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LM4755 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4755 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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LM4755 Stereo 11W Audio Power Amplifier with Mute General Description The LM4755 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 internal mute circuit and pre-set gain re- sistors 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 con- sumer electronic manufacturers for stereo TV and compact stereo applications. The LM4755 is specifically designed for single supply operation. Key Specifications n Output power at 10% THD with 1 kHz into 4 Ω at V CC = 24V 11W(typ) n Output power at 10% THD with 1 kHz into 8 Ω 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 V CC=12V 2.5W(typ) n PO at 10% THD @ 1 kHz into 8Ω bridged TO-263 pkg. at V CC=12V 5W(typ) Features n Drives 4 Ω and 8Ω loads n Integrated mute function n Internal Gain Resistors n Minimal external components needed n Single supply operation n Internal current limiting and thermal protection n Compact 9-lead TO-220 package Applications n Stereos TVs n Compact stereos n Mini component stereos Typical Application Connection Diagrams DS100059-1 FIGURE 1. Typical Audio Amplifier Application Circuit Plastic Package DS100059-2 Package Description Top View Order Number LM4755T Package Number TA09A DS100059-36 Top View Order Number LM4755TS Package Number TS9A February 1999 © 1999 National Semiconductor Corporation DS100059 www.national.com |
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