放大器 IC
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MP1720DH-216-LF-Z - 2.7W Mono Class D Audio Amplifier | MPS
The Monolithic Power Systems Inc. MP1720DH-216-LF-Z is a mono Class D audio amplifier IC capable of delivering 2.7 W into a 4 Ω speaker, with a 10-MSOP-EP package. It uses a full-bridge output structure and is designed for high-efficiency audio playback with Class AB-like fidelity. The manufacturer identifies a typical efficiency of 90%, low EMI operation, selectable 1 MHz or 1.3 MHz switching frequencies, and flexible external synchronization for noise-control applications. A Class D audio amplifier is a switching power amplifier that uses pulse-width-modulated output stages rather than continuously biased linear output transistors. The MP1720 integrates 250 mΩ power MOSFETs for VIN = 3.3 V, startup and shutdown pop elimination, short-circuit protection, thermal-overload protection, and EMI-reduction circuitry. Its integrated filtering approach can eliminate the need for an output LC filter in suitable designs, helping reduce board area and simplify compact speaker-drive layouts. The MP1720 family provides five fixed gain options and supports both internally selected and externally synchronized switching frequencies. The -216-LF-Z ordering code identifies the 10-MSOP-EP package, while the -Z suffix identifies the specific variant provided by the verified distributor listing. The exposed-pad package helps remove heat from the Class D output circuitry, although layout and thermal design still determine reliable performance. Typical uses include portable speakers, compact consumer audio products, voice-enabled devices, sound bars, USB or battery-powered audio accessories, and small industrial or monitoring systems. The 2.7 W output capability is appropriate for low-impedance speakers in space-constrained products where efficiency, EMI control, and short solution size are more important than a high-power audio output stage. Designers should follow the manufacturer recommended input, output, and feedback connections, place the exposed thermal pad on a copper pour, and validate EMI behavior in the final enclosure and cable configuration. The MP1720DH-216-LF-Z is also identified as RoHS compliant by the verified component listing, while detailed lead-free, REACH, AEC-Q100, and halogen-free status require confirmation from current manufacturer documentation.
MP1720DH-3-LF-P - 2.7W Mono Class-D Amplifier | MPS
The Monolithic Power Systems MP1720DH-3-LF-P is a 2.7 W mono Class-D audio amplifier capable of delivering 2.7 W into a 4-ohm speaker. The device uses a full-bridge output structure and is packaged in a 10-pin MSOP with an exposed pad. It combines high efficiency with low electromagnetic interference and supports a 1 MHz or 1.3 MHz switching-frequency selection. A Class-D audio amplifier is a switching power amplifier whose output stage rapidly switches between the supply rails. Compared with a linear Class-AB amplifier, this approach improves power efficiency because the output transistors spend more time in the low-dissipation states. The MP1720 adds EMI-reduction circuitry intended to suppress switching-related emissions without requiring an output LC filter. The MP1720 provides five fixed-gain options, selectable according to the MP1720 ordering information, and the -3 variant identifies one of those gain configurations. Its switching frequency can be selected between 1 MHz and 1.3 MHz using a control pin or synchronized to an external clock source. These features support compact speaker designs where radiated emissions, audible artifacts, and supply-rail noise must be controlled simultaneously. Internally, the full-bridge topology develops a differential speaker drive, removing the need for a DC-blocking output capacitor when the amplifier operates in Bridge-Tied-Load configuration. Short-circuit and thermal-overload protection are specified for the device. The exposed pad provides a thermal path from the amplifier to the PCB, making copper-pour area and thermal via layout important during continuous high-power playback. Typical uses include portable speakers, consumer audio accessories, voice-enabled devices, sound bars, and compact Bluetooth speaker systems. It is particularly suitable where a 4-ohm load and moderate output power are required without introducing the heat and idle power associated with a Class-AB output stage. An external input coupling, output filtering, and speaker interface may still be required according to system-level EMI and safety requirements. Designers should verify the -3 gain setting against the source impedance and preamp architecture, reserve sufficient input and output capacitors close to the device, and connect the exposed pad to a low-impedance ground plane. When radiated-emission testing fails, switching-frequency adjustment or synchronization should be evaluated before adding an output filter. This page combines the verified distributor identity, the manufacturer MP1720 family information, package-level comparison data, same-family alternatives, and practical Class-D layout guidance. It is intended to help engineers identify sourcing, electrical-fit, and layout implications beyond the basic distributor listing.
MP1720DH-9-LF-Z - 2.7W Mono Class-D Amplifier | MPS
The Monolithic Power Systems MP1720DH-9-LF-Z is a 2.7 W mono Class-D audio amplifier with a 2.5 V to 5.5 V supply range, 90% typical efficiency, and a 10-MSOP exposed-pad package. It uses a full-bridge output structure to drive a 4 Ω speaker while combining Class-D efficiency with Class-AB-like audio fidelity. A Class-D audio amplifier is a switching power amplifier that converts a differential analog input into a high-frequency bridge output. Within the semiconductor hierarchy, it belongs to the Class-D amplifier family, audio amplifier ICs, analog and mixed-signal integrated circuits, and broader power-management and signal-processing systems. Its full-bridge output eliminates the need for a speaker-output coupling capacitor when the supported drive conditions are met. The MP1720 family provides selectable 1 MHz or 1.3 MHz switching frequencies and can be synchronized to an external clock source. Its integrated 250 mΩ power MOSFETs reduce external component count, while startup and shutdown pop elimination improves listening experience. The -9 suffix identifies the family's fixed-gain ordering option. Short-circuit and thermal-overload protection support robust operation in compact audio products. The MP1720DH-9-LF-Z can deliver 2.7 W into a 4 Ω speaker. A listed source also reports 2.78 W output power, reflecting a rounded or differently stated test condition. Its 20 kHz bandwidth and low-EMI design make it suitable for audio products requiring compactness and reduced filter requirements, although actual distortion, thermal performance, and output power must be checked against the manufacturer's test conditions. Typical uses include portable speakers, consumer audio accessories, compact soundbars, call-system speakers, and other low-voltage mono audio loads. The 10-MSOP exposed-pad package requires careful PCB layout for heat transfer, and the exposed pad must be connected to ground according to the manufacturer's land pattern and datasheet instructions. A key design consideration is the relationship between supply voltage, speaker impedance, and heat dissipation. Although Class-D topology improves efficiency, output-stage losses still become heat in the exposed pad. Place input, output, ground, and decoupling connections for low-loop-area routing, while using the recommended switching frequency to balance EMI, filtering, and thermal performance. This page combines manufacturer specifications, distributor availability, family-level drop-in alternatives, comparison data, and practical layout guidance. It distinguishes verified parameters from unavailable pricing, lead-time, and detailed pin-mapping information rather than filling gaps with unverified assumptions.
