TDA8933B Datasheet, PDF(1/42 Page) NXP Semiconductors

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TDA8933B Datasheet, PDF (1/42 Pages) NXP Semiconductors – Class D audio amplifier

TDA8933B

Class D audio ampliï¬er

Rev. 01 â 23 October 2008

Preliminary data sheet

1. General description

The TDA8933B is a high-efï¬ciency class D ampliï¬er with low power dissipation.

The continuous time output power is 2 Ã 10 W in a stereo half-bridge application

(RL = 8 â¦) or 1 Ã 20 W in a mono full-bridge application (RL =16 â¦). Due to the low power

dissipation the device can be used without any external heat sink when playing music.

Due to the implementation of Thermal Foldback (TF) the device remains operating with

considerable music output power without the need for an external heat sink, even for high

supply voltages and/or lower load impedances.

The device has two full differential inputs driving two independent outputs. It can be used

in a mono full-bridge conï¬guration (Bridge-Tied Load (BTL)) or as stereo half-bridge

conï¬guration (Single-Ended (SE)).

2. Features

I Operating voltage from 10 V to 36 V asymmetrical or Â±5 V to Â±18 V symmetrical

I Mono bridge-tied load (full-bridge) or stereo single-ended (half-bridge) application

I Application without heat sink using thermally enhanced small outline package

I High efï¬ciency and low-power dissipation

I Thermal foldback to avoid audio holes

I Current limiting to avoid audio holes

I Full short circuit proof across load and to supply lines (using advanced current

protection)

I Internal or external oscillator (master-slave setting) that can be switched

I No pop noise

I Full differential inputs

3. Applications

I Flat-panel television sets

I Flat-panel monitor sets

I Multimedia systems

I Wireless speakers

I Mini/micro systems

I Home sound sets

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