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LM4819LD Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4819LD Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 21 page  LM4819 350mW Audio Power Amplifier with Shutdown Mode General Description The LM4819 is a mono bridged power amplifier that is ca- pable of delivering 350mW RMS output power into a 16Ω load or 300mW RMS output power into an 8Ω load with 10% THD+N from a 5V power supply. The LM4819 Boomer audio power amplifier is designed specifically to provide high quality output power and mini- mize PCB area with surface mount packaging and a minimal amount of external components. Since the LM4819 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power por- table applications. The closed loop response of the unity-gain stable LM4819 can be configured using external gain-setting resistors. The device is available in LLP, MSOP, and SO package types to suit various applications. Key Specifications n THD+N at 1kHz, 350mW continuous average output power into 16 Ω 10% (max) n THD+N at 1kHz, 300mW continuous average output power into 8 Ω 10% (max) n Shutdown Current 0.7µA (typ) Features n LLP, SOP, and MSOP surface mount packaging. n Switch on/off click suppression. n Unity-gain stable. n Minimum external components. Applications n General purpose audio n Portable electronic devices n Information Appliances (IA) Typical Application Boomer® is a registered trademark of National Semiconductor Corporation. DS200136-1 FIGURE 1. Typical Audio Amplifier Application Circuit April 2002 © 2002 National Semiconductor Corporation DS200136 www.national.com |
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