Document
TDA7388
4 x 45 W quad bridge car radio amplifier
Datasheet - production data
Low external component count: – Internally fixed gain (26 dB) – No external compensation – No bootstrap capacitors
'!0'03
Flexiwatt25
Features
High output power capability: – 4 x 45 W / 4 max. – 4 x 26 W / 4 @ 14.4 V, 1 kHz, 10 %
Low distortion Low output noise Standby function Mute function Automute at min. supply voltage detection
Protections:
Output short circuit to gnd, to VS, across the load
Very inductive loads Overrating chip temperature with soft thermal
limiter Load dump voltage Fortuitous open GND Reversed battery ESD
Description
The TDA7388 is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed for high end car radio applications.
Based on a fully complementary PNP/NPN configuration, the TDA7388 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.
Order code TDA7388
Table 1. Device summary Package Flexiwatt25
Packing Tube
September 2013
This is information on a product in full production.
DocID14256 Rev 6
1/13
www.st.com
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Contents
Contents
TDA7388
1 Pin connection and test/application diagrams . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2/13 DocID14256 Rev 6
TDA7388
List of tables
List of tables
Table 1. Table 2. Table 3. Table 4. Table 5.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DocID14256 Rev 6
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List of figures
List of figures
TDA7388
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13.
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Standard test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Output power vs. supply voltage (4 Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Distortion vs. output power (4 Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Distortion vs. frequency (4 Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Output noise vs. source resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Total power disipation & efficiency (4 Ohm, sine). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power dissipation vs. average output power (4 Ohm, audio program simulation) . . . . . . . . 9 ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . . 9 Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . .