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  • The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail output voltage swing with no need of bootstrap capacitors..

    The extremely reduced components count allows very compact sets. The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during car-radio assembly and wiring in the car.

    Key Features

    • High output power capability:
      • 4 x 30 W/4 Ω max.
      • 4 x 25 W/4 Ω EIAJ
      • 4 x 18 W/4 Ω @ 14.4 V, 1 kHz, 10 %
      • 4 x 15 W/4 Ω @ 13.2 V, 1 kHz, 10 %
    • Clipping detector
    • Low distortion
    • Low output noise
    • Standby function
    • Mute function
    • Automute at min. supply voltage detection
    • Diagnostics facility for:
      • Clipping
      • Out to GND short
      • Out to VSshort
      • Thermal shutdown
    • 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
      • Load dump voltage
      • Fortuitous open GND
      • Reversed battery
      • ESD protection

Sample & Buy

Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
TDA7381
Active
- - FLEXIWATT FM2 25 Tube EAR99 CHINA No availability of distributors reported, please contact our sales office

TDA7381

Marketing Status

Active

Quantity

-

Unit Price (US$)

*

Unit Price (US$)

-

Package

FLEXIWATT FM2 25

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

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS1050
      4 x 25 W quad bridge car radio amplifier
      8.0
      321.98 KB
      PDF
      DS1050

      4 x 25 W quad bridge car radio 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**
TDA7381
Active
FLEXIWATT FM2 25 Automotive Ecopack2

TDA7381

Package:

FLEXIWATT FM2 25

Material Declaration**:

Marketing Status

Active

Package

FLEXIWATT FM2 25

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.