MP7752 5-18V Inductorless Class-D Audio Amplifier TSSOP-28

MP7752 5-18V Inductorless Class-D Audio Amplifier TSSOP-28

The MP7752 is an analog input inductorless class-D audio amplifier, which drives stereo speakers in bridge-tied-load configuration.

Key Specifications

Features

• 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 Current Limited

Typical Application Circuit

Applications

• DVD Receiver

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