TDA1011 Просмотр технического описания (PDF) - Philips Electronics

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TDA1011

2 to 6 W audio power amplifier

Philips Electronics 

Philips Semiconductors

2 to 6 W audio power amplifier

Product specification

TDA1011

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

Supply voltage

Peak output current

Total power dissipation

Storage temperature

Operating ambient temperature

A.C. short-circuit duration of load

during sine-wave drive; VP = 12 V

VP

max.

IOM

max.

see derating curve Fig.2

24 V

3A

Tstg

Tamb

−55 to + 150 °C

−25 to + 150 °C

tsc

max.

100 hours

Fig.2 Power derating curve.

HEATSINK DESIGN

Assume VP = 12 V; RL = 4 Ω; Tamb = 60 °C maximum; Po = 3,8 W.

The maximum sine-wave dissipation is 1,8 W.

The derating of 10 K/W of the package requires the following external heatsink (for sine-wave drive):

Rth j-a = Rth j-tab + Rth tab-h + Rth h-a = -1---5---10---,--–-8---6----0-- = 50 K/W.

Since Rth j-tab = 10 K/W and Rth tab-h = 1 K/W, Rth h-a = 50 − (10 + 1) = 39 K/W.

November 1982

4

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