Thermal resistance – Philips TDA7052AT User Manual
Page 5
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July 1994
5
Philips Semiconductors
Product specification
1 W BTL mono audio amplifier with DC
volume control
TDA7052A/AT
THERMAL RESISTANCE
Notes to the thermal resistance
TDA7052A: V
P
= 6 V; R
L
= 8
Ω
. The maximum sine-wave dissipation is 0.9 W.
Therefore T
amb(max)
= 150
−
100
×
0.9 = 60
°
C.
TDA7052AT: V
P
= 6 V; R
L
= 16
Ω
. The maximum sine-wave dissipation is 0.46 W.
Therefore T
amb(max)
= 150
−
155
×
0.46 = 78
°
C.
SYMBOL
PARAMETER
THERMAL RESISTANCE
R
th j-a
from junction to ambient in free air
TDA7052A
100 K/W
TDA7052AT
155 K/W
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