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TDF8546 - 4 x 45 W best efficiency amplifier

General Description

The TDF8546 is one of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers intended for automotive applications.

It has a best efficiency mode with full I2C-bus controlled diagnostics, including start-up diagnostics.

Key Features

  • Stop/start-car prepared: keeps operating without audible disturbance during engine start at a battery voltage as low as 6 V.
  • New best efficiency mode with patented low switching distortion.
  • Extreme best efficiency mode (uses information from 4 channels) with 17 % less dissipation for uncorrelated signals compared to 2-channel best efficiency mode.
  • Operates in either legacy (non-I2C-bus) or I2C-bus modes (3.3 V and 5 V compliant).
  • Four hardware-programmable I2C-bus addr.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TDF8546 I2C-bus controlled 4  45 W best efficiency amplifier Rev. 8 — 27 September 2013 Product short data sheet 1. General description The TDF8546 is one of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers intended for automotive applications. It has a best efficiency mode with full I2C-bus controlled diagnostics, including start-up diagnostics. The TDF8546 can operate at a battery voltage as low as 6 V making this amplifier suitable for stop/start-car operation. The new best efficiency principle uses a patented switch technique which reduces switching distortion. To reduce power dissipation, the new best efficiency principle uses the audio information on all four channels instead of only the front or rear signals.