July 1994

4

Philips Semiconductors

Product specification

1 W BTL mono audio amplifier

TDA7052

FUNCTIONAL DESCRIPTION

The TDA7052 is a mono output amplifier designed for battery-fed portable audio applications, such as tape recorders

and radios.

The gain is fixed internally at 40 dB. A large number of tape recorders and radios are still designed for mono sound, plus

a space-saving trend by reduction of the number of battery cells. This means a decrease in supply voltage which results

in an reduction of output power. To compensate for this reduction, the TDA7052 uses the Bridge-Tied-Load principle

(BTL) which can deliver an output power of 1,2 W (THD = 10%) into an 8

Ω load with a power supply of 6 V. The load

can be short-circuited at each signal excursion.

RATINGS

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

POWER DISSIPATION

The maximum sinewave dissipation is 0,9 W.

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

Supply voltage

−

18

V

Non-repetitive peak output current

−

1,5

A

Total power dissipation

see Fig. 2

Crystal temperature

−

150

°C

Storage temperature range

−55

+150

°C

Fig.2 Power derating curve.

R

th j-a

150

50

–

09

,

----------------------

110 K/W.

≈

=