TDA7575B STMicroelectronics

TDA7575B 2 x 75W multifunction dual-bridge power amplifier with integrated digital diagnostics Features Multipower bcd technology MOSFET output power stage DMOS power output PowerSO36 New high-efficiency (class AB) Flexiwatt27 (slug up) Single-channel 1 driving capability High output power capability 2x28 W/4 14.4 V, 1 kHz, 10 % THD Description Max. output power 2x75 W/2 1x150 W/1 The TDA7575B is a new MOSFET dual bridge Single-channel 1 driving capability amplifier specially intended for car radio 84 W undistorted power applications. Thanks to the DMOS output stage 2 Full I C bus driving with 4 address possibilities: the TDA7575B has a very low distortion allowing a clear powerful sound. Standby Play/mute Among the features, its superior efficiency Gain 12/26 dB performance coming from the internal exclusive structure, makes it the most suitable device to Full digital diagnostic (AC and DC loads) simplify the thermal management in high power 2 Possibility to disable the I C bus sets.The dissipated output power under average Differential inputs listening condition is in fact reduced up to 50% when compared to the level provided by Full fault protection conventional class AB solutions. DC offset detection This device is equipped with a full diagnostic array Two independent short circuit protections that communicates the status of each speaker Diagnostic on clipping detector with selectable 2 through the I C bus. The TDA7575B has also the threshold (2 % / 10 %) possibility of driving loads down to 1 paralleling 2 Clipping detector as diagnostic pin when I C the outputs into a single channel. It is also 2 bus is disabled possible to disable the I C and control the TDA7575B by means of the usual standby and Standby/mute pins mute pins. ESD protection Table 1. Device summary Order code Package Packing TDA7575B Flexiwatt27 Tube TDA7575BPD PowerSO36 (slug up) Tube TDA7575BPDTR PowerSO36 (slug up) Tape and reel September 2013 Doc ID 14103 Rev 3 1/32 www.st.com 1Contents TDA7575B 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 2/32 Doc ID 14103 Rev 3