MP7731DF-LF-Z - 30W Mono Class-D Amplifier | MPS
MPN: MP7731DF-LF-Z ✓ NakahandaMP7731DF-LF-Z Ulas
A Class-D audio amplifier is a switching power-conversion device that uses pulse-width modulation to reproduce an analog audio waveform at the speaker output. In a bridged mono configuration, the differential output can provide more voltage swing to a speaker than a conventional single-ended amplifier. The MP7731 belongs to the audio amplifier hierarchy and the broader integrated-circuit and power-management semiconductor categories.
The principal feature of the MP7731DF-LF-Z is its 30W maximum mono output capability from a 9.5V to 18V supply. Integrating 180mΩ power MOSFETs reduces the need for external output transistors and simplifies the audio power stage. Startup and shutdown pop elimination helps suppress audible transients, while integrated short-circuit protection improves robustness in speaker-drive applications. Mute and standby modes support controlled power management.
The full-bridge topology allows the amplifier to drive a speaker differentially, where the voltage applied across the speaker is the difference between the two switching outputs. This arrangement increases usable output-voltage swing for a given supply. The MP7731 is a second-generation fully integrated MPS audio amplifier, combining the switching output stage, protection functions, and control features in one 20-TSSOPF-EP device.
Typical uses include portable speakers, consumer audio equipment, soundbars, multimedia systems, and other mono speaker drives operating from a 12V-class supply. It is particularly suitable where compact solution size is important and a bridged Class-D output provides an efficient way to deliver several watts to tens of watts of audio power.
Designers should follow the manufacturer layout and filtering guidance, including correct inductor placement and the specified start winding orientation. Component values, thermal performance, output-filter selection, and speaker loading must be verified against the manufacturer datasheet before production release. The exposed-pad package also requires careful PCB thermal design.
This product page consolidates the verified manufacturer features, distributor package information, operating limits, and same-family alternatives with practical selection and layout guidance. It distinguishes verified facts from fields that still require manufacturer confirmation, helping engineers evaluate the MP7731DF-LF-Z before requesting an engineering quotation.
Mga alternatibo na pwedeng ilagay na MP7731DF-LF-Z — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
MP7731DF-LF
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
MP7731DF-Z
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
MP7731DF
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
MP7731DF-LF-Z Mga Pinakamataas na Rating at Electrical Characteristics
| Product Type | Mono Class-D audio amplifier |
| Output Power | 5W to 30W |
| Maximum Output Power | 30W |
| Volte ng Pagbibigay | 9.5V to 18V |
| Output Kumpigurasyon | Bridged mono full-bridge |
| Number of Audio Channels | 1 channel |
| Integrated Power MOSFET Resistance | 180mΩ |
| Short-Circuit Protection | Integrated |
| Startup and Shutdown Pop Elimination | Integrated |
| Mute and Standby Modes | Supported |
| Temperature na Operasyon | -40°C to +85°C |
| Packhaging | 20-pin TSSOPF-EP |
| Uri ng Pagpapasok | Surface mount |
| Tindminan RoHS | RoHS compliant |
| Amplifier Topology | Class-D |
| Functional Family | MPS second-generation fully integrated audio amplifier |
Gabay sa Pin Configuration ng MP7731DF-LF-Z 20-pin tssopf-ep
Pin configuration para sa MP7731DF-LF-Z (20-pin tssopf-ep package). Ang analog component na ito ay may input, output, at power supply pins. Sumangguni sa datasheet ng manufacturer para sa offset null, compensation, at enable pin configurations. Perpekto para sa signal conditioning at amplifier circuits.
Wala ng detalyadong pinout data na magagamit para sa MP7731DF-LF-Z.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
MP7731DF-LF-Z ay nararapat para sa 6 aplikasyons: Portable Mono Speaker, Compact Audio Power Module, Consumer Speaker Amplifier, Multimedia Speaker Drive, Industrial Audio Module, Soundbar Subwoofer Channel.
Portable Mono Speaker
The MP7731DF-LF-Z fits portable mono-speaker designs requiring as much as 30W from a 9.5V-to-18V supply. Its integrated 180mΩ power MOSFETs reduce the external output-stage size, while startup and shutdown pop elimination helps suppress audible transients during power changes. The full-bridge topology drives the speaker differentially, increasing usable voltage swing compared with a conventional single-ended output. Designers should match the inductor network and speaker impedance to the manufacturer application guidance, and verify thermal performance in the compact enclosure before committing to the 30W maximum rating.
Inirekomenda
Compact Audio Power Module
The MP7731DF-LF-Z is suitable for a compact audio power module built around a 12V-class supply. Its verified 5W-to-30W operating range and 9.5V-to-18V supply acceptance provide flexibility across medium- and high-power speaker loads. Integrating the power MOSFETs, short-circuit protection, and pop-control functions reduces the number of external discrete components. The 20-pin TSSOPF-EP footprint still requires careful exposed-pad thermal management, supply decoupling, and compliant layout of the switching nodes to contain EMI.