MP1720DQ-216-LF-P - 2.7W Mono Class-D Amplifier | MPS
Monolithic Power Systems MP1720DQ-216-LF-P is a 2.7 W mono Class-D audio amplifier with a full-bridge output, capable of delivering 2.7 W into a 4 Ω speaker while providing approximately 90% efficiency in a 10-QFN (3 x 3 mm) package. The amplifier integrates 250 mΩ power MOSFETs at VIN = 3.3 V and includes startup and shutdown pop elimination, short-circuit protection, and low-EMI operation. A Class-D amplifier is a switching audio-output stage whose transistor network continuously drives the speaker load. Its class hierarchy is Class-D amplifier → audio power amplifier → amplifier IC → analog and power-management semiconductor. Unlike a conventional linear Class-AB output stage, the MP1720 converts supply energy into audio output more efficiently, reducing heat and allowing a compact solution for portable and embedded speakers. The verified manufacturer information identifies the MP1720 family as a high-efficiency, low-EMI Class-D audio amplifier. Its full-bridge topology supports a 2.7 W output into 4 Ω, while the stated 90% efficiency helps lower power consumption and board-space requirements. Integrated 250 mΩ MOSFETs at a 3.3 V supply reduce the need for external output power devices, and the available protection and pop-elimination features support practical speaker interfaces. The MP1720DQ-216-LF-P is identified by distributors as a one-channel mono Class-D amplifier in a 10-QFN package measuring 3 x 3 mm. A QFN package places leadless terminals around the perimeter and can use an exposed thermal pad. Its small footprint is particularly useful where PCB area is constrained, although correct land-pattern design, exposed-pad soldering, thermal management, and input/output filtering remain essential. Typical uses include compact speaker drivers in portable consumer equipment, personal audio products, mobile accessories, embedded control systems, and small industrial or automotive accessories where a 2.7 W mono output is sufficient. The BTL full-bridge output allows the amplifier to drive a speaker without a conventional output coupling capacitor when configured according to the manufacturer recommendations. The exact input filter, gain-setting method, output-filter requirements, and maximum supply voltage must be confirmed from the manufacturer datasheet before layout. For implementation, use the manufacturer-recommended input and output filtering network, place the amplifier close to the speaker connection, and provide adequate exposed-pad copper for thermal dissipation. EMI performance depends on correct grounding, short output routing, controlled input impedance, and proper filter placement. Verify speaker impedance and power limits during prototype testing because an incorrect load or filter implementation can increase distortion, heat, or radiated emissions. This product page consolidates verified manufacturer and distributor information for the MP1720DQ-216-LF-P, adds practical engineering guidance, and explicitly separates confirmed facts from parameters that still require datasheet confirmation. It also documents the absence of a verified, pin-compatible substitute rather than presenting unverified cross-brand parts as drop-in replacements.
MP1720DQ-216-LF-Z - 2.7W Mono Class-D Amplifier | MPS
Monolithic Power Systems MP1720DQ-216-LF-Z is a 2.7 W mono Class-D audio amplifier with a 2.5 V to 5.5 V supply range and 90% efficiency, housed in a 10-QFN 3 mm by 3 mm package with exposed pad. It uses a full-bridge output structure to drive a 4 ohm speaker and combines Class-D efficiency with Class-AB-like audio fidelity. A Class-D audio amplifier is a switching power amplifier whose output MOSFETs rapidly alternate between fully enhanced and off states. This approach reduces output-stage dissipation compared with a linear Class-AB amplifier. The MP1720 belongs to the broader audio amplifier IC, analog amplifier, signal-conditioning IC, and power management semiconductor hierarchies. It is intended for compact speaker systems operating from low-voltage supplies. Key features include 2.7 W output into a 4 ohm speaker, up to 90% efficiency, integrated 250 milliohm power MOSFETs when operated from a 3.3 V supply, and a 20 kHz bandwidth. Startup and shutdown pop elimination, short-circuit protection, and thermal protection are integrated. These protections and features are intended to simplify portable audio designs while preserving a small package footprint. The MP1720's full-bridge topology produces a differential output across the speaker terminals. This architecture allows efficient delivery to a 4 ohm load without requiring a conventional Class-AB output stage. The specified 2.5 V to 5.5 V operating range supports supply systems built around lithium-cell, portable-device, and low-voltage USB-related rails, although system-level compatibility must include inrush, peak-current, and USB source-current requirements. Typical uses include compact Bluetooth speakers, portable speakers, soundbars, consumer audio accessories, voice-assistant speakers, and other low-voltage audio products. The 3 mm by 3 mm QFN package is particularly useful where PCB area is constrained, while its exposed pad requires careful thermal design and PCB-layout attention. Designers should place the input, supply, output, and decoupling components as close as practical to the device, verify the speaker impedance and power requirements, and provide adequate thermal coupling through the exposed pad. A Class-D amplifier does not reproduce DC, and correct input grounding and output filtering remain essential for low-noise operation. The available source data does not provide a complete verified pin map, so the package pinout is not asserted here. This page consolidates the verified manufacturer and distributor information, distinguishes confirmed specifications from unavailable parameters, and provides practical application and design guidance beyond the basic ordering data. Pricing, lead time, detailed pin mapping, and verified drop-in substitutes remain subject to current distributor confirmation.
