LC823403B-08B3-E

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LC823403B-08B3-E Application Field and Working PrincipleAudio Special Purpose The LC823403B-08B3-E is a low cost single-chip integrated audio power amplifier (PA) solution specifically designed for the consumer audio market. It comprises of three main components: a low-power driver stage, a high-power output stage, and a low noise power supply controller. This all-in-one system is capable of delivering up to 1.2 Watts of output power into a 4-ohm speaker, making it ideal for a variety of applications including MP3 players, portable audio systems, multimedia speaker, and miniature PA systems.Application FieldThe LC823403B-08B3-E is an ideal choice for applications such as MP3 players, portable audio systems, multimedia speaker, and miniature PA systems where high performance and low cost are required. It is capable of delivering up to 1.2W of output power while maintaining high sound quality. With its low quiescent current, the LC823403B-08B3-E makes an excellent option for energy-constrained applications. It also includes built-in protections against over-temperature, under-voltage, and over-current conditions.Working PrincipleThe LC823403B-08B3-E uses a combination of bipolar transistors and MOSFETs to provide a high performance and cost efficient system. The low power driver stage consists of a differential amplifier and a bipolar power output stage. This output stage is capable of handling up to 0.6W of output power. The high power output stage employs MOSFET power transistors in a Class AB configuratio, capable of delivering up to 1.2W of output power.The LC823403B-08B3-E also includes a low noise power supply controller to optimize the performance of the system in terms of efficiency, sound quality and protection. This power supply controller is responsible for controlling the gate and drain levels in order to maintain optimal performance, while providing built-in protection against over-temperature, under-voltage and over-current conditions. It also includes thermal compensation to adjust the operating parameters of the system in order to optimize the performance.In summary, the LC823403B-08B3-E is a single-chip integrated audio power amplifier solution specifically designed for low cost and high performance applications. It combines a low power driver stage, high power output stage, and low noise power supply controller to deliver up to 1.2 Watts of output power into a 4-ohm speaker. With its built-in protections and thermal compensation, it is an ideal choice for applications such as MP3 players, portable audio systems, multimedia speaker, and miniature PA systems.

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