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STMicroelectronics Electronic Components Datasheet

TDA7575B Datasheet

2 x 75W multifunction dual-bridge power amplifier

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TDA7575B
2 x 75W multifunction dual-bridge power amplifier
with integrated digital diagnostics
Features
Multipower bcd technology
www.DataSheet4U.comMOSFET output power stage
DMOS power output
New Hi-efficiency (class AB)
Single-channel 1Ω driving capability
High output power capability 2x28W/4Ω @
14.4V, 1KHz, 10% THD
Max. output power 2x75W/2Ω, 1x150W/1Ω
Single-channel 1Ω driving capability
– 84W undistorted power
– Full I2C bus driving with 4 address
possibilities:
- St-by
- Play/mute
- Gain 12/26dB
- Full digital diagnostic (AC and DC loads)
Possibility to disable the I2C 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 I2C
bus is disabled
St-by/mute pins
ESD protection
PowerSO36 (Slug up)
Flexiwatt 27
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 I2C bus. The TDA7575B has also the
possibility of driving loads down to 1Ω paralleling
the outputs into a single channel. It is also
possible to disable the I2C and control the
TDA7575B by means of the usual ST-BY and
MUTE pins.
Table 1. Device summary
Order code
Package
Packing
TDA7575B
TDA7575BPD
TDA7575BPDTR
Flexiwatt 27
PowerSSO36 (slug up)
PowerSSO36 (slug up)
Tube
Tube
Tape and reel
October 2007
Rev 1
1/32
www.st.com
1


STMicroelectronics Electronic Components Datasheet

TDA7575B Datasheet

2 x 75W multifunction dual-bridge power amplifier

No Preview Available !

Contents
Contents
TDA7575B
1
2
www.DataSheet4U.com
3
4
5
6
7
8
9
Block and pins diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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 1W capability setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.6 I2C abilitation setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Software specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 Examples of bytes sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2/32


Part Number TDA7575B
Description 2 x 75W multifunction dual-bridge power amplifier
Maker STMicroelectronics
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TDA7575B Datasheet PDF






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