TDA7575B Datasheet TDA7575B, TDA7575BPDTR, TDA7575BPD | P1-P3

September 2013 Doc ID 14103 Rev 3 1/32

TDA7575B

2 x 75W multifunction dual-bridge power amplifier

with integrated digital diagnostics

Features

■ Multipower bcd technology

■ MOSFET output power stage

■ DMOS power output

■ New high-efficiency (class AB)

■ Single-channel 1driving capability

■ High output power capability 2x28 W/4  @

14.4 V, 1 kHz, 10 % THD

■ Max. output power 2x75 W/2 1x150 W/1 

■ Single-channel 1  driving capability

■ 84 W undistorted power

■ Full I

C bus driving with 4 address possibilities:

– Standby

–Play/mute

– Gain 12/26 dB

– Full digital diagnostic (AC and DC loads)

■ Possibility to disable the I

C bus

■ Differential inputs

■ Full fault protection

■ DC offset detection

■ Two independent short circuit protections

■ Diagnostic on clipping detector with selectable

threshold (2 % / 10 %)

■ Clipping detector as diagnostic pin when I

bus is disabled

■ Standby/mute pins

■ ESD protection

Description

The TDA7575B is a new MOSFET dual bridge

amplifier specially intended for car radio

applications. Thanks to the DMOS output stage

the TDA7575B has a very low distortion allowing

a clear powerful sound.

Among the features, its superior efficiency

performance coming from the internal exclusive

structure, makes it the most suitable device to

simplify the thermal management in high power

sets.The dissipated output power under average

listening condition is in fact reduced up to 50%

when compared to the level provided by

conventional class AB solutions.

This device is equipped with a full diagnostic array

that communicates the status of each speaker

through the I

C bus. The TDA7575B has also the

possibility of driving loads down to 1 paralleling

the outputs into a single channel. It is also

possible to disable the I

C and control the

TDA7575B by means of the usual standby and

mute pins.

PowerSO36

Flexiwatt27

(slug up)

Table 1. Device summary

Order code Package Packing

TDA7575B Flexiwatt27 Tube

TDA7575BPD PowerSO36 (slug up) Tube

TDA7575BPDTR PowerSO36 (slug up) Tape and reel

www.st.com

Contents TDA7575B

2/32 Doc ID 14103 Rev 3

Contents

1 Block and pins diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 I2C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.1 Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 Start and stop conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3 Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.5 1 W capability setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.6 I2C abilitation setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6 Software specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.1 Examples of bytes sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7 Diagnostics functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.1 Turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.2 Permanent diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.3 Output DC offset detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.4 AC diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.5 Multiple faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.6 Faults availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.7 I2C programming/reading sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

TDA7575B List of tables

Doc ID 14103 Rev 3 3/32

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 5. Address selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 6. IB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 7. IB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 8. DB1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 9. DB2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 10. Double fault table for turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 11. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P32

TDA7575B

Mfr. #:

Buy TDA7575B

Manufacturer:

STMicroelectronics

Description:

Audio Amplifiers 2 x 75W Multifunct Dual-Bridge Pwr Amp

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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TDA7575B

TDA7575B

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