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LM3875 Datasheet High-Performance 56W Audio Power Amplifier

Manufacturer: Texas Instruments

General Description

The LM3875 is a high-performance audio power amplifier capable of delivering 56W of continuous average power to an 8Ω load with 0.1% THD+N from 20Hz to 20kHz.

The performance of the LM3875, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA).

SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, caused by shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

Overview

LM3875 www.ti.com SNAS083D – JUNE 1999 – REVISED APRIL 2013 LM3875 Overture™ Audio Power Amplifier Series High-Performance 56W Audio Power Amplifier Check for Samples:.

Key Features

  • 1.
  • 23 56W Continuous Average Output Power Into 8Ω.
  • 100W Instantaneous Peak Output Power Capability.
  • Signal-to-Noise Ratio >95dB (min).
  • Output Protection From A Short to Ground or to the Supplies Via Internal Current Limiting Circuitry.
  • Output Over-Voltage Protection Against Transients From Inductive Loads.
  • Supply Under-Voltage Protection, Not Allowing Internal Biasing to Occur When |V+| + |V.
  • | ≤ 12V, Thus Eliminating Turn-On and Turn-O.