May 1992

5

Philips Semiconductors

Product specification

2 x 22 W BTL stereo car radio power

amplifier with speaker protection

TDA1557Q

LIMITING VALUES

In accordance with the Absolute maximum System (IEC 134).

THERMAL RESISTANCE

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

positive supply voltage

operating

−

18

V

non-operating

−

30

V

load dump protected; during

−

45

V

50 ms; rise time

≥ 2.5 ms

AC and DC short-circuit safe voltage

−

18

V

reverse polarity

−

6.0

V

energy handling capability at outputs

−

200

mJ

IOSM

non-repetitive peak output current

−

6A

IORM

repetitive peak output current

−

4A

total power dissipation

−

60

W

storage temperature range

−55

+150

°C

junction temperature

−+150

°C

SYMBOL

PARAMETER

THERMAL RESISTANCE

from virtual junction to ambient in free air

40 K/W

from virtual junction to case (see Fig.3)

1.5 K/W

Fig.3 Equivalent thermal resistance network.

handbook, halfpage

2.8

K/W

0.1

K/W

2.8

K/W

virtual

junction

output 1

output 2

case

MLA382