LIMITING VALUES. Philips TDA7057AQ

Philips Semiconductors

2

×

8 W stereo BTL audio output amplifier with DC volume control

Product specification

TDA7057AQ

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

CONDITIONS SYMBOL

V

P

I

ORM

I

OSM

P tot

T amb

T stg

T vj t sc

V n

PARAMETER supply voltage repetitive peak output current non-repetitive peak output current total power dissipation operating ambient temperature storage temperature virtual junction temperature short-circuit time input voltage pins 1, 3, 5 and 7

T case

< 60

°

C

MIN.

−

−

−

55

−

−

−

−

−

−

40

THERMAL CHARACTERISTICS

SYMBOL

R th j-c

R th j-a

PARAMETER thermal resistance from junction to case thermal resistance from junction to ambient in free air

VALUE

Power dissipation

Assume V

P

= 12 V and R

L

= 16

Ω

. The maximum sine wave dissipation is 2

×

1.8 W = 3.6 W.

At T amb(max)

= 60

°

C:

R th tot

= (150

−

60)/3.6 = 25 K/W.

R th tot

= R th j-c

+ R th c-hs

+ R th hs

.

R th c-hs

+ R th hs

= 25

−

4 = 21 K/W.

4

40

MAX.

18

1.25

1.5

22.5

+85

+150

150

1

5

V

A

A

W

°

C

°

C

°

C hr

V

UNIT

UNIT

K/W

K/W

1998 Apr 07 5