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PDF TDA7854 Data sheet ( Hoja de datos )
| Número de pieza | TDA7854 | |
| Descripción | 4 x 47W MOSFET quad bridge power amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TDA7854
4 x 47W MOSFET quad bridge power amplifier
Features
■ Multipower BCD technology
■ High output power capability:
– 4 x 47W/4Ω max.
– 4 x 80W/2Ω max.
■ MOSFET output power stage
www.DataShe■et4EUxc.ceollemnt 2Ω driving capability
■ Hi-fi class 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
Protections:
■ Output short circuit to GND, to Vs, across the
load
■ Very inductive loads
■ Overrating chip temperature with soft thermal
limiter
■ Load dump voltage
Flexiwatt 25
■ Fortuitous open GND
■ Reversed battery
■ ESD
Description
The TDA7854 is a breakthrough MOSFET
technology class AB audio power amplifier in
Flexiwatt 25 package designed for high power car
radio. The fully complementary P-Channel/N-
Channel output structure allows a rail to rail
output voltage swing which, combined with high
output current and minimized saturation losses
sets new power references in the car-radio field,
with unparalleled distortion performances.
Table 1. Device summary
Order code
TDA7854
Package
Flexiwatt 25
Packing
Tube
October 2007
Rev 1
1/12
www.st.com
1
1 page  
TDA7854
Block diagram and application circuit
1 Block diagram and application circuit
1.1
Block diagram
Figure 1. Block diagram
Vcc1
ST-BY
MUTE
IN1
Vcc2
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IN2
IN3
IN4
AC-GND
SVR
TAB S-GND
CD
OUT1+
OUT1-
PW-GND
OUT2+
OUT2-
PW-GND
OUT3+
OUT3-
PW-GND
OUT4+
OUT4-
PW-GND
D06AU1646
1.2
Application circuit
Figure 2. Application circuit
ST-BY
MUTE
IN1
R1
10K
R2
47K
C1
0.1μF
IN2
C2 0.1μF
IN3
C3 0.1μF
IN4
C4 0.1μF
C8
0.1μF
4
C9
1μF
22
C10
1μF
11
C7
2200μF
Vcc1-2 Vcc3-4
6 20
9
8
7
5
2
3
OUT1
OUT2
12
15
S-GND
14
13
16
C5
0.47μF
10 25
C6
47μF
SVR
CD
CD OUT
17
18
19
21
24
23
1
TAB
R3
47K
D06AU1647A
V
OUT3
OUT4
5/12
5 Page 
TDA7854
6 Revision history
Table 5. Document revision history
Date
Revision
4-Oct-2007
1 Initial release.
Revision history
Changes
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11/12
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet TDA7854.PDF ] | |
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