TDA7386
TDA7386
4 x 45 W quad bridge car radio amplifier
Features
■
■
■
■
■
■
■
■
■
■
High output power capability:
4 x 45W/4
Ω max.
4 x 28W/4
Ω @ 14.4V, 1KHz, 10%
4 x 24W/4
Ω @ 13.2V, 1KHz, 10%
Low distortion
Low output noise
Standby function
Mute function
Automute at min. supply voltage detection
Low external component count:
– Internally fixed gain (26dB)
– No external compensation
– No bootstrap capacitors
Flexiwatt25
■
■
■
■
Load dump voltage
Fortuitous open GND
Reversed battery
ESD
■
■
Protections
■
Output short circuit to GND, to V
S
, across the load
Very inductive loads
Overrating chip temperature with soft thermal limiter
Table 1.
Device summary
Order code
TDA7386
Package
Flexiwatt25
Description
The TDA7386 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 TDA7386 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.
Packing
Tube
November 2008 Rev 4 1/14
www.st.com
1
Contents
Contents
TDA7386
Block and pin connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PCB and component layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2/14
TDA7386
List of tables
List of tables
3/14
List of figures
List of figures
TDA7386
4/14
TDA7386
1
Block and pin connection diagrams
Block and pin connection diagrams
Figure 1.
Block diagram
Vcc1
ST-BY
MUTE
IN1
0.1µF
IN2
0.1µF
IN3
0.1µF
IN4
0.1µF
AC-GND
0.47µF
SVR
47µF
Vcc2
TAB S-GND
2200µF
N.C.
OUT1+
OUT1-
PW-GND
OUT2+
OUT2-
PW-GND
OUT3+
OUT3-
PW-GND
OUT4+
OUT4-
PW-GND
100nF
D99AU1018A
Figure 2.
Pin connection (top view)
1 25
D94AU159B
5/14
Electrical specifications TDA7386
2.1 Absolute maximum ratings
Table 2.
Symbol
V
CC
V
CC (DC)
V
CC (pk)
I
O
P tot
T amb
T j
T stg
Absolute maximum ratings
Parameter
Operating supply voltage
DC supply voltage
Peak supply voltage (t = 50ms)
Output peak current:
Repetitive (Duty Cycle 10% at f = 10Hz)
Non Repetitive (t = 100
μs)
Power dissipation, (T case
= 70°C)
Operating temperature range
Junction temperature
Storage temperature
Value
18
28
50
4.5
5.5
80
– 40 to 105
150
– 55 to 150
Table 3.
Symbol
Thermal data
Parameter
R th j-case
Thermal resistance junction to case max.
Value
1
Unit
°C/W
Table 4.
Symbol
I q1
V
OS
ΔV
OS
G v
ΔG v
P o
P o max
Electrical characteristics
V
S
= 14.4 V; f = 1 kHz; R g
= 600
Ω; R
L
= 4
Ω; T amb
= 25 °C; Refer to the test and application diagram, unless otherwise specified.
Parameter Min.
Typ.
Max.
Unit
R
L
=
∞
Play Mode
Test condition
190 350
±80 mA mV
Quiescent current
Output offset voltage
During mute on/off output offset voltage
Voltage gain
Channel gain unbalance
25 26
±80
27
±1 mV
Output power
Max.output power
(1)
THD = 10%; V
S
= 13.2V
THD = 0.8%; V
S
= 13.2V
THD = 10%; V
S
= 14.4V
V
S
= 14.4V
22
16.5
26
43
24
18
28
45 dB dB
W
W
W
W
6/14
Unit
V
V
V
A
A
W
°C
°C
°C
TDA7386 Electrical specifications
Table 4.
Electrical characteristics (continued)
V
S
= 14.4 V; f = 1 kHz; R g
= 600
Ω; R
L
= 4
Ω; T amb
= 25 °C; Refer to the test and application diagram, unless otherwise specified.
Parameter Test condition Min.
Typ.
Max.
Unit Symbol
THD e
No
SVR f ch
R i
Distortion
Output noise
Supply voltage rejection
High cut-off frequency
Input impedance
P o
= 4W
"A" Weighted
Bw = 20 Hz to 20 kHz f = 100 Hz; V
P o
= 0.5 W r
= 1V rms
C
T
Cross talk f = 1 kHz; Po = 4 W f = 10 kHz; Po = 4W
V
I
I
SB pin4
SB out
Standby current consumption
V
St-by
= 1.5
V
St-by
= 0 V
V
St-by
= 1.5 to 3.5 V Standby pin current
Standby out threshold voltage
(Amp: on)
Standby in threshold voltage (Amp: off) V
SB IN
V
I
V
V
A
M
M out
M in
AM in pin22
Mute attenuation P
Oref
= 4W
Mute out threshold voltage (Amp: play)
Mute in threshold voltage
V
S
automute threshold
Muting pin current
(Amp: mute)
(Amp: mute); Att
≥ 80dB; P
Oref
(Amp: play); Att < 0.1dB; P
O
= 4
Ω
= 0.5
Ω
V
MUTE
= 1.5V (Source current)
V
MUTE
= 3.5V
1.
Saturated square wave output.
50
80
70
60
3.5
80
3.5
5
-5
0.04
50
70
75
200
100
70
60
90
7.6
11
-
0.15
70
100
1.5
1.5
6.5
8.5
20
20
50
20
±1
KHz
K
Ω dB dB
μA
μA
μA
%
μV
μV dB
V
V dB
V
V
V
V
μA
μA
Figure 3.
