MP7705 9.5-12V 12V, 2x5W/2x2.5W Class–D Stereo Single Ended Audio Amplifier TSSOP20

MP7705 9.5-12V 12V, 2x5W/2x2.5W Class–D Stereo Single Ended Audio Amplifier TSSOP20

Key Specifications

Features

• 2x2.5W Output at VDD = 12V (8Ω load)
• 2x5W Output at VDD = 12V (4Ω load)
• THD+N = 0.06% at 1W, 8Ω
• 95% Efficiency at 2.5W
• Low Noise (190μV Typical)
• Switching Frequency Up to 1MHz
• 9.5V to 12V Single-Supply Operation
• Integrated Startup and Shutdown Pop Elimination Circuit
• Thermal and Short Circuit Protection
• Integrated 250mΩ Switches

Typical Application Circuit

Applications

• Surround Sound DVD Systems
• Televisions
• Flat Panel Monitors
• Multimedia Computers

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