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TDA7381

Active

4 x 25 W quad bridge car radio amplifier

Quantity $ per Unit Savings
1 - 9$6.470%
10 - 24$5.8110%
25 - 99$5.5015%
100 - 249$4.7626%
250 - 356$4.5230%
357 - 500$4.0537%
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Out of stock
$6.47
Parameter NameParameter Value
Supply Voltage Min Volt8.0
Supply Voltage Max Volt18.0
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius105.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTube
ROHS Compliance GradeEcopack2
GradeAutomotive
Package NameFLEXIWATT FM2 25

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