Datasheet
15
20
25
30
1 1.5 2 2.5 3 3.5 4 4.5 5
Copper Area – sq. Inches
THERMAL RESISTANCE
vs
COPPER AREA 2-LAYER PCB
35
1 2 3 4 5
15
20
25
30
35
Copper Area – sq. Inches
THERMAL RESISTANCE
vs
COPPER AREA 4-LAYER PCB
– Thermal Resistance –
JA
θ
C/W
°
– Thermal Resistance –
JA
θ
C/W
°
20
21
22
23
24
25
4 6 8 10 12 14 16
Thermal Via Quantity (13 Mil Diameter)
THERMAL RESISTANCE
vs
THERMAL VIA QUANTITY 2-LAYER PCB
– Thermal Resistance –
JA
θ
C/W
°
TPA3004D2
SLOS407E –FEBRUARY 2003–REVISED JANUARY 2011
www.ti.com
Figure 47. Thermal Resistance
Figure 48. Thermal Resistance
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Product Folder Link(s): TPA3004D2