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MP1720 High-Efficiency Audio Amplifier QFN10
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pMPS MP1720 — High-Efficiency Audio Amplifier, QFN10./p
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MP1720 High-Efficiency Audio Amplifier QFN10
The MPS MP1720 is a High-Efficiency Audio Amplifier. It switches at 1.3 MHz. It is supplied in a QFN10 package.
Key Specifications
| Part Number | MP1720 |
| Function | High-Efficiency Audio Amplifier |
| Output Power | 2.7 W |
| Switching Frequency | 1.3 MHz |
| Peak Efficiency | 90% |
| Package | QFN10 |
| Ordering Codes | MP1720 |
Features
- Passes FCC-Radiated Emissions Standards with 24inch of Cable without output filter
- 2.7W Into 4Ω with 5V VIN @ 10% THD+N
- Up to 90% Efficiency
- Flexible Switching Frequency setting
- Low Noise (53μV Typical) with 3.3V VIN
- 15ms Start-up time Eliminates pop
- Low Quiescent Current (4mA @3.3V)
- Low Shutdown Current (0.1μA)
- Full Bridge Output Drive
- Fully Differential Input
Typical Application Circuit
Applications
- Cellular Phones
- MP3 Players
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
Which package and ordering codes apply to the MP1720?
QFN10; order codes include MP1720.
What are the defining features of the MP1720?
Passes FCC-Radiated Emissions Standards with 24inch of Cable without output filter 2.7W Into 4Ω with 5V VIN @ 10% THD+N
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