TDA8588J datasheet(2/54 Pages) PHILIPS

2 / 54 page

2004 Feb 24

Philips Semiconductors

Product speciﬁcation

I2C-bus controlled 4

× 50 Watt power

ampliﬁer and multiple voltage regulator

TDA8588J; TDA8588xJ

FEATURES

Ampliﬁers

• I2C-bus control

• Can drive a 2 Ω load with a battery voltage of up to 16 V

and a 4

Ω load with a battery voltage of up to 18 V

• DC load detection, open, short and present

• AC load (tweeter) detection

• Programmable clip detect; 1 % or 4 %

• Programmable thermal protection pre-warning

• Independent short-circuit protection per channel

• Low gain line driver mode (20 dB)

• Loss-of-ground and open VP safe

• All outputs protected from short-circuit to ground, to VP

or across the load

• All pins protected from short-circuit to ground

• Soft thermal-clipping to prevent audio holes

• Low battery detection.

Voltage regulators

GENERAL

• I2C-bus control

• Good stability for any regulator with almost any output

capacitor value

• Five voltage regulators (microcontroller, display,

mechanical digital, mechanical drive and audio)

• Choice of non-adjustable 3.3 or 5 V microcontroller

supply (REG2) versions reducing risk of overvoltage

damage

• Choice of non-adjustable 3.3 or 5 V digital signal

processor supply (REG3) versions reducing risk of

overvoltage damage

• Selectable output voltages for regulators 1, 4 and 5

• Low dropout voltage PNP output stages

• High supply voltage ripple rejection

• Low noise for all regulators

• Two power switches (antenna switch and amplifier

switch)

• Regulator 2 (microcontroller supply) operational during

load-dump and thermal shut-down

• Low quiescent current (only regulator 2 is operational)

• Reset output (push-pull output stage)

• Adjustable reset delay time

• Backup functionality.

PROTECTION

• If connection to the battery voltage is reversed, all

regulator voltages will be zero

• Able to withstand voltages at the output of up to 18 V

(supply line may be short-circuited)

• Thermal protection to avoid thermal breakdown

• Load-dump protection

• Regulator outputs protected from DC short-circuit to

ground or to supply voltage

• All regulators protected by foldback current limiting

• Power switches protected from loss-of-ground.

APPLICATIONS

• Boost amplifier and voltage regulator for car radios and

CD/MD players.

GENERAL DESCRIPTION

Ampliﬁers

The TDA8588 has a complementary quad audio power

amplifier that uses BCDMOS technology. It contains four

amplifiers configured in Bridge Tied Load (BTL) to drive

speakers for front and rear left and right channels. The

I2C-bus allows diagnostic information of each amplifier and

its speaker to be read separately. Both front and both rear

channel amplifiers can be configured independently in line

driver mode with a gain of 20 dB (differential output).

Voltage regulators

The TDA8588 has a multiple output voltage regulator with

two power switches.

The voltage regulator contains the following:

• Four switchable regulators and one permanently active

regulator (microcontroller supply)

• Two power switches with loss-of-ground protection

• A reset output that can be used to communicate with a

microcontroller.

The quiescent current has a very low level of 150

µA with

only regulator 2 active.

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