Tda8885

INTEGRATED CIRCUITS

DATA SHEET

TDA8588J; TDA8588xJ I2C-bus controlled 4 × 50 Watt power amplifier and multiple voltage regulator
Product specification 2004 Feb 24

Philips Semiconductors

Product specification

I2C-bus controlled 4 × 50 Watt power amplifier and multiple voltage regulator
FEATURES Amplifiers • I2C-bus control • Can drive a 2 Ω load with a battery voltage of up to 16 Vand 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 oracross the load • All pins protected from short-circuit to ground • Soft thermal-clipping to prevent audio holes • Low battery detection. APPLICATIONS 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 or5 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 (antennaswitch 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. 2004 Feb 24 2 PROTECTION

TDA8588J; TDA8588xJ

• If connection to the battery voltage is reversed, all regulator voltages will bezero • 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.

• Boost amplifier and voltage regulatorfor 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 bothrear 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-groundprotection • 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.

Philips Semiconductors

Product specification

I2C-bus controlled 4 × 50 Watt power amplifier and multiple voltage regulator
QUICK REFERENCE DATA SYMBOL Amplifiers VP1, VP2 Iq(tot) Po(max) operating supply voltage total quiescentcurrent maximum output power PARAMETER CONDITIONS

TDA8588J; TDA8588xJ

MIN.

TYP.

MAX. UNIT

8 − RL = 4 Ω; VP = 14.4 V; VIN = 2 V 44 RMS square wave RL = 4 Ω; VP = 15.2 V; VIN = 2 V 49 RMS square wave RL = 2 Ω; VP = 14.4 V; VIN = 2 V 83 RMS square wave

14.4 270 46 52 87 0.01 50 25

18 400 − − − 0.1 70 35

V mA W W W % µV µV

THD Vn(o)(amp) Vn(o)(LN)

total harmonic distortion...