TDA7851A

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

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  • 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

Sample & Buy

Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
ECCN (US)
Country of Origin
Order from Distributors
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TDA7851A
Active
1000 2.8 FLEXIWATT FM2 27 Tube EAR99 CHINA Check Availability

Distributor availability ofTDA7851A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 354 1 Order Now
AVNET AMERICA 187 0 Order Now
MOUSER WORLDWIDE 209 1 Order Now
Farnell Element14 EUROPE 18 1 Order Now

Distributor reported inventory date: 2019-12-13

Distributor Name

DIGIKEY

Stock

354

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

187

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

209

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

18

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-13

Buy now

TDA7851A

Marketing Status

Active

Quantity

1000

Unit Price (US$)

2.8*

Distributor availability ofTDA7851A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 354 1 Order Now
AVNET AMERICA 187 0 Order Now
MOUSER WORLDWIDE 209 1 Order Now
Farnell Element14 EUROPE 18 1 Order Now

Distributor reported inventory date: 2019-12-13

Distributor Name

DIGIKEY

Stock

354

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

187

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

209

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

18

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-13

Unit Price (US$)

2.8

Package

FLEXIWATT FM2 27

Packing Type

Tube

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Evaluation Tools

    • Part Number

      EVAL-TDA785x evaluation board for STPA001, STPA003, STPA008, TDA7851A, TDA7850A, and TDA7388A

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS6891
      4 x 48 W MOSFET quad bridge power amplifier
      3.1
      320.24 KB
      PDF
      DS6891

      4 x 48 W MOSFET quad bridge power amplifier

Publications and Collaterals

    • Description Version Size Action
      Intelligent analog power amplifiers 1.0
      715.73 KB
      PDF

      Intelligent analog power amplifiers

    • Description Version Size Action
      Power amplifiers and voltage regulators
      750.29 KB
      PDF

      Power amplifiers and voltage regulators

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TDA7851A
Active
FLEXIWATT FM2 27 Automotive Ecopack2

TDA7851A

Package:

FLEXIWATT FM2 27

Material Declaration**:

PDF XML

Marketing Status

Active

Package

FLEXIWATT FM2 27

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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