IGLOO DC and Switching Characteristics
Package Thermal Characteristics
The device junction-to-case thermal resistivity is jc and the junction-to-ambient air thermal resistivity is
ja. The thermal characteristics for ja are shown for two air flow rates. The absolute maximum junction
temperature is 100°C. EQ 2 shows a sample calculation of the absolute maximum power dissipation
allowed for the AGL1000-FG484 package at commercial temperature and in still air.
Maximum Power Allowed = M-----a----x---.---j--u---n---c---t--i-o----n-----t-e----m-----p---.-----(----j-Ca---(-)----–C----M-/-W---a---)-x---.---a---m-----b----i-e---n----t---t--e---m-----p---.----(-----C----)- = 1----0--2-0---3---.-C-3---°-–--C---7-/--W0-------C-- = 1.28 W
EQ 2
Table 2-5 • Package Thermal Resistivities
Package Type
Quad Flat No Lead (QN)
Device Pin Count
jc
AGL030
132
13.1
ja
Still Air 1 m/s 2.5 m/s Unit
21.4
16.8
15.3 C/W
AGL060
132
11.0
21.2
16.6
15.0 C/W
AGL125
132
9.2
21.1
16.5
14.9 C/W
AGL250
132
8.9
21.0
16.4
14.8 C/W
AGL030
68
13.4
68.4
45.8
43.1 C/W
Very Thin Quad Flat Pack (VQ)*
100
Chip Scale Package (CS)
AGL1000
281
10.0
35.3
29.4
27.1 C/W
6.0
28.0
22.8
21.5 C/W
AGL400
196
7.2
37.1
31.1
28.9 C/W
AGL250
196
7.6
38.3
32.2
30.0 C/W
AGL125
196
8.0
39.5
33.4
31.1 C/W
AGL030
81
12.4
32.8
28.5
27.2 C/W
AGL060
81
11.1
28.8
24.8
23.5 C/W
AGL250
81
10.4
26.9
22.3
20.9 C/W
Micro Chip Scale Package (UC)
AGL030
81
16.9
40.6
35.2
33.7 C/W
Fine Pitch Ball Grid Array (FG)
AGL060
144
18.6
55.2
49.4
47.2 C/W
AGL1000
144
6.3
31.6
26.2
24.2 C/W
AGL400
144
6.8
37.6
31.2
29.0 C/W
AGL250
256
12.0
38.6
34.7
33.0 C/W
AGL1000
256
6.6
28.1
24.4
22.7 C/W
AGL1000
484
8.0
23.3
19.0
16.7 C/W
Note: *Thermal resistances for other device-package combinations will be posted in a later revision.
Disclaimer:
The simulation for determining the junction-to-air thermal resistance is based on JEDEC standards
(JESD51) and assumptions made in building the model. Junction-to-case is based on SEMI G38-88.
JESD51 is only used for comparing one package to another package, provided the two tests uses the
same condition. They have little relevance in actual application and therefore should be used with a
degree of caution.
2-6
Revision 23