50W Class-D Mono Bridged Audio Amplifier

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The MP7782 is a mono, 50W Class D Audio Amplifier. It is one of MPS’ second generation fully integrated audio amplifiers which dramatically reduces solution size by integrating four 180mΩ power MOSFETs in a space saving TSSOP20 package. The MP7782 utilizes a full bridge output structure capable of delivering 50W into 6Ω speakers. As in allother MPS Class D audio amplifiers, this device exhibits the high fidelity of a Class AB amplifier with an efficiency of 90%. The circuit is based on ADAMTM (Analog Digital Adaptive Modulation), MPS’ proprietary variable frequency modulation topology (patents pending) that delivers excellent PSRR, fast response time and operates on a single power supply.


  • 50W into 6Ω with VDD = 24V @10% THD+N
  • 90% Efficiency at 50W
  • Amplifies Full Audio Range with Low THD+N
  • THD+N = 0.06% @ 1W
  • 9.5V to 24V Supply Voltage Operation
  • Full Bridge Output Drive
  • 4 Integrated 180mΩ Switches
  • Turn-On / Turn-Off Click and Pop Suppression
  • Integrated Short Circuit Protection
  • Integrated Thermal Shutdown
  • Mute / Standby Mode
  • Thermally Enhanced 20-Pin TSSOP Package with Exposed Pad


  • PackageTSSOP20E
  • GradeCatalog
  • TypeMono BTL
  • Isw Limit (A)5
  • Total Pout (max) (W)50
  • PSRR (dB)-60
  • THD+N (%) @1W0.06
  • Efficiency (%)90
  • Vin (max) (V)24
  • Vin (min) (V)9.5