Philips TDA7057AQ Manual De Usuario

1998 Apr 07

5

Philips Semiconductors

Product specification

2

×

 8 W stereo BTL audio output amplifier

with DC volume control

TDA7057AQ

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

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.

V

P

supply voltage

−

18

V

I

ORM

repetitive peak output current

−

1.25

A

I

OSM

non-repetitive peak output current

−

1.5

A

P

tot

total power dissipation

T

case

< 60

°

C

−

22.5

W

T

amb

operating ambient temperature

−

40

+85

°

C

T

stg

storage temperature

−

55

+150

°

C

T

vj

virtual junction temperature

−

150

°

C

t

sc

short-circuit time

−

1

hr

V

n

input voltage pins 1, 3, 5 and 7

−

5

V

R

th j-c

thermal resistance from junction to case

4

K/W

R

th j-a

thermal resistance from junction to ambient in free air

40

K/W