tda1521q NXP Semiconductors, tda1521q Datasheet - Page 5

• Manufacturer Part Number: tda1521q
• Description: 2 X 12 W Hi-fi Audio Power Amplifier
• Manufacturer: NXP Semiconductors

Philips Semiconductors
THERMAL RESISTANCE
HEATSINK DESIGN EXAMPLE
With derating of 2,5 K/W, the value of heatsink thermal resistance is calculated as follows:
given R
of 65 C, the required thermal resistance of the heatsink is
Note: The internal metal block (heatsink) has the same potential as pin 5 ( V
July 1994
R
From junction to case
th h a
2 x 12 W hi-fi audio power amplifier
–
L
= 8
=
150 65
--------------------- - 2 5
14 6
and V
–
P
–
= 16 V, the measured maximum dissipation is 14,6 W; then, for a maximum ambient temperature
,
=
3 3 K W
,
Fig.2 Power derating curve.
R
th j-c
= 2,5 K/W
5
P
).
Product specification
TDA1521Q
TDA1521