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LM4752 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4752 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 22 page  LM4752 Stereo 11W Audio Power Amplifier General Description The LM4752 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4 Ω load, or 7W per channel into 8Ω using a single 24V supply at 10% THD+N. The LM4752 is specifically designed for single supply opera- tion and a low external component count. The gain and bias resistors are integrated on chip, resulting in a 11W stereo amplifier in a compact 7 pin TO220 package. High output power levels at both 20V and 24V supplies and low external component count offer high value for compact stereo and TV applications. A simple mute function can be implemented with the addition of a few external components. Key Specifications n Output power at 10% THD+N with 1kHz into 4 Ω at V CC = 24V: 11W (typ) n Output power at 10% THD+N with 1kHz into 8 Ω at V CC = 24V: 7W (typ) n Closed loop gain: 34dB (typ) n P O at 10% THD+N @ 1 kHz into 4 Ω single-ended TO-263 package at V CC = 12V: 2.5W (typ) n P O at 10% THD+N @ 1kHz into 8 Ω bridged TO-263 package at V CC = 12V: 5W (typ) Features n Drives 4 Ω and 8Ω loads n Internal gain resistors (A V =34dB) n Minimum external component requirement n Single supply operation n Internal current limiting n Internal thermal protection n Compact 7-lead TO-220 package n Low cost-per-watt n Wide supply range 9V - 40V Applications n Compact stereos n Stereo TVs n Mini component stereos n Multimedia speakers Typical Application 10003901 FIGURE 1. Typical Audio Amplifier Application Circuit August 2000 © 2004 National Semiconductor Corporation DS100039 www.national.com |
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