LM4755

LM4755 www.ti.com SNAS010E – FEBRUARY 1999 – REVISED APRIL 2013 LM4755 Stereo 11W Audio Power Amplifier with Mute Check for Samples: LM4755 FEATURES 1 2 Drives 4Ω and 8Ω Loads Integrated Mute Function Internal Gain Resistors Minimal External Components Needed Single Supply Operation Internal Current Limiting and Thermal Protection Compact 9-lead TO-220 Package Wide Supply Range 9V - 40V APPLICATIONS Stereos TVs Compact Stereos Mini Component Stereos DESCRIPTION The LM4755 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4Ω load or 7W per channel into 8Ω using a single 24V supply at 10% THD+N. The internal mute circuit and pre-set gain resistors provide for a very economical design solution. Output power specifications at both 20V and 24V supplies and low external component count offer high value to consumer electronic manufacturers for stereo TV and compact stereo applications. The LM4755 is specifically designed for single supply operation. KEY SPECIFICATIONS Output Power at 10% THD with 1kHz into 4Ω at VCC = 24V 11 W (typ) Output Power at 10% THD with 1kHz into 8Ω at VCC = 24V 7 W (typ) Closed Loop Gain 34 dB (typ) PO at 10% THD+N @ 1kHz into 4Ω SingleEnded DDPAK Package at VCC=12V 2.5 W (typ) PO at 10% THD+N @ 1kHz into 8Ω Bridged DDPAK Package at VCC=12V 5 W (typ) 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applicati...