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TDA8589AJ

I2C-bus controlled4 45Watt power amplifier and multiple voltage regulator

Philips Electronics 

Philips Semiconductors

I2C-bus controlled 4 45 Watt power

amplier and multiple voltage regulator

Product specication

TDA8589J; TDA8589xJ

FEATURES

Ampliers

I2C-bus control

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

and a 4 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 3%

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 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

Ampliers

The TDA8589 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 TDA8589 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 A with

only regulator 2 active.

2004 Feb 24

2

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