MP7722DF-LF-Z - Stereo 2x20W Class-D Amplifier
MPN: MP7722DF-LF-Z ✗ End of Life| Qty | Unit Price | Extended |
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MP7722DF-LF-Z Overview
A Class-D audio amplifier is a power amplifier category that uses switching transistors to deliver energy to a speaker efficiently. Unlike a linear audio amplifier, a Class-D stage reduces internal power dissipation by rapidly switching the output between supply rails and filtering the resulting pulse-width-modulated waveform. MP7722 uses a single-ended output structure, making it suitable for portable speakers, consumer audio products, and powered speaker modules.
The verified manufacturer data identifies the MP7722 as a second-generation fully integrated audio amplifier. Its integrated 180 mOhm MOSFETs reduce external component count and help simplify board layout. Startup and shutdown pop elimination improves user experience by limiting audible transients during power-state changes. Short-circuit protection adds robustness in speaker systems, while mute and standby functions provide control for system integration.
The MP7722DF-LF-Z operates across a 9.5 V to 24 V supply range and is specified for output power up to 20 W per channel into 4 ohms. The verified specifications identify a -40 C to +85 C operating-temperature range and RoHS compliance. These details make the amplifier suitable for equipment operating across commercial and industrial temperature ranges, subject to proper layout, thermal management, and speaker-load verification.
Typical applications include portable Bluetooth speakers, multimedia speaker systems, powered audio accessories, compact consumer audio products, and industrial alarm or announcement systems. The TSSOP-20 package is useful when board area is constrained, but the exposed-pad thermal path and output-current capability must be considered. Input filtering, speaker protection, decoupling, and amplifier shutdown sequencing should follow the manufacturer guidance.
This product page combines verified manufacturer specifications, distributor availability references, application guidance, and design notes. It also distinguishes verified electrical data from parameters requiring an engineering datasheet review, avoiding unsupported assumptions about performance, pin names, pricing, or lifecycle status.
Drop-in alternatives for MP7722DF-LF-Z — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MP7722DF-LF-Z (same form factor and footprint) — differing in Output Power, Integrated Power MOSFET Resistance, Lead-Free Status, Channel Configuration, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MP7722DF-LF
✅ Drop-In📋 Reference alternative (not in catalog)
MP7742DF-LF-Z
✅ Drop-In✓ In Stock
$0.97 / Unit
View Datasheet →MP7745DF-LF-Z
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MP7722DF-LF-Z Maximum Ratings & Electrical Characteristics
| Product Type | Stereo single-ended Class-D audio amplifier |
| Channel Configuration | 2 channels |
| Output Power | 2 x 20 W |
| Speaker Load | 4 ohm |
| Supply Voltage Range | 9.5 V to 24 V |
| Integrated Power MOSFET Resistance | 180 mOhm |
| Output Structure | Single-ended |
| Short-Circuit Protection | Yes |
| Mute or Standby Control | Yes |
| Startup and Shutdown Pop Elimination | Yes |
| Operating Temperature | -40 C to +85 C |
| Package Type | TSSOP-20 |
| RoHS Status | Compliant |
| Manufacturer | Monolithic Power Systems |
| Product Category | Audio amplifier IC |
| Manufacturer Product Family | MP7722 |
| Verified Output Description | Stereo Class-D audio amplifier |
| Package Pin Count | 20 pins |
| Lead-Free Status | Lead-free |
| Datasheet Format |
MP7722DF-LF-Z 20 pins Pin Configuration Guide
Pin configuration for MP7722DF-LF-Z (20 pins package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MP7722DF-LF-Z.
Refer to the datasheet for full pin configuration.
Typical Applications
MP7722DF-LF-Z is suitable for 7 applications: Portable Bluetooth Speaker, Compact Multimedia Speaker, USB and Desktop Audio Accessory, Industrial Audio Annunciator, Consumer Audio Power Module, Powered Speaker Enclosure, Audio Test and Measurement Fixture.
Portable Bluetooth Speaker
The MP7722DF-LF-Z fits a compact powered-speaker design requiring two amplified channels and up to 20 W per channel into 4 ohm speakers. Its 9.5 V to 24 V supply range is suitable when a suitable boost or battery-derived rail is available, while the integrated 180 mOhm MOSFETs reduce external output-stage complexity. The TSSOP-20 package helps conserve board area, but thermal copper, speaker-load current, EMI control, and enclosure heat must be validated before using it in a portable product.
Recommended
Compact Multimedia Speaker
A stereo multimedia speaker can use the MP7722DF-LF-Z to convert line-level audio into two 4 ohm speaker outputs. The verified 2 x 20 W capability provides useful power margin for small desktop or room-filling speakers, while mute or standby control supports product-state management. Designers should check input impedance, gain settings, channel balance, output filtering, and startup behavior in the application circuit before production.
