TDA7564B STMicroelectronics

TDA7564B 4 x 50W multifunction quad power amplifier with built-in diagnostics feature Features Multipower BCD technology MOSFET output power stage DMOS power output New high efficiency (class SB) Flexiwatt25 Flexiwatt25 (Vertical) (Horizontal) High output power capability 4x28 W/4 14.4 V, 1 kHz, 10 % THD, 4x50 W max, power Max. output power 4x72 W/2 2 Full I C bus driving: Standby PowerSO36 Independent front/rear soft play/mute (slug up) Selectable gain (for low noise line output function) High efficiency enable/disable PowerSO36 package specially intended for car 2 I C bus digital diagnostics (including AC radio applications. and DC load detection) Thanks to the DMOS output stage the TDA7564B Full fault protection has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency DC offset detection performance coming from the internal exclusive Four independent short circuit protection structure, makes it the most suitable device to Clipping detector (2 %/10 %) simplify the thermal management in high power sets. Linear thermal shutdown with multiple thermal warning The dissipated output power under average ESD protection listening condition is in fact reduced up to 50% when compared to the level provided by conventional class AB solutions. This device is Description equipped with a full diagnostics array that The TDA7564B is a new BCD technology quad communicates the status of each speaker through 2 bridge type of car radio amplifier in Flexiwatt25 / the I C bus. Table 1. Device summary Order code Package Packing TDA7564B Flexiwatt25 (vertical) Tube TDA7564BH Flexiwatt25 (horizontal) Tube TDA7564BPD PowerSO36 Tube TDA7564BPDTR PowerSO36 Tape and reel September 2013 Doc ID 12734 Rev 4 1/34 www.st.com 1Contents TDA7564B Contents 1 Block diagrams and application circuit 6 2 Pins description 7 3 Electrical specifications 8 3.1 Absolute maximum ratings . 8 3.2 Thermal data . 8 3.3 Electrical characteristics . 8 3.4 Electrical characteristics curves 11 4 Diagnostics functional description 14 4.1 Turn-on diagnostic 14 4.2 Permanent diagnostics . 16 4.3 Output DC offset detection 17 4.4 AC diagnostic 17 5 Multiple faults . 19 5.1 Faults availability . 19 6 Thermal protection . 20 6.1 I2C programming/reading sequences . 20 7 Fast muting . 21 2 8I C bus interface . 22 8.1 Data validity . 22 8.2 Start and stop conditions . 22 8.3 Byte format 22 8.4 Acknowledge 22 9 Software specifications . 24 10 Examples of bytes sequence . 29 2/34 Doc ID 12734 Rev 4