CC
ambient
J-PIN
of 5.0 V and a T
C
JA
temperature
is shown by the
CASE
JC
of +85°C
CASE
J-CAP
(T
CC
A
of
)
)