MPQ7795A-AEC1 Mono BTL Class-D Audio Amplifier QFN-24

MPQ7795A-AEC1 Mono BTL Class-D Audio Amplifier QFN-24

The MPQ7795A is an automotive-grade, low- EMI, differential analog input Class-D audio amplifier with I2C diagnostics.

Key Specifications

Features

• Built to Handle Tough Automotive Transients o Load Dump Up to 42V o Cold Crank Down to 4.5V o Available in AEC-Q100 Grade 1
• Cooler Thermals o Delivers 24.5W into 4Ω Loads with 14.4V PVDD o High Power Efficiency
• Up to 92.6% for 8Ω Load
• Up to 90.4% for 4Ω Load o Less than 20°C Junction Temperature (TJ) Rise at 8Ω, 14W/470kHz o Low-Ohmic BCD FET Technology
• Low EMI/EMC Noise o Meets CISPR 25 Class 5 o MeshConnectTM Flip-Chip Packaging o Operates Outside of AM Radio Band
• Extends Vehicle Battery Life o 0.02μA Standby Current (IQSTBY) o 16mA Quiescent Current (IQ)
• Additional Features o Load Diagnostics
• Open Load or Short Load

Typical Application Circuit

Applications

• Automotive E-Call Systems
• Telematics Systems
• Infotainment Audio

Design Notes

• The output LC filter corner should sit well below the modulation frequency but above the audio band; component tolerance shifts it more than the nominal value suggests.
• Switching residuals on the speaker leads are best handled at layout — keep the filter close to the amplifier pins.
• Power supply rejection is frequency dependent, so a clean rail still matters at the modulation harmonics.
• The exposed pad is the thermal path; solder it to a copper area sized for continuous output power, not for idle.

Common Questions