Inirekomenda
Consumer Speaker Amplifier
The MP7731DF-LF-Z can drive a mono speaker in consumer audio equipment where a 5W-to-30W bridged output is required. The full-bridge output structure uses the two switching outputs differentially, which helps provide useful speaker voltage swing from an 18V maximum supply. Mute and standby support controlled operating states, while integrated short-circuit protection adds robustness. For consumer products, the enclosure must provide sufficient heat spreading around the exposed pad, and the output filtering must follow the manufacturer guidance to avoid excessive EMI.
Inirekomenda
Multimedia Speaker Drive
The MP7731DF-LF-Z is appropriate for multimedia speaker systems that require more output than a small integrated audio amplifier can provide. Its 30W maximum mono rating, integrated 180mΩ MOSFETs, and bridged topology provide a compact implementation for powered speakers and soundbar subwoofer channels. Startup and shutdown pop elimination is particularly useful when system power rails are switched during normal operation. The actual output-power rating must be checked against speaker impedance, supply voltage, thermal limits, and the manufacturer output-filter configuration rather than relying on the headline maximum alone.
Inirekomenda
Industrial Audio Module
The MP7731DF-LF-Z can serve in an industrial audio module when its 9.5V-to-18V supply, -40°C-to-+85°C rating, and integrated protection meet the environmental requirements. The mono bridged output supports speaker loads in equipment such as warning or status-audio subsystems. Short-circuit protection improves fault tolerance, while mute and standby allow the host controller to manage operating states. Engineers should verify EMC performance, thermal conditions, and any application-specific qualification separately because the supplied data does not confirm industrial or automotive certification.
Inirekomenda
Soundbar Subwoofer Channel
The MP7731DF-LF-Z is a candidate for a soundbar subwoofer channel requiring a compact, high-efficiency mono power stage. The Class-D full-bridge architecture supports up to 30W, while integrated startup and shutdown pop elimination helps manage audible transients in a system where the amplifier may switch frequently. Mute and standby modes provide additional host-control options. Implementation requires exact adherence to the manufacturer’s inductor values, winding orientation, output filter, exposed-pad layout, and thermal design; the maximum power rating is not independent of those constraints.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for MP7731DF-LF-Z — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | MP7731DF-LF | MP7731DF-Z | MP7731DF |
|---|---|---|---|---|
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Package | TSSOP-20 (EP) | TSSOP-20 (EP) - same | TSSOP-20 (EP) - same | TSSOP-20 (EP) - same |
| Product Type | Mono Class-D audio amplifier | Mono Class-D audio amplifier | Mono Class-D audio amplifier | Mono Class-D audio amplifier |
| Output Power | 5W to 30W | 5W to 30W | 5W to 30W | 5W to 30W |
| Supply Voltage | 9.5V to 18V | 9.5V to 18V | 9.5V to 18V | 9.5V to 18V |
| Output Configuration | Bridged mono full-bridge | Bridged mono full-bridge | Bridged mono full-bridge | Bridged mono full-bridge |
| Integrated Power MOSFET Resistance | 180mΩ | 180mΩ | 180mΩ | 180mΩ |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
| Protection and Control Features | Short-circuit protection, pop elimination, mute and standby | Short-circuit protection, pop elimination, mute and standby | Short-circuit protection, pop elimination, mute and standby | Short-circuit protection, pop elimination, mute and standby |
| RoHS Status | RoHS compliant | RoHS compliant | RoHS compliant | RoHS compliant |
Pangunahing mga Pagkakaiba
- Integrated protected power stage (kumpara saMP7731DF-LF)
- High mono output capability in the same package (kumpara saMP7731DF-Z)
- Control and protection integration (kumpara saMP7731DF)
Talaan ng Disenyo
Follow the manufacturer PCB layout and output-filter guidance exactly. The verified datasheet search result specifically warns that ferrite-core inductor start windings must align consistently, with every start winding oriented toward the SW pin or every start winding oriented the opposite way. Mixed winding orientation can degrade filtering, increase ripple, or produce unstable behavior. Confirm the complete pin map and component placement against the official MP7731 datasheet before layout release.
Treat the 20-pin TSSOPF-EP exposed pad as the principal thermal path. Use the manufacturer land pattern and place adequate ground-plane copper beneath and around the package to reduce thermal resistance. Validate the hottest expected enclosure condition at the highest intended supply and continuous speaker load rather than assuming that the 30W headline rating applies at ambient temperature. Exact thermal resistance, maximum junction temperature, and derating data require confirmation from the manufacturer datasheet.
Keep the switching-current loop, output inductors, and feedback routing compact, and use the specified output-filter topology to limit conducted and radiated emissions. A Class-D bridge produces fast switching edges even though its speaker output is filtered. Avoid long high-current paths and maintain a low-impedance return for the power stage. If EMI testing fails, revisit placement before changing component values, since unsupported filter substitutions can alter stability, damping, and protection behavior.
Do not substitute components or suffixes based only on the visible family name. The supplied data identifies MP7731DF-LF, MP7731DF-Z, and MP7731DF as related parts but does not provide a complete pin-by-pin comparison for every suffix. Before replacing MP7731DF-LF-Z, compare the exact ordering code, exposed-pad connection, control-pin polarity, supply limits, thermal rating, and package drawings in the manufacturer documentation.
Impormasyon ng Pagsunod sa Kautusan
RoHS compliance is explicitly stated in the verified distributor specifications. The supplied data does not establish REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this exact ordering suffix.
