LM4675 - Class D Audio Power Amplifier

Product Overview

National Semiconductor

Datasheet Details

Part number	LM4675
Manufacturer	National Semiconductor
File Size	1.01 MB
Description	Class D Audio Power Amplifier
Datasheet	LM4675 Datasheet
Additional preview pages of the LM4675 datasheet.

Product details

Description

Key Specifications The LM4675 is a single supply, high efficiency, 2.65W, mono, j Efficiency at 3.6V, 400mW into 8Ω speaker 89% (typ) Class D audio amplifier.A spread spectrum, filterless PWM j Efficiency at 3.6V, 100mW into 8Ω speaker 80% (typ) architecture reduces EMI and eliminates the output filter, j Efficiency at 5V, 1W into 8Ω speaker 89% (typ) reducing external component count, board area consumption, system cost, and simplifying design.j Quiescent current, 3.6V supply 2.2mA (typ) The

Features

spectrum architecture of the LM4675 reduces EMI-radiated n Spread spectrum architecture reduces EMI emissions due to the modulator frequency. n Mono Class D Operation The LM4675 has high efficiency with speaker loads comn No output filter required for inductive loads pared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC’s efficiency for a 100mW n Externally configurable gain power level is 80%, reaching 89% at 400mW output power. n Very fast turn on time: 17µs (.

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Published: Oct 10, 2006 |