www.DataSheet4U.com
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
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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
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