TDA1521/N5 データシートの表示（PDF） - Philips Electronics
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TDA1521/N5 Datasheet PDF : 14 Pages
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Philips Semiconductors
2 x 12 W hi-fi audio power amplifier
Product specification
TDA1521
TDA1521Q
Fig.2 Power derating curve.
THERMAL RESISTANCE
From junction to case
Rth j-c = 2,5 K/W
HEATSINK DESIGN EXAMPLE
With derating of 2,5 K/W, the value of heatsink thermal resistance is calculated as follows:
given RL = 8 Ω and VP = ±16 V, the measured maximum dissipation is 14,6 W; then, for a maximum ambient temperature
of 65 °C, the required thermal resistance of the heatsink is
Rth h – a = 1----5-1--0--4---–,---6--6---5-- – 2,5= 3,3 K ⁄ W
Note: The internal metal block (heatsink) has the same potential as pin 5 (−VP).
July 1994
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