Recommended
USB and Desktop Audio Accessory
The MP7722DF-LF-Z can serve as the output stage in a USB-powered or externally powered desktop audio accessory. The integrated power MOSFETs and single-ended outputs simplify a two-channel speaker amplifier, while startup and shutdown pop elimination helps control audible transitions. The 9.5 V minimum supply means USB 5 V power requires a boost converter or other suitable rail, adding efficiency and EMI design considerations.
Recommended
Industrial Audio Annunciator
For an industrial audio annunciator or active buzzer system, the MP7722DF-LF-Z provides a stereo Class-D output structure with integrated short-circuit protection and mute or standby control. The verified -40 C to +85 C operating range makes it a candidate for broader equipment environments than unverified consumer-only parts. The enclosure, speaker impedance, acoustic limits, transient requirements, and thermal conditions should be validated for the target industrial installation.
Recommended
Consumer Audio Power Module
The MP7722DF-LF-Z is suitable for a compact consumer audio power module that requires stereo output, integrated power devices, and basic output-fault protection. Its TSSOP-20 package supports dense board construction, and the integrated 180 mOhm MOSFETs reduce the number of external output components. The design must still account for speaker impedance, output current, amplifier gain, thermal spreading, ESD protection, and the system power-supply design.
Recommended
Powered Speaker Enclosure
In a powered speaker enclosure, the MP7722DF-LF-Z can provide independent left and right amplified outputs from one stereo audio input. Its verified single-ended Class-D topology and 2 x 20 W capability are relevant for compact stereo speakers, while mute or standby supports system control. Because the output stage dissipates power, the enclosure should provide airflow or copper area sufficient for the worst-case load and supply combination; verify thermal rise in the assembled product.
Recommended
Audio Test and Measurement Fixture
The MP7722DF-LF-Z can be used in a small audio test fixture or powered speaker load platform when the test system needs a reproducible two-channel Class-D output stage. The 9.5 V to 24 V supply requirement makes it more appropriate for bench or rack equipment than a bare 5 V USB source. Use controlled input signals and calibrated load resistors, and confirm output power, distortion, thermal behavior, and protection behavior against the manufacturer’s test conditions.
Recommended
Recommended Products Summary
Engineering reference data for MP7722DF-LF-Z — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MP7722DF-LF | MP7742DF-LF-Z | MP7745DF-LF-Z |
|---|---|---|---|---|
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Package | TSSOP-20 | TSSOP-20 | TSSOP-20 | TSSOP-20 |
Key Differentiators
- Integrated stereo Class-D output stage (vs MP7745DF-LF-Z)
- Single-ended output architecture (vs MP7742DF-LF-Z)
- Integrated protection and control functions (vs MP7722DF-LF)
- Verified supply range (vs MP7745DF-LF-Z)
Design Notes
Estimated thermal design must start with the actual dissipation rather than the nominal 20 W speaker rating. Use Pdiss = (Vsupply - Vspeaker-average) x Ioutput for each channel, then include both channels and the IC bias. Verify the result against the exposed-pad copper area, enclosure temperature, and manufacturer thermal data. The verified data does not provide thermal resistance or a maximum junction temperature, so those values must not be inferred.
Place the amplifier power-loop components and output routing according to the manufacturer reference layout. Keep speaker outputs short, preserve adequate copper around the TSSOP-20 thermal pad, and separate sensitive audio input routing from switching outputs. The integrated 180 mOhm MOSFETs reduce external output hardware, but poor high-current layout can still cause EMI, instability, or thermal problems.
The verified operating range is 9.5 V to 24 V, so a 5 V USB or battery rail alone is insufficient. Select or design a suitable boost or other supply rail, account for amplifier inrush and speaker-load current, and validate ripple at the amplifier pins. Do not assume the full 2 x 20 W rating is available at every supply voltage without checking the manufacturer’s test conditions.
Do not treat the MP7722DF-LF-Z search result as proof of a drop-in replacement. Compare pin names, exposed-pad connection, supply limits, gain-setting network, mute polarity, output topology, and protection behavior from the official datasheets. Also confirm that the selected speaker is 4 ohm or otherwise within the verified load conditions before applying the nominal output-power claim.
Class-D switching outputs can radiate or couple switching noise into adjacent analog circuitry. Use the manufacturer’s recommended input and output filtering, maintain short return paths, connect decoupling close to the device, and test radiated and conducted emissions with the final speaker cable and enclosure. Pop-elimination features reduce startup transients but do not replace good power-supply and grounding design.
Compliance Information
RoHS compliance and lead-free status are stated in the verified search data. REACH, AEC-Q100, halogen-free, and conflict-minerals status are not provided.
