TDA7386
4 x 45W quad bridge car radio amplifier
Features
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High output power capability:
4 x 45W/4Ω max.
4 x 28W/4Ω @ 14.4V, 1KHz, 10%
4 x 24W/4Ω @ 13.2V, 1KHz, 10%
Low distortion
Low output noise
St-by function
Mute function
Automute at min. supply voltage detection
Low external component count:
– Internally fixed gain (26dB)
– No external compensation
– No bootstrap capacitors
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Flexiwatt25
Load dump voltage
Fortuitous open GND
Reversed battery
ESD
Description
The TDA7386 is a new technology class AB audio
power amplifier in Flexiwatt 25 package designed
for high end car radio applications.
Thanks to the fully complementary PNP/NPN
output configuration the TDA7386 allows a rail to
rail output voltage swing with no need of bootstrap
capacitors. The extremely reduced components
count allows very compact sets.
Protections
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Output short circuit to GND, to V
S
, across the
load
Very inductive loads
Overrating chip temperature with soft thermal
limiter
Device summary
Order code
TDA7386
Table 1.
Package
Flexiwatt25
Packing
Tube
December 2007
Rev 2
1/14
www.st.com
1
Contents
TDA7386
Contents
1
2
Block and pins connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
2.2
2.3
2.4
2.5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Printed circuit board and component layout . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1
3.2
3.3
SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Stand-by and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4
5
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2/14
TDA7386
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3/14
List of figures
TDA7386
List of figures
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.
Figure 14.
Figure 15.
Figure 16.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pins connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Standard test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Components and top copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Bottom copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Quiescent output voltage vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Max. output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Supply voltage rejection vs. freq. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4/14
TDA7386
Block and pins connection diagram
1
Block and pins connection diagram
Figure 1.
Block diagram
Vcc1
Vcc2
2200µF
ST-BY
N.C.
OUT1+
IN1
0.1µF
OUT1-
PW-GND
OUT2+
IN2
0.1µF
OUT2-
PW-GND
OUT3+
IN3
0.1µF
OUT3-
PW-GND
OUT4+
IN4
0.1µF
AC-GND
0.47µF
SVR
47µF
D99AU1018A
100nF
MUTE
OUT4-
PW-GND
TAB
S-GND
Figure 2.
Pins connection (top view)
1
25
P-GND2
OUT2-
ST-BY
OUT2+
P-GND1
IN1
IN2
IN4
IN3
AC-GND
P-GND3
OUT1-
OUT1+
SVR
S-GND
OUT3+
OUT3-
P-GND4
OUT4+
MUTE
D94AU159B
OUT4-
N.C.
TAB
V
CC
V
CC
5/14
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