LM4752 - National Semiconductor

LM4752 Stereo 11W Audio Power Amplifier

The LM4752 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 LM4752 is specifically designed for single supply operation and a low external component count. The gain and bias resistors are integrated on chip, resulting in a 1.

Features

n n n n n n n n Drives 4Ω and 8Ω loads Internal gain resistors (AV = 34 dB) Minimum external component requirement Single supply operation Internal current limiting Internal thermal protection Compact 7 lead TO-220 package Low cost-per-watt Key Specifications n Output power at 10% THD+N with 1 kHz into 4Ω at V CC = 24V 11W (typ) n Output power at 10% THD+N with 1 kHz into 8Ω at V CC = 24V 7W (typ) n Closed loop gain 34 dB (typ) n PO at 10% THD @ 1 kHz into 4Ω Single-ended TO-263 pkg. at VCC = 12V 2.5W (typ) Applications n n n n Compact stereos Stereo TVs Mini component stereos Multimedia spe.