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TDA7851ADatasheet PDF
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September 2013 Doc ID 17715 Rev 3 1/15
1
TDA7851A
4 x 48 W MOSFET quad bridge power amplifier
Datasheet production data
Features
■ Multipower BCD technology
■ High output power capability:
–4 x 48 W/4 Max.
–4 x 28 W/4 @ 14.4 V, 1 kHz, 10 %
–4 x 72 W/2 Max.
■ MOSFET output power stage
■ Excellent 2 driving capability
■ Hi-Fi class distortion
■ Low output noise
■ Standby function
■ Mute function
■ Automute at min. supply voltage detection
■ Low external component count:
– Internally fixed gain (26 dB)
– 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
– Output DC offset detection
– Load dump voltage
– Fortuitous open GND
– Reversed battery
– ESD
Description
The TDA7851A is a breakthrough MOSFET
technology class AB audio power amplifier,
designed for high-power car radio.
The fully complementary P-Channel/N-Channel
output structure allows a rail-to-rail output voltage
swing. This, combined with high output current
and minimized saturation losses, sets new power
references in the car-radio field, with unparalleled
distortion performance.
'!0'03
Flexiwatt 27
Table 1. Device summary
Order code Package Packing
TDA7851A Flexiwatt 27 Tube
www.st.com
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