TDA2611A 查看數據表（PDF） - Philips Electronics

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TDA2611A

5 W audio power amplifier

Philips Electronics 

Philips Semiconductors

5 W audio power amplifier

Product specification

TDA2611A

Fig.2 Power derating curves.

HEATSINK EXAMPLE

Assume VP = 18 V; RL = 8 Ω; Tamb = 60 °C maximum; Tj = 150 °C (max. for a 4 W application into an 8 Ω load, the

maximum dissipation is about 2,2 W).

The thermal resistance from junction to ambient can be expressed as:

Rth j-a = Rth j-tab + Rth tab-h + Rth h-a = -1---5---20---,--–-2----6---0-- = 41 K/W.

Since Rth j-tab = 11 K/W and Rth tab-h = 1 K/W, Rth h-a = 41 − (11 + 1) = 29 K/W.

November 1982

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