A3PN030-ZQNG68I Actel, A3PN030-ZQNG68I Datasheet - Page 19

• Manufacturer Part Number: A3PN030-ZQNG68I
• Manufacturer: Actel

Table 2-5 •
Table 2-6 •
Package Type
Quad Flat No Lead (QFN)
Very Thin Quad Flat Pack (VQFP)
Array Voltage V
1.425
1.500
1.575
Maximum Power Allowed
Thermal Characteristics
Introduction
The temperature variable in the Actel Designer software refers to the junction temperature, not
the ambient temperature. This is an important distinction because dynamic and static power
consumption cause the chip junction to be higher than the ambient temperature.
EQ 2-1
where:
T
ΔT = Temperature gradient between junction (silicon) and ambient ΔT = θ
θ
P = Power dissipation
Package Thermal Characteristics
The device junction-to-case thermal resistivity is θ
resistivity is θ
maximum junction temperature is 100°C.
maximum power dissipation allowed for a 484-pin FBGA package at commercial temperature and
in still air.
Temperature and Voltage Derating Factors
Package Thermal Resistivities
Temperature and Voltage Derating Factors for Timing Delays
(normalized to T
A
ja
= Ambient Temperature
= Junction-to-ambient of the package. θ
T
CC
J
= Junction Temperature = ΔT + T
(V)
can be used to calculate junction temperature.
ja
=
. The thermal characteristics for θ
Max. junction temp. (°C) Max. ambient temp. (°C)
-------------------------------------------------------------------------------------------------------------------------------------- -
J
–40°C
0.968
0.888
0.836
= 70°C, V
All devices
All devices
Device
CC
= 1.425 V)
–20°C
0.973
0.894
0.841
A
θ
A dv a n c e v 0. 2
ja
Pin Count
(°C/W)
–
100
100
48
68
0.979
0.899
0.845
ja
0°C
Junction Temperature (°C)
EQ 2-2
numbers are located in
ja
TBD
TBD
TBD
10.0
θ
are shown for two air flow rates. The absolute
jc
shows a sample calculation of the absolute
jc
0.991
0.910
0.856
25°C
ProASIC3 nano DC and Switching Characteristics
and the junction-to-ambient air thermal
Still Air 200 ft./min. 500 ft./min.
TBD
TBD
TBD
35.3
=
1.000
0.919
0.864
70°C
100°C 70°C
------------------------------------
Table
29.4
TBD
TBD
TBD
20.5°C/W
θ
ja
ja
–
2-5.
* P
1.006
0.924
0.870
85°C
=
27.1
TBD
TBD
TBD
1.463 W
110°C
1.013
0.930
0.875
·
EQ 2-1
EQ 2-2
Units
C/W
C/W
C/W
C/W
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