Standard test and application circuit
C8
0.1
μF
C7
2200
μF
Vcc1-2
6
Vcc3-4
20
ST-BY
MUTE
R1
10K
R2
47K
C1
C9
1
μF
C10
1
μF
4
22
IN1 11
0.1
μF
IN2 12
C2 0.1
μF
IN3 15
C3 0.1
μF
IN4
C4 0.1
μF
S-GND
14
13
16
C5
0.47
μF
SVR
C6
47
μF
10 25
N.C.
21
24
23
1
TAB
5
2
3
9
8
7
17
18
19
OUT1
OUT2
OUT3
OUT4
D95AU335C
7/14
Electrical specifications
2.4 PCB and component layout
Referred to the circuit of
Figure 4.
Components and top copper layer
TDA7386
Figure 5.
Bottom copper layer
8/14
TDA7386 Electrical specifications
Figure 6.
Quiescent current vs. supply voltage Figure 7.
Quiescent output voltage vs. supply voltage
Figure 8.
Output power vs. supply voltage Figure 9.
Max. output power vs. supply voltage
Figure 10. Distortion vs. output power Figure 11. Distortion vs. frequency
9/14
Electrical specifications
Figure 12. Supply voltage rejection vs. frequency
Figure 13. Crosstalk vs. frequency
TDA7386
Figure 14. Output noise vs. source resistance Figure 15. Power dissipation and efficiency vs. output power
10/14
TDA7386 Application hints
Referred to the circuit of
3.1 SVR
Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF time sequence and, consequently, plays an essential role in the pop optimization during
ON/OFF transients.
To conveniently serve both needs, ITS MINIMUM RECOMMENDED VALUE IS 10
μF.
The TDA7386’s inputs are ground-compatible and can stand very high input signals (±8Vpk) without any performances degradation.
If the standard value for the input capacitors (0.1
μF) is adopted, the low frequency cut-off will amount to 16 Hz.
3.3 Standby muting
Standby and muting facilities are both CMOS-compatible. If unused, a straight connection to
Vs of their respective pins would be admissible.
Conventional/low-power transistors can be employed to drive muting and stand-by pins in absence of true CMOS ports or microprocessors. R-C cells have always to be used in order to smooth down the transitions for preventing any audible transient noises.
Since a DC current of about 10 µA normally flows out of pin 22, the maximum allowable muting-series resistance (R
2
) is 70 K
Ω, which is sufficiently high to permit a muting capacitor reasonably small (about 1µF).
If R
2
is higher than recommended, the involved risk will be that the voltage at pin 22 may rise to above the 1.5 V threshold voltage and the device will consequently fail to turn OFF when the mute line is brought down.
About the stand-by, the time constant to be assigned in order to obtain a virtually pop-free transition has to be slower than 2.5V/ms.
11/14
Package information TDA7386
12/14
In order to meet environmental requirements, ST (also) offers these devices in ECOPACK
® packages. ECOPACK
®
packages are lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard
JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
Figure 16. Flexiwatt25 mechanical data and package dimensions mm inch
DIM.
A
B
C
D
E
F (1)
G
G1
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
4.45
4.50
4.65
0.175
0.177
0.183
1.80
1.90
2.00
0.070
0.074
0.079
1.40
0.055
0.75
0.90
1.05
0.029
0.035
0.041
0.37
0.80
0.39
1.00
0.42
0.57
1.20
0.014
0.031
0.015
0.040
0.016
0.022
0.047
23.75
24.00
24.25
0.935
0.945
0.955
H (2) 28.90
29.23
29.30
1.139
1.150
1.153
H1
H2
17.00
12.80
0.669
0.503
H3 0.80
0.031
L (2) 22.07
22.47
22.87
0.869
0.884
0.904
L1 18.57
18.97
19.37
0.731
0.747
0.762
L2 (2) 15.50
15.70
15.90
0.610
0.618
0.626
L3 7.70
7.85
7.95
0.303
0.309
0.313
L4 5 0.197
L5
M
M1
N
O
R
R1
R2
R3
R4
3.70
3.60
3.5
4.00
4.00
2.20
2
1.70
0.5
0.3
1.25
0.50
4.30
4.40
0.145
0.142
V
V1
V2
V3
5˚ (T p.)
3˚ (Typ.)
20˚ (Typ.)
45˚ (Typ.)
(1): dam-bar protusion not included
(2): molding protusion included
0.138
0.157
0.157
0.086
0.079
0.067
0.02
0.12
0.049
0.019
0.169
0.173
OUTLINE AND
MECHANICAL DATA
Flexiwatt25 (vertical)
V
C
B
V
H
H1
V3
H3
R3
H2
A
R4
V1
N
R
R2
L L1
V1
V2
Pin 1
G
G1
F
R2
FLEX25ME
L5
R1
D
R1
M
R1
E
M1
7034862
TDA7386 Revision history
Table 5.
Date
Document revision history
24-Nov-2001
20-Dec-2007
29-Oct-2008
19-Nov-2008
Revision
1
2
3
4
Changes
Initial release.
Document reformatted.
.
Table 4: Electrical characteristics
Table 3: Thermal data on page 6
.
Update the
Table 2: Absolute maximum ratings on page 6
13/14
TDA7386
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2008 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
14/14
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project