MP7751

The MP7751 is an analog input, Class-D audio amplifier that can drive stereo speakers in a bridge-tied-load configuration. It is one of MPS’s suite of fully integrated audio amplifiers, which dramatically reduce solution size by integrating the following:

• 240mΩ power MOSFETs
• Start-up / Shutdown pop elimination
• Short-circuit protection circuits
• Advanced EMI performance

The MP7751 utilizes a stereo BTL structure capable of delivering 20W per channel into 8Ω speakers at an 18V power supply. MPS's Class-D audio amplifiers exhibit the high fidelity of a Class-AB amplifier at high efficiencies.

The MP7751 includes an internal circuit that allows the system to automatically shut down when no audio signal is detected. This feature is ideal for energy-saving products and battery-operated applications. 

It also has an adjustable power limit function. The PLIMIT circuit sets a limit on the output peak-to-peak voltage. This is accomplished by limiting the duty cycle to a fixed maximum value. This limit can be thought of as a virtual voltage rail, which is lower than the supply connected to PVCC. The MP7751 is available in a TSSOP-28EP package.