Philips Semiconductors
24 W BTL or 2 x 12 W stereo
car radio power amplifier
Product specification
TDA1515BQ
Fig.2 Power derating curves.
HEATSINK DESIGN EXAMPLE
The derating of 3 K/W of the encapsulation requires the following external heatsink (for sine-wave drive):
24 W BTL (4 Ω) or 2 × 12 W stereo (2 Ω)
maximum sine-wave dissipation: 12 W
Tamb = 65 °C maximum
Rth h-a = 1----5---0--1---2–-----6---5-- = –3 = 4 K/W
2 × 7 W stereo (4 Ω)
maximum sine-wave dissipation: 6 W
Tamb = 65 °C maximum
Rth h-a = 1----5---0---6--–-----6---5-- = –3 = 11 K/W
July 1994
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