TDA8588J datasheet(13/54 Pages) PHILIPS

13 / 54 page

2004 Feb 24

Philips Semiconductors

Product speciﬁcation

I2C-bus controlled 4

× 50 Watt power

ampliﬁer and multiple voltage regulator

TDA8588J; TDA8588xJ

Protection

All regulator and switch outputs are fully protected by

foldback current limiting against load dumps and

short-circuits; see Fig.6. During a load dump all regulator

outputs, except the output of regulator 2, will go low.

The power switches can withstand ‘loss-of-ground’. This

means that if pin GND becomes disconnected, the switch

is protected by automatically connecting its outputs to

ground.

Temperature protection

If the junction temperature of a regulator becomes too

high, the amplifier(s) are switched off to prevent unwanted

noise signals being audible. A regulator junction

temperature that is too high is indicated by pin DIAG going

LOW and is also indicated by setting bit D6 in data byte 2.

If the junction temperature of the regulator continues to

rise and reaches the maximum temperature protection

level, all regulators and switches will be disabled except

regulator 2.

handbook, full pagewidth

VO(REGn)

Isc

Ilimit

IO(REGn)

MDB513

Fig.6 Foldback current protection.

TDA8588J Datasheet(PDF) 13 Page - NXP Semiconductors