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TDA7850 Datasheet PDF - ST Microelectronics

Part Number TDA7850
Description 4 x 50W MOSFET Quad Bridge Power Amplifier Plus HSD
Manufacturers ST Microelectronics 
Logo ST Microelectronics Logo 



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TDA7850 datasheet, circuit
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TDA7850
4 x 50W MOSFET
Quad bridge power amplifier plus HSD
Features
Superior output power capability:
4 x 50W/4Ω Max.
4 x 30W/4Ω @ 14.4V, 1KHz, 10%
4 x 80W/2Ω Max.
4 x 55W/2Ω @ 14.4V, 1KHz, 10%
MOSFET Output power stage
Excellent 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
On board 0.35A high side driver
Protections:
Output short circuit to GND, to Vs, across the
load
Very inductive loads
Overrating chip temperature with soft thermal
limiter
Output DC offset detection
Load dump voltage
Fortuitous open GND
Reversed battery
ESD
Flexiwatt25
(Vertical)
Flexiwatt25
(Horizontal)
Description
The TDA7850 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 minimised saturation losses,
sets new power references in the car-radio field,
with unparalleled distortion performances.
The TDA7850 integrates a DC offset detector.
Order codes
Part number
TDA7850
TDA7850H
Package
Flexiwatt25 (Vertical)
Flexiwatt25 (Horizontal)
Packing
Tube
Tube
November 2006
Rev 1
1/14
www.st.com
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TDA7850 equivalent
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TDA7850
Block diagram and pin description
1 Block diagram and pin description
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
HSD
TAB S-GND
Figure 2. Pin connection (Top view)
470μF
100nF
HSD/VOFF_DET
OUT1+
OUT1-
PW-GND
OUT2+
OUT2-
PW-GND
OUT3+
OUT3-
PW-GND
OUT4+
OUT4-
PW-GND
D94AU158D
TAB
P-GND2
OUT2-
ST-BY
OUT2+
VCC
OUT1-
P-GND1
OUT1+
SVR
IN1
IN2
S-GND
IN4
IN3
AC-GND
OUT3+
P-GND3
OUT3-
VCC
OUT4+
MUTE
OUT4-
P-GND4
HSD
1
25
D94AU159A
Vertical
TAB
P-GND2
OUT2-
ST-BY
OUT2+
VCC
OUT1-
P-GND1
OUT1+
SVR
IN1
IN2
S-GND
IN4
IN3
AC-GND
OUT3+
P-GND3
OUT3-
VCC
OUT4+
MUTE
OUT4-
P-GND4
HSD
1
25
D06AU1655
Horizontal
5/14

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Information Total 14 Pages
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