MP1720DQ-3-LF-P - 2.7W Class-D Mono Amplifier | MPS
The Monolithic Power Systems MP1720DQ-3-LF-P is a 2.7 W mono Class-D audio amplifier that uses a full-bridge output structure to drive a 4 Ω speaker. The verified manufacturer and distributor results identify a surface-mount 10-QFN package measuring 3 mm by 3 mm, along with integrated 250 mΩ power MOSFETs operated from a 3.3 V supply. The device combines switching-class efficiency with the high-fidelity character associated by the manufacturer with a Class AB amplifier. A Class-D audio amplifier is a power-management semiconductor that converts an analog audio input into a high-frequency switching output capable of driving a loudspeaker efficiently. Within the broader hierarchy, it is an audio amplifier IC, a power-management IC, and a semiconductor. Unlike a conventional linear Class AB output stage, the MP1720 uses a switching full-bridge architecture, reducing the amount of power dissipated as heat while delivering audio energy to the speaker. The MP1720 integrates the 250 mΩ power MOSFETs, startup and shutdown pop-elimination circuitry, and short-circuit protection. According to the Monolithic Power Systems MP1720 product result, these functions allow a compact audio-output solution with reduced external component count. The stated 90% efficiency is especially relevant in portable audio products where amplifier dissipation directly affects battery life and enclosure temperature. The exact efficiency conditions, thermal ratings, and protection thresholds require confirmation from the manufacturer datasheet. The full-bridge output can drive a single 4 Ω speaker at up to 2.7 W. Because the output is bridge-tied, the speaker receives the differential voltage generated between the two output nodes. Designers must keep the BTL speaker wiring isolated from system ground and should use a speaker return path that satisfies the requirements of the application. Feedback and input filtering details should be implemented with the component values and topology shown in the official MP1720 documentation. Typical uses include compact Bluetooth speakers, portable speakers, sound bars, consumer audio modules, and other low-voltage embedded audio products. The 3.3 V supply and 2.7 W output rating align well with battery-powered equipment whose speaker impedance is 4 Ω. A system requiring higher output power, a different supply voltage, stereo operation, or a different pinout should not be treated as a direct replacement without a complete electrical comparison. The primary design considerations are exposed-pad layout, input and output filtering, speaker return routing, thermal performance, and startup behavior. Place the device close to the speaker connector to minimize switching-node trace length, and provide a continuous low-impedance ground plane around the exposed pad. Decoupling and passive-component values must be confirmed against the official datasheet and typical application circuit. This page separates verified MP1720DQ-3-LF-P facts from unverified details. It combines the manufacturer product information, distributor packaging data, replacement-search findings, and engineering guidance without inventing pin assignments, thermal figures, compliance declarations, or prices that were not present in the supplied source data.
MP1720DQ-3-LF-Z - 2.7W Mono Class-D Audio Amplifier
Monolithic Power Systems, Inc. MP1720DQ-3-LF-Z is a 2.7 W mono Class-D audio amplifier with a full-bridge output, a 90% efficiency rating, and a 10-QFN (3x3 mm) surface-mount package. The device is designed to drive a 4-ohm speaker while combining Class-D efficiency with Class-AB-like audio fidelity. Its low-EMI architecture, integrated protection, and compact footprint support portable audio, consumer audio, and compact speaker applications. A Class-D audio amplifier is a switching-based amplifier that converts a low-level analog input into a high-frequency pulse-width-modulated output. Its full-bridge output stage applies differential voltage to the speaker, increasing usable output voltage and efficiency. In the broader hierarchy, this MP1720 belongs to the amplifier-IC category within integrated circuits and provides a more efficient speaker-drive solution than a conventional linear Class-AB output stage. The MP1720 delivers up to 2.7 W into a 4-ohm speaker while maintaining an efficiency of approximately 90%. Its integrated power MOSFETs have an on-resistance of 250 milliohms when operated from a 3.3 V supply, reducing conduction loss in compact systems. The low-EMI design is intended to simplify coexistence with sensitive analog, radio, or digital circuitry. Startup and shutdown pop-elimination circuitry further improves the listening experience during power transitions. The integrated feature set includes short-circuit protection, thermal protection, and depop circuitry. These protections are important in portable and consumer products where a speaker cable fault, restricted enclosure, or sudden power transition can otherwise damage the amplifier or produce unwanted noise. The 3x3 mm QFN package also minimizes board area, although its exposed thermal construction requires careful layout and adequate copper for heat transfer. Typical uses include portable speakers, Bluetooth speaker accessories, compact consumer audio products, USB-powered audio systems, and small alarm or notification devices. In a 4-ohm speaker design, the MP1720 provides substantially more output power than a conventional low-power analog headphone amplifier. Its 90% efficiency also reduces the power drawn from a battery or USB supply compared with a linear amplifier operating at a similar output level. PCB design should preserve the manufacturer’s recommended input, supply, and filtering networks, provide a low-impedance ground path, and maintain adequate thermal copper beneath the package. Because Class-D output stages contain high-frequency switching energy, output routing should remain short and isolated from sensitive input or clock signals. Verify the loudspeaker load, supply limits, thermal conditions, and output-filter requirements before production release. This product record combines the verified manufacturer specifications, distributor listings, lifecycle information, package data, and available replacement information. It also identifies where pricing and detailed pin-level data were not available, preventing unverified assumptions from being presented as guaranteed design values.
MP1740EC-LF-P - 3W Mono Class-D Amplifier | MPS
Monolithic Power Systems MP1740EC-LF-P is a 3 W high-efficiency mono Class-D audio amplifier with a 91% efficiency rating and a 9-WLCSP package measuring 1.55 mm by 1.55 mm. It uses a full-bridge output structure to drive 4-ohm speakers and provides 2 V/V gain. The device is designed for compact audio systems where high output efficiency, small size, and direct speaker drive are important. A Class-D audio amplifier is a switching power amplifier that uses a full-bridge H-bridge output to deliver energy to a speaker. Compared with a linear Class-AB amplifier, its Class-D topology can reduce amplifier power loss and improve operating efficiency. The MP1740 combines that efficiency with the audio fidelity associated with Class-AB operation, while its 2 V/V default gain can be changed by selecting different input resistors. The principal verified features include 3 W output into a 4-ohm speaker, 91% efficiency, mono Class-D operation, a full-bridge output, and a 1.55 mm by 1.55 mm WLCSP package. The manufacturer page identifies the MP1740 as a low-power mono BTL Class-D audio amplifier and identifies EV1740EC-00A as its evaluation board. These characteristics make the device suitable for portable speakers, compact consumer audio, and embedded audio products. Because the MP1740 uses a BTL output, the speaker connections are not referenced to ground in the same way as a conventional single-ended amplifier. PCB layout, speaker impedance, input filtering, supply decoupling, and thermal performance must be reviewed against the manufacturer documentation. The 1.55 mm by 1.55 mm WLCSP also requires assembly capability and careful land-pattern design. Typical designs place the amplifier near the speaker connector, connect the differential Class-D outputs to the speaker, and bypass the supply close to the device. The amplifier's 91% efficiency means less power is dissipated internally than with a comparable linear amplifier at the same stated operating point, but speaker loading and supply conditions still determine actual thermal and acoustic performance. The MP1740 is therefore most appropriate when a compact, efficient, mono speaker drive solution is required. This page combines the verified manufacturer and distributor descriptions with practical design guidance, comparison fields, procurement context, and application-oriented engineering information. It does not infer unverified electrical limits, pin names, pricing values, lifecycle claims, or compliance declarations.
