Monolithic Power Systems (MPS) MP7758 Audio Amplifiers

Monolithic Power Systems (MPS) MP7758 Audio Amplifiers

Monolithic Power SystemsMP7758 Audio Amplifiers are inductor less, fixed frequency, analog input Class-D audio amplifiers that drives power stereo speakers in a bridge-tied load configuration. These amplifiers are completely integrated thus reducing the solution size. The MP7758 audio amplifiers integrate 240mΩ power MOSFETs and short-circuit protection circuits. These audio amplifiers feature start-up/shutdown pop elimination, advanced EMI performance and are capable of passing EMC tests without an inductor. The MP7758 audio amplifiers are capable of delivering 15W per channel into speakers with a 16V power supply utilizing a stereo BTL structure. These devices exhibit a high fidelity of class-AB amplifiers, with high efficiency, offer an adjustable power limit (PLIMIT) function, and fault output flag. The MP7758 audio amplifiers are widely used in wireless/portable speakers, TVs, DVD receivers, and active speakers.


  • 5V to 18V 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
  • 90% efficiency with 8Ω load, 10% THD, 1kHz, 12V supply voltage
  • 240mΩ power MOSFETs
  • Start-Up/Shutdown pop elimination
  • Short-circuit protection circuits
  • Inductorless topology
  • Advanced EMI performance
  • All switches are current limited
  • Internal Under-Voltage Protection (UVP)
  • Internal thermal protection
  • Adjustable power limit
  • Automatic shutdown with zero input signal detection
  • Fault output flag
  • Available in a TSSOP-28 EP package

Application Diagram

Block Diagram


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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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