Monolithic Power Systems MP7751

Description

MP7751 is an analog input Class D Audio Amplifier which can drive stereo speakers in bridge-tied-load configuration. It is one of MPS’ products of fully integrated audio amplifiers which dramatically reduce solution size by integrating the following:

240mΩ power MOSFETs

Startup / 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 18V power supply. MPS Class D Audio Amplifiers exhibit the high fidelity of a Class AB amplifier at high efficiencies.

The MP7751 includes an internal circuit which allows the system automatic shutdown after the absence of the audio signal. This feature is used for energy-using products and for battery operated applications.It also has an adjustable power limit function. The PLIMIT circuit sets a limit on the output peak-to-peak voltage. The limiting is done by limiting the duty cycle to 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 TSSOP-28 EP package.

Features

• 5V to 26V Operation from a Single Supply
• ±5A Peak Current Output
• Output Power:
• 9.5W/channel at 12V, 8Ω Load, 10%THD
• 15W/Channel at 16V, 8Ω Load, 10%THD
• 20W/Channel at 18V, 8Ω Load, 10%THD
• .92% Efficiency with 8Ω Load, 10%THD, 1kHz, 12V Supply Voltage
• -240mΩ power MOSFETs
• • Startup / Shutdown pop elimination
• -Short circuit protection circuits
• -Advanced EMI performance
• -All Switches Current limited
• Internal Under Voltage Protection
• Internal Thermal Protection
• TSSOP-28 EP package
• Adjustable power limiter
• Automatic shutdown with zero input signal detect
• Fault Output Flag

Typical applications

• TV
• DVD Receiver
• Home Theaters
• Active Speaker

More information

• Datasheet
• IC product information