LM4864MM Integrated Circuits (ICs)

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The LM4864MM is a monolithic dual power amplifier designed for use in portable electronic applications such as cellular phones and PDAs. It is designed for both single-ended and bridge-tied load (BTL) applications, and is capable of delivering up to 1.3 watts of continuous average output power when operating from a 3V supply into an 8 ohm load. The LM4864MM has excellent frequency response, high efficiency and low quiescent current requirement.

The LM4864MM application field is increasing rapidly with the advancement of mobile devices. It is used in applications such as portable audio systems, wireless speakers and personal musical instruments. It offers an excellent solution for portable audio systems since it is capable of delivering a high output power with high efficiency and low quiescent current requirements. It is also used in various multimedia applications such as digital picture frames and MP3 players. The LM4864MM can also be used in high power, low noise industrial designs.

The LM4864MM is powered by a dual-supply voltage from 3V to 5V, and it is designed to work with a single-ended load or BTL load. The device has a wide frequency response from 10Hz to 20kHz with a distortion of less than 0.1% at 1kHz. It has high power-supply rejection ratio and can drive up to a 10 ohm load. The device has a wide operational temperature range of -40℃ to +85℃.

The LM4864MM features an integraed, low noise trimidiator which combines an input amplifier and a low quiescent current driver. The integrated trimidiator reduces external component count and provides a low parts count solution. The built-in trimiditor includes a high gain, low noise main amplifier and a low-noise voltage-gain amplifier. The output stage drives a power MOSFET to deliver up to 1.3 watts of output power.

The LM4864MM also features a built-in thermal shutdown circuit and a fast start up with signal sensing. The thermal shutdown circuit protects the device from possible thermal damage. The signal sensing circuitry provides a fast start-up and protects the device from sudden power-down events. The temperature range for normal operation is -40℃ to +85℃.

The LM4864MM is an ideal solution for energy efficient, low power, audio applications. It is designed to meet the demands of the portable audio market where high output power and low quiescent current requirements are the main design drivers. It is also suitable for use in high power low noise industrial applications. The LM4864MM is available in a small SOT-23-6 package and offers high performance, a low part count solution and a highly reliable solution for portable audio applications.

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