MP1740EC-LF-Z - 3W Mono Class-D Amplifier | MPS
Monolithic Power Systems MP1740EC-LF-Z is a 3 W high-efficiency mono Class-D audio amplifier IC with a full-bridge H-bridge output, 9-WLCSP package measuring 1.55 mm by 1.55 mm, and support for driving a 4 ohm speaker. It delivers Class-AB-like audio fidelity with reported efficiency of 91%, making it suitable for compact, battery-powered audio products where energy efficiency and board area are important. The verified distributor data identifies it as a one-channel Class-D amplifier rated for 3.62 W in one distributor listing and 3 W in the product description. A Class-D audio amplifier is a switching amplifier that uses an H-bridge to deliver energy to a speaker with high efficiency compared with a conventional linear Class-AB amplifier. The MP1740 is intended for mono audio signal paths where a small speaker load must be driven from a compact integrated circuit. Its switching output stage reduces wasted power during audio playback, which is particularly useful in portable speakers, personal audio products, and compact consumer equipment. The 9-WLCSP footprint also supports dense PCB layouts when component area is limited. The main verified parameters are 3 W output power into a 4 ohm speaker, mono Class-D operation, a full-bridge H-bridge architecture, 91% efficiency, and a 1.55 mm by 1.55 mm 9-WLCSP package. The verified sources also identify the part as a one-channel audio amplifier IC. Detailed electrical limits, gain settings, input impedance, output configuration, protection behavior, thermal limits, and pin assignments are not included in the supplied data and must be confirmed from the manufacturer datasheet before design release. The device is best suited to portable speakers, compact Bluetooth speaker systems, small consumer audio products, and low-power mono audio nodes. In these applications, the amplifier converts an analog audio signal into a full-bridge Class-D output for the connected speaker. The verified 91% efficiency figure indicates a favorable power-conversion characteristic, but actual battery life depends on the complete system, load impedance, output level, thermal environment, and PCB layout. Designers should pay particular attention to the tiny WLCSP footprint, speaker connection, input routing, bypass capacitors, power-supply stability, and thermal performance. Because the available evidence does not provide a complete pinout or application-circuit parameters, consult the official MP1740EC datasheet for pin names, exposed-pad requirements, recommended inductors or capacitors, input configuration, output filtering, and maximum operating conditions. This product page synthesizes verified distributor and manufacturer-linked descriptions with application guidance and identifies where additional datasheet data is required. The MP1740EC-LF-Z should not be treated as a complete electrical substitute until package, pin, gain, protection, and thermal compatibility have been independently checked.
MP7720DP-LF - 20W Mono Class-D Audio Amplifier | MPS
Monolithic Power Systems MP7720DP-LF is a 20 W mono Class-D audio amplifier with a 9.5 V to 24 V supply range, single-ended output, and an 8-pin PDIP package. It integrates 180 mΩ power MOSFETs, startup and shutdown pop-elimination circuitry, short-circuit protection, and mute or standby control to reduce external circuitry and board area. A Class-D audio amplifier is a switching power amplifier in an audio-signal hierarchy. Its output-stage transistors operate mainly in a switching state, allowing efficient power delivery compared with a traditional linear amplifier. The MP7720 uses a single-ended output structure intended for driving a mono speaker load and integrating the power stage, control functions, and protection features into one device. The principal verified ratings are 20 W output power, a 9.5 V minimum supply voltage, a 24 V maximum supply voltage, and an operating temperature range of -40 °C to 85 °C. The package is a lead-free plastic 8-DIP package, also identified in the supplied data as PDIP-8. The verified distributor listing describes the product as a 20 W Class-D mono single-ended audio amplifier. The integrated 180 mΩ power MOSFETs are intended to improve amplifier efficiency and reduce solution size. Startup and shutdown pop-elimination circuitry helps reduce audible clicks during state changes, while short-circuit protection adds a basic safeguard for the output stage. Mute and standby functionality supports controlled audio muting or power management, although exact timing, enable thresholds, and output-current limits require confirmation in the manufacturer datasheet. Typical applications include compact mono speakers, portable audio equipment, consumer audio products, small powered speaker systems, and auxiliary audio modules. The 9.5 V to 24 V supply range supports systems using higher-voltage audio rails, while the through-hole PDIP package can simplify prototype assembly and manual installation. Designers must still verify speaker impedance, power derating, thermal conditions, supply decoupling, and output filtering against the manufacturer data before production use. This product summary combines the verified manufacturer description, distributor specifications, package information, and engineering notes to support initial design selection. It does not replace the complete MP7720 datasheet, particularly for electrical limits, pin functions, thermal resistance, switching behavior, and application-specific compensation.
MP7720DS-LF - 20W Mono Class-D Audio Amplifier | MPS
Monolithic Power Systems MP7720DS-LF is a mono 20W Class-D audio amplifier operating from 9.5V to 24V in an 8-pin SOIC package. It uses a single-ended output structure and integrates 180mΩ power MOSFETs, startup and shutdown pop-elimination circuitry, short-circuit protection, and mute or standby control. The -40°C to +85°C operating range and integrated protection suit compact audio systems where component count and board area must be controlled. A Class-D audio amplifier is a switching power amplifier that delivers audio through rapidly switched output transistors. Within the amplifier hierarchy, the MP7720 is an integrated audio power amplifier and power-management IC rather than a low-power signal amplifier. Its efficiency-oriented Class-D topology can deliver substantial audio output while reducing heat relative to a linear amplifier when operated within the manufacturer’s specified electrical and thermal limits. The MP7720’s primary verified specifications are 20W output power, a 9.5V to 24V supply range, and one mono channel. Its integrated 180mΩ power MOSFETs reduce the need for external output transistors. Additional functions include startup and shutdown pop elimination, short-circuit protection, and mute or standby operation. These features make the device relevant to mono speakers, compact consumer audio products, powered speakers, sound bars, and auxiliary audio modules. Technically, the single-ended output topology supports a compact implementation without requiring a full-bridge output stage. Short-circuit protection improves resilience when a speaker wiring fault occurs, while mute and standby provide external control for quiet power management. The manufacturer identifies the MP7720 as a second-generation fully integrated audio amplifier, emphasizing its integration of the power stage and control functions. Typical applications include powered speakers, compact stereo systems using one channel per module, sound bars, portable or dock-based speakers, and industrial audio products with a single speaker. The 24V upper supply limit is a key design constraint; higher-voltage amplifier modules are not automatically suitable replacements. Speaker impedance, output-filter selection, supply decoupling, thermal performance, and control sequencing must be checked against the manufacturer datasheet. For PCB design, keep input, supply, output, and ground paths compact and route power-current loops with low resistance. The switching output requires an appropriate EMI-conscious layout and the prescribed LC output filtering. Verify thermal rise at worst-case supply, load, and ambient conditions because a stated 20W capability does not remove board-level heat dissipation requirements. This page consolidates verified manufacturer and distributor information, pricing availability, replacement evidence, and practical implementation guidance for engineers evaluating the MP7720DS-LF.
