TDA7851A:Quad BTL output with stand-by and mute inputs, clip and offset detection

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.

Key Features

  • Multipower BCD technology
  • High output power capability:
    • 4 x 48 W/4 Ω Max.
    • 4 x 28 W/4 Ω @ 14.4 V, 1 kHz, 10 %
    • 4 x 72 W/2 Ω Max.
  • MOSFET output power stage
  • Excellent 2 Ω 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
Product Specifications
DescriptionVersionSize
DS6891: 4 x 48 W MOSFET quad bridge power amplifier3.1320 KB
Selection Guides
DescriptionVersionSize
Power amplifiers and voltage regulators750 KB
Sample & Buy
Part NumberQuantityUnit Price (US$) *PackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
TDA7851A10002.8FLEXIWATT FM2 27Tube-105NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
TDA7851AFLEXIWATT FM2 27AutomotiveEcopack2md_48-wspc-flexiwatt-wspc-fm2-wspc-27-wspc-lds_h948-wspc-uk20ae6.pdf
md_48-wspc-flexiwatt-wspc-fm2-wspc-27-wspc-lds_h948-wspc-uk20ae6.xml
4 x 48 W MOSFET quad bridge power amplifier TDA7851A
circuit_diagram_17715_thumbnail.png TDA7851A
ST SPI protocol L99PM72PXP
md_48-wspc-flexiwatt-wspc-fm2-wspc-27-wspc-lds_h948-wspc-uk20ae6.pdf TDA7851A
md_48-wspc-flexiwatt-wspc-fm2-wspc-27-wspc-lds_h948-wspc-uk20ae6.xml TDA7851A