LM4766

LM4766 www.ti.com SNAS031F – SEPTEMBER 1998 – REVISED MARCH 2013 LM4766 Overture™ Audio Power Amplifier Series Dual 40W Audio Power Amplifier with Mute Check for Samples: LM4766 FEATURES 1 23 SPiKe Protection Minimal Amount of External Components Necessary Quiet Fade-In/Out Mute Mode Non-Isolated 15-Lead TO-220 Package Wide Supply Range 20V - 78V APPLICATIONS High-End Stereo TVs Component Stereo Compact Stereo KEY SPECIFICATIONS THD+N at 1kHz at 2 x 30W Continuous Average Output Power Into 8Ω 0.1% (Max) THD+N at 1kHz at Continuous Average Output Power of 2 x 30W Into 8Ω 0.009% (Typ) DESCRIPTION The LM4766 is a stereo audio amplifier capable of delivering typically 40W per channel with the nonisolated "NDL" package and 30W per channel with the isolated "NDB" package of continuous average output power into an 8Ω load with less than 0.1% (THD+N). The performance of the LM4766, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe) Protection Circuitry, places 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 safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks. Each amplifier within the LM4766 has an independent smooth transition fade-in/out mute that minimizes output pops. The IC's extremely low noise floor at 2µV and its extremely low THD+N valu...