MP7720DS-LF-Z - 20W Mono Class-D Amplifier | MPS
The Monolithic Power Systems MP7720DS-LF-Z is a mono 20 W Class-D audio amplifier operating from 9.5 V to 24 V, delivering 20 W into 4 ohms with 93% efficiency in an 8-SOIC package. It integrates 180 mΩ power MOSFETs, startup and shutdown pop elimination, short-circuit protection, mute/standby control, thermal protection, and shutdown functionality. The single-ended output structure is designed to reduce external component count and solution size. A Class-D audio amplifier is a switching power amplifier that uses pulse-width modulation to drive an output stage efficiently. The MP7720 belongs to the Class-D amplifier, audio power-amplifier, integrated audio-amplifier, and power-management semiconductor hierarchy. Its integrated MOSFET output stage allows a compact speaker-driver solution while maintaining high conversion efficiency. The verified specifications identify a 9.5 V to 24 V supply range, 20 W output at 4 ohms, 60 dB gain-related performance, 1.5 mA quiescent current, and a -40°C to +85°C operating range. The amplifier is specified for mono audio, with Class-D topology and single-ended output. Protection and control features reduce the need for additional external circuitry in suitable speaker applications. Typical uses include compact speaker systems, portable audio products, audio accessory designs, industrial sound equipment, USB-powered audio projects, and small consumer audio products. The 20 W rating is most relevant when the speaker impedance and supply conditions are verified against the manufacturer datasheet. Efficiency and thermal performance must be considered together because a Class-D amplifier can still dissipate meaningful heat at high output power. Designers should place the input, supply, and output decoupling capacitors according to the manufacturer reference circuit, keep the high-current output loop compact, and provide adequate copper for thermal dissipation. The output should be checked for correct startup and shutdown sequencing to minimize audible pops. This page consolidates verified distributor data, manufacturer information, cross-reference results, and application guidance for the MP7720DS-LF-Z.
MP7722DF-LF-Z - Stereo 2x20W Class-D Amplifier
The Monolithic Power Systems MP7722DF-LF-Z is a stereo, single-ended Class-D audio amplifier delivering 2 x 20 W into 4 ohm speakers from a 9.5 V to 24 V supply. It uses a TSSOP-20 package and integrates 180 mOhm power MOSFETs, startup and shutdown pop elimination, short-circuit protection, and mute or standby control. The device is intended for compact, high-efficiency audio systems where two amplified speaker outputs are required without external output transistors. 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.
MP7740DN-LF-Z - 15W Mono Class-D Audio Amplifier | MPS
The Monolithic Power Systems MP7740DN-LF-Z is a mono 15W Class-D audio amplifier with a 9.5V to 36V supply range, integrated 250mΩ power MOSFETs, and short-circuit protection in an 8-pin SOIC package with exposed pad. It is designed to drive 4Ω speakers through a single-ended output structure while reducing board size and external power-stage complexity. A Class-D audio amplifier is a switching power amplifier that delivers audio energy through rapidly alternating output voltages. In the broader hierarchy, it is an audio amplifier, analog signal-processing IC, power-management semiconductor, and surface-mount device. Compared with a conventional linear amplifier, the MP7740 architecture is intended to reduce wasted power and heat while retaining the signal path required for compact speaker systems. The verified manufacturer information identifies 15W output power, 250mΩ integrated power MOSFETs, startup and shutdown pop-elimination circuitry, and short-circuit protection. The 8-SOICE package and integrated power stage can simplify a mono speaker amplifier implementation compared with a discrete MOSFET output stage. A 4Ω speaker load is explicitly supported by the single-ended output structure, while the exact thermal and layout limits must be taken from the manufacturer datasheet. The MP7740 is positioned for portable or compact audio products where speaker drive current, board area, and startup behavior matter. It can be used in consumer speaker designs, portable audio equipment, soundbars, and auxiliary audio modules, provided the supply voltage, speaker impedance, thermal conditions, and input signal levels match the device specifications. The absence of a verified switching-frequency value, gain setting, and exact pin-level application circuit in the supplied data prevents adding unconfirmed parameters. Designers should pay particular attention to the exposed thermal pad, copper area, supply decoupling, output filtering, and speaker-load wiring. The integrated protection circuit is useful, but it does not remove the need for correct layout and thermal management. Because the target is a single-ended mono amplifier, system-level headroom and filter selection should be evaluated together with the speaker impedance rather than treated as independent choices. This page consolidates the verified manufacturer and distributor information for MP7740DN-LF-Z, including the 15W Class-D architecture, supply range, package information, sourcing links, and engineering-focused selection guidance. It does not invent pricing, pin functions, electrical limits, or drop-in replacements that were not confirmed by the supplied records.
MP7741DQ-LF-P - 10W Mono Class-D Audio Amplifier | MPS
The Monolithic Power Systems MP7741DQ-LF-P is a 10 W mono Class-D audio amplifier with a single-ended output structure, a 9.5 V to 36 V supply range, and a surface-mount 10-QFN package. The device integrates 250 mΩ power MOSFETs, startup and shutdown pop-elimination circuitry, short-circuit protection, and thermal protection to support compact speaker-driver designs. A Class-D audio amplifier is a switching amplifier that uses transistor stages to deliver audio energy efficiently. Compared with a linear amplifier, its MOSFET output stage can reduce power dissipation and support higher output power from a compact package. The MP7741 belongs to the integrated audio-amplifier hierarchy: Class-D amplifier, audio power amplifier, speaker driver, and power-management IC. Key features include a 10 W output capability into an 8 Ω speaker, mono single-ended operation, and integrated protection functions. The manufacturer describes the amplifier as suitable for audio applications where compactness, efficiency, and reduced external discrete components are important. Its integrated 250 mΩ MOSFETs reduce the need for separate output power transistors, while the protection circuits address fault conditions that can otherwise damage an audio output stage. The MP7741 uses a Class-D topology with a single-ended output, making board integration and speaker connection practical for portable audio, consumer audio, and auxiliary speaker systems. Designers should still account for supply decoupling, amplifier enable or shutdown sequencing, speaker loading, thermal dissipation, and the inductor requirements associated with the filtering and output network specified by the manufacturer design guidance. Typical applications include compact speaker systems, portable audio products, sound bars, multimedia equipment, and auxiliary audio modules. Compared with a discrete Class-D output stage, the integrated device can reduce board area and assembly complexity. Compared with a larger multi-channel amplifier, the MP7741 is optimized for a single mono speaker channel, allowing designers to use multiple devices when stereo or multichannel amplification is required. A key design consideration is thermal management. Although the integrated structure improves efficiency, sustained high output power still requires adequate copper area and a supply path capable of delivering the required current. The manufacturer evaluation board EV7741DQ-00A is a useful reference for evaluating the MP7741 amplifier implementation. Designers should follow the manufacturer’s recommended output filtering, input, supply, and layout arrangements rather than inferring them solely from the package dimensions. This page combines the verified manufacturer product information and distributor listings with application guidance and engineering considerations. It also distinguishes verified technical facts from parameters that require confirmation in the manufacturer datasheet, helping engineers evaluate the MP7741DQ-LF-P for speaker-driver designs without relying on unverified substitute specifications.
MP7741DQ-LF-Z - 10W Mono Class D Amplifier | MPS
The Monolithic Power Systems MP7741DQ-LF-Z is a 10 W mono Class D audio amplifier with a single-ended output, integrated 250 mΩ power MOSFETs, startup and shutdown pop elimination, and short-circuit protection. It is supplied in a 10-VFDFN exposed-pad package with an indicated 3 mm by 3 mm footprint. The device targets compact audio systems requiring efficient amplification without a conventional linear output stage. A Class D audio amplifier is a switching power amplifier that uses pulse-width modulation to drive an output MOSFET bridge and reconstruct the audio waveform through filtering. Compared with linear audio amplifiers, the Class D category offers higher power-conversion efficiency and lower output-stage dissipation, making it useful for portable speakers, compact consumer equipment, and space-constrained audio products. The MP7741 uses a single-ended output structure rather than a bridge-tied load, so the speaker connection and output-filter requirements must follow the manufacturer guidance. Key verified features include 10 W mono Class D operation, integrated 250 mΩ power MOSFETs, depop circuitry for startup and shutdown, and short-circuit and thermal protection features reported by distributors. The device is specified for a -40°C to 125°C operating-temperature range. The exposed-pad package helps remove heat from the power stage, although final thermal performance depends on the PCB copper area, power dissipation, ambient temperature, and load impedance. The MP7741 is intended for analog-input audio paths where a small, efficient mono output stage is useful. Typical applications include compact speakers, portable audio products, soundbars, consumer audio modules, and auxiliary speaker systems. Its single-ended output should be considered carefully when selecting speaker wiring, output filtering, and grounding arrangements. The manufacturer evaluation board EV7741DQ-00A provides a practical reference for evaluating the amplifier, although the supplied verified data does not provide its schematics or component values. Designers should verify the exact pin names, exposed-pad connection, recommended input and output filtering, and speaker impedance against the current manufacturer datasheet before layout release. [DATA_NEEDED: exact electrical limits, supply-voltage range, output-power conditions, efficiency, THD+N, gain settings, and recommended filter values] were not present in the supplied verified data and are intentionally not guessed. Pricing and stock status must likewise be confirmed at the time of quotation. This page combines verified manufacturer and distributor information, same-package replacement status, and application-oriented design guidance. It is intended to help engineers identify the correct amplifier class, package, thermal considerations, and sourcing questions before requesting a quote.
MP7742DF-LF-Z - 2x15W Stereo Class-D Audio Amplifier
The Monolithic Power Systems MP7742DF-LF-Z is a 2-channel stereo Class-D audio amplifier IC delivering 2 x 15 W into 4-ohm speakers in a 20-pin TSSOPF exposed-EP package. It is designed for compact, high-efficiency audio systems where integrated power MOSFETs, short-circuit protection, thermal protection, and startup/shutdown pop elimination reduce external circuitry. The verified distributor listings identify the device as an active, lead-free, RoHS3-compliant, surface-mount stereo audio amplifier. What is a Class-D audio amplifier? A Class-D amplifier is a switching power amplifier that drives a speaker through a PWM output stage rather than continuously dissipating signal power in a linear output transistor. This topology provides high efficiency and compact integration, making it part of the audio amplifier IC family and broader power-management semiconductor hierarchy. The MP7742 is intended for speaker-driving applications where low board area and integrated protection are valuable. Verified product information highlights include 15 W per channel at 4 ohms, two-channel stereo operation, Class-D output, integrated 250 mΩ power MOSFETs, startup/shutdown pop elimination, and short-circuit and thermal protection. The package is identified as 20-pin TSSOPF with an exposed pad and tape-and-reel packaging. The datasheet search result also reports a 13-page PDF, but no official manufacturer PDF URL was supplied in the verified data. Typical applications include compact stereo speakers, portable audio products, consumer audio equipment, USB or powered speaker systems, small multimedia speakers, and auxiliary audio modules. Compared with a linear audio amplifier, the switching Class-D architecture reduces wasted power in the output stage, but correct filtering, thermal design, speaker impedance, and supply decoupling remain essential. A 4-ohm load is explicitly identified for the 15 W-per-channel specification; operation below the datasheet's limits should be avoided. When designing a board around the MP7742DF-LF-Z, preserve the exposed-pad thermal path and follow the manufacturer layout guidance for power and audio traces. Place input, filter, and output-network components close to their associated pins, and use an appropriately rated speaker and power supply. The verified data does not provide the complete electrical limits, pin names, exact filter values, or recommended operating-voltage range, so those details must be confirmed in the manufacturer datasheet before production release.
MP7745DF-LF-Z - 2x20W Class-D Stereo Amplifier | MPS
The Monolithic Power Systems MP7745DF-LF-Z is a two-channel, single-ended Class-D stereo audio amplifier that delivers 20 W per channel into 4 Ω from a 9.5 V to 26 V supply. It is packaged in a 20-pin TSSOPF with an exposed pad and integrates 250 mΩ power MOSFETs. The device also provides startup and shutdown pop elimination and short-circuit protection. Its fully integrated amplifier architecture reduces board area by eliminating external output MOSFETs, while the single-ended output structure supports compact speaker-driving solutions. A Class-D audio amplifier is a switching power amplifier that uses PWM-related transistor operation to deliver audio energy efficiently compared with a conventional linear amplifier. The MP7745 belongs to the hierarchy Class-D amplifier → audio amplifier → analog power amplifier → power-management semiconductor. This category is especially useful for portable speakers, compact consumer audio equipment, and other systems where speaker output power and board area are important. Key features include 2 × 20 W stereo output, a 9.5 V to 26 V supply range, integrated 250 mΩ power MOSFETs, single-ended outputs, short-circuit protection, and startup/shutdown pop elimination. The MP7745 is intended for surface-mount designs using its exposed-pad TSSOP package. The verified distributor listing describes the MP7745DF-LF-Z as a lead-free, RoHS-compliant amplifier in a 20-TSSOPF-EP package. The MP7745’s integrated output stage simplifies the power layout, but the exposed pad still requires careful thermal design. The LC output-filter network is critical because Class-D outputs contain high-frequency switching energy. Inductor selection, capacitor placement, speaker wiring, and return-current paths should follow the manufacturer’s recommended application circuit. The evaluation board EV7745DF-01A provides a manufacturer-supported reference for evaluating the MP7745 in a stereo speaker amplifier design. Typical uses include portable Bluetooth speakers, compact stereo speakers, multimedia speaker systems, small audio consoles, and consumer products requiring two amplified speaker channels. The 2 × 20 W capability makes the part appropriate for low-impedance speakers when the supply and thermal limits are respected. Compared with a discrete Class-D design, integrated MOSFETs can reduce component count and simplify assembly, although thermal performance still depends on PCB copper area, load impedance, output waveform, and ambient temperature. For a new design, use the MP7745DF-LF-Z when a compact, integrated stereo Class-D solution is preferred over a discrete output stage. Verify the exact pinout, recommended LC filter, input coupling, supply decoupling, and exposed-pad land pattern against the manufacturer datasheet. This page combines the verified specifications, source links, application guidance, and drop-in comparison framework needed for engineering evaluation.
MP7747DQ-LF-P - 20W Mono Class D Audio Amplifier | MPS
The Monolithic Power Systems MP7747DQ-LF-P is a 20 W, single-channel, single-ended Class D audio amplifier operating from 9.5 V to 36 V in a 10-pin QFN with exposed pad package. It supports 20 W output at 24 V into a 4 ohm load, with THD+N of 0.02% at 1 W. The amplifier also provides 91% efficiency at 20 W into an 8 ohm load and low typical output noise of 103 µV. A Class D amplifier is a switching audio power amplifier whose output stage operates between active and inactive states instead of dissipating a continuous quiescent current through linear output transistors. This improves conversion efficiency while PWM-based switching creates a modulated output waveform that must pass through a speaker-network filter before driving a conventional speaker. The MP7747 uses MPS variable-frequency topology to provide high fidelity, fast response, and operation from a single power supply. The MP7747 integrates 250 mΩ power MOSFETs, start-up and shutdown pop elimination, and short-circuit protection. Its switching frequency can reach 1 MHz, reducing the size and propagation delay of the output LC filter. The mono, single-ended architecture suits compact speaker systems that need substantial output from a relatively compact amplifier module. Key application considerations include output-current capability into 4 ohm and 8 ohm speakers, supply decoupling, exposed-pad thermal management, filter selection, and correct grounding. The integrated protections simplify short-circuit handling, but designers must still verify maximum output power, copper temperature, and speaker impedance under worst-case supply and thermal conditions. The MP7747 is suitable for portable speakers, multimedia speakers, compact consumer audio, industrial audio modules, and powered speaker subsystems where a mono 20 W Class D amplifier is sufficient. The official Monolithic Power Systems product page identifies the MP7747 as a fully integrated Class D audio amplifier with a single-ended output structure.
MP7747DQ-LF-Z - 20W Mono Class-D Audio Amplifier | MPS
Monolithic Power Systems MP7747DQ-LF-Z is a mono 20 W Class-D audio amplifier with a single-ended output stage, integrated 250 mΩ power MOSFETs, startup/shutdown pop elimination, short-circuit protection, and thermal protection. The device is supplied in a 10-QFN surface-mount package and is intended for compact speaker-driving systems. The verified distributor data identifies it as a one-channel Class-D amplifier, while the manufacturer describes the MP7747 family as capable of delivering 20 W into a 4 Ω speaker. A Class-D audio amplifier is a switching power amplifier that uses pulse-width-modulated output signals to drive a loudspeaker through a filtering network. Compared with a linear amplifier, the Class-D topology can provide higher efficiency and lower heat dissipation in portable or space-constrained equipment. The MP7747 integrates the power devices and protection functions into one package, reducing external component count and simplifying implementation compared with a discrete switching output stage. The MP7747 is specifically positioned for mono audio reproduction, including portable speakers, compact consumer audio products, and small embedded audio systems. Its single-ended output architecture is intended to provide a straightforward connection to a speaker load after the required output filtering and decoupling. The verified product information does not provide the complete pin names, electrical limits, gain settings, or recommended PCB land pattern, so those details must be confirmed against the manufacturer datasheet before layout or firmware integration. The integrated protection functions are important for portable equipment because they help manage startup behavior, shutdown behavior, overload conditions, and thermal stress. Pop elimination can reduce audible transients during startup or shutdown, while short-circuit protection helps protect the amplifier when the speaker connection is abnormal. These functions do not remove the need to observe the datasheet’s operating limits and speaker wiring requirements. For layout, the MP7747 should be placed according to the manufacturer’s recommended land pattern and with short, low-inductance connections between the amplifier, input network, output filter, supply decoupling, and speaker load. Power and ground paths require particular care because switching audio amplifiers can produce high transient currents. The exact input capacitor, output filter, supply voltage, speaker impedance, and thermal limits are not included in the verified data and require datasheet confirmation. This page combines the verified distributor and manufacturer descriptions for the MP7747DQ-LF-Z with practical selection guidance. It is intended to help engineers identify whether the part’s 20 W mono Class-D capability and integrated protection functions fit a target speaker system, while clearly separating verified information from parameters that still require confirmation from the manufacturer datasheet.
MP7748DF-LF-Z - 50W Class-D Audio Amplifier | MPS
The Monolithic Power Systems MP7748DF-LF-Z is a fully integrated Class-D audio amplifier that delivers 20W per channel into a 4Ω load in stereo single-ended operation or 50W into a 6Ω load in mono bridge-tied-load operation at 24V VDD. The device is supplied in a 28-pin TSSOP-EP surface-mount package and includes integrated 250mΩ power MOSFETs. A Class-D audio amplifier is a switching amplifier that uses pulse-width modulation to deliver speaker power efficiently while reproducing the Class A/B-like audio fidelity described by the manufacturer. The MP7748 belongs to the audio-amplifier, analog-output, power-management-IC, and semiconductor hierarchies. Its switching output stage reduces dissipation compared with a linear amplifier, while integrated protection and control circuitry simplify portable and compact audio designs. Verified performance features include 20W per channel into 4Ω in stereo single-ended mode, 50W into 6Ω in mono bridge-tied-load mode at 24V VDD, and THD+N of 1% at 1W into an 8Ω load in single-ended configuration. The datasheet snippet reports 103µV noise in single-ended configuration. Integrated features include startup and shutdown pop elimination, short-circuit protection, and 4.5A short-circuit current limiting, with automatic restart after the fault clears. The amplifier supports either two stereo single-ended outputs or one mono bridge-tied-load output. This flexibility permits the same device family to address stereo speakers, compact subwoofers, multimedia speakers, consumer audio equipment, and powered portable equipment. At 24V VDD, its available output-power capability is substantially higher than devices rated only for low-voltage portable applications. Output topology is the principal design consideration. Single-ended mode drives each speaker terminal relative to ground, whereas bridge-tied-load mode uses both output channels so the speaker sees the differential voltage. The latter increases available voltage swing and supports the 50W mono result, but it must not be used with a speaker connected from either output to ground. Verify pin functions, exposed-pad layout, decoupling, thermal performance, and output topology against the manufacturer datasheet before layout release. This product page consolidates verified manufacturer specifications, distributor listing data, package information, and practical selection guidance. Pricing, detailed electrical limits, full pin naming, compliance declarations, and lifecycle status remain dependent on current authorized-source data because those values were not established by the supplied search extract.
MP7748SGF - 2x30W Stereo Class D Amplifier | Monolithic Power Systems Inc.
The Monolithic Power Systems Inc. MP7748SGF is a Class D audio power amplifier rated for 2 x 30 W stereo single-ended output or 60 W mono bridge-tied-load output. The verified manufacturer search material identifies a 28-pin TSSOP exposed-pad package and an integrated 200 mΩ power-MOSFET output stage. It is designed for compact, high-efficiency speaker-drive solutions where analog Class A/B fidelity is desired with Class D operating efficiency. A Class D audio amplifier is a switching power amplifier that delivers energy to speakers through a continuously switching output stage. Compared with a linear Class A/B amplifier, its practical advantage is lower output-stage dissipation and higher efficiency, although filtering is still required to remove switching-frequency energy. In stereo mode, the MP7748SGF uses two independent single-ended speaker outputs; in mono mode, its outputs can be combined in bridge-tied-load configuration to double the voltage swing delivered to one speaker while avoiding a DC offset across the speaker. Key verified features include integrated 200 mΩ power MOSFETs, startup and shutdown pop-elimination circuitry, and short-circuit protection. The manufacturer material describes a proprietary variable-frequency topology intended to provide high fidelity comparable to Class A/B amplification. Under 24 V VDD, the manufacturer material states capability for 30 W per channel into a 4 Ω load in single-ended operation and 60 W into an 8 Ω speaker in bridge-tied-load operation. The exposed pad supports heat transfer from the power stage, but thermal performance still depends on PCB copper, layer count, airflow, load duration, and adjacent heat sources. Typical uses include consumer speakers, multimedia audio, compact stereo systems, sound bars, portable powered speakers, and mono subwoofer or full-range speaker designs. The MP7748SGF is appropriate when local analog amplification is preferred and a Class D efficiency advantage is useful, but it may not suit systems that require a digital input because the verified material identifies an analog-input family. For layout, follow the manufacturer datasheet connection and thermal recommendations exactly. Keep the exposed-pad thermal path unobstructed, provide adequate input and output filtering, and account for switching-node layout and ground-return control. Do not assume a generic 28-pin footprint or replace the amplifier without checking exposed-pad geometry, pin names, thermal requirements, and load compatibility. This page consolidates manufacturer specifications, distributor listings, cross-reference evidence, and practical Class D design guidance. Exact pricing, lifecycle status, complete electrical limits, and several physical details were not supplied by the verified sources and are therefore identified rather than guessed.
MP7748SGF-Z - 60W Class D Audio Amplifier | MPS
The Monolithic Power Systems MP7748SGF-Z is a fully integrated Class D audio amplifier capable of delivering 2 x 30 W stereo single-ended output or 60 W mono bridge-tied-load output in a 28-pin TSSOP-EP package. The verified family data identifies integrated 200 mΩ power MOSFETs, startup and shutdown pop-elimination circuitry, and short-circuit protection. A Class D audio amplifier is a switching power amplifier that uses pulse-width modulation to drive speakers with high efficiency while filtering the switching waveform into an audio output. It belongs to the audio amplifier hierarchy, where its efficiency and output power can exceed those of conventional linear Class A/B amplification. The MP7748S uses proprietary variable-frequency topology and is designed for compact consumer-audio and multimedia systems. The amplifier supports two 30 W channels into 4 Ω speakers when configured as single-ended stereo, or one 60 W channel into an 8 Ω speaker when its outputs are combined in bridge-tied-load mode. This flexibility allows one device family to address stereo speakers, a mono subwoofer, a compact monitor, or a consumer-audio terminal. Integrated power MOSFETs reduce external component count and simplify the output stage. The supplied manufacturer search result states that the MP7748S provides high fidelity comparable to Class A/B amplification at high Class D efficiency. Variable-frequency operation can also reduce low-frequency interference concerns associated with a fixed switching frequency, although frequency-dependent EMI evaluation remains essential. Input filtering, output reconstruction, speaker load, thermal conditions, and supply decoupling determine final acoustic and system performance. Typical uses include compact stereo systems, portable or multimedia speakers, home-theater amplification, powered subwoofers, smart displays, