TDA7850 4 x 50 W MOSFET quad bridge power amplifier
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/NChannel 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. The TDA7850 integrates a DC offset detector.
Features
High output power capability:
– 4 x 50 W/4 Ω max.
– 4 x 30 W/4 Ω @ 14.4 V, 1 kHz, 10 %
– 4 x 80 W/2 Ω max.
– 4 x 55 W/2 Ω @ 14.4V, 1 kHz, 10 %
MOSFET output power stage
Excellent 2 Ω 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 (26 dB)
– No external compensation
– No bootstrap capacitors
On board 0.35 A 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
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