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LM4853MM Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4853MM Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 17 page  LM4853 Mono 1.5 W / Stereo 300mW Power Amplifier General Description The LM4853 is an audio power amplifier capable of deliver- ing 1.5W (typ) of continuous average power into a mono 4 Ω bridged-tied load (BTL) with 1% THD+N or 95mW per chan- nel of continuous average power into stereo 32 Ω single- ended (SE) loads with 1% THD+N, using a 5V power supply. The LM4853 can automatically switch between mono BTL and stereo SE modes utilizing a headphone sense pin. It is ideal for any system that provides both a monaural speaker output and a stereo line or headphone output Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4853 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4853 features an externally controlled, micropower consumption shutdown mode and thermal shutdown protec- tion. The unity-gain stable LM4853’s gain is set by external gain-setting resistors Key Specifications n Output Power at 1% THD+N, 1kHz: n LM4853LD 3 Ω BTL 1.9W (typ) n LM4853LD 4 Ω BTL 1.7W (typ) n LM4853MM 4 Ω BTL 1.5W (typ) n LM4853MM,LD 8 Ω BTL 1.1W (typ) n LM4853MM,LD 8 Ω SE 300mW (typ) n LM4853MM,LD 32 Ω SE 95mW (typ) n THD+N at 1kHz, 95mW into 32 Ω SE 1% (typ) n Single Supply Operation 2.4 to 5.5V n Shutdown Current 18µA (typ) Features n Mono 1.5W BTL or stereo 300mW output n Headphone sense n “Click and pop” suppression circuitry n No bootstrap capacitors required n Thermal shutdown protection n Unity-gain stable n Available in space-saving MSOP and LLP packaging Applications n Portable computers n Desktop computers n PDA’s n Handheld games Connection Diagrams 20033429 Top View 10 Lead MSOP Order Number LM4853MM See NS Package Number MUB10A 20033428 Top View 14 Lead LLP Order Number LM4853LD See NS Package Number LDA14A Boomer® is a registered trademark of National Semiconductor Corporation. January 2003 © 2003 National Semiconductor Corporation DS200334 www.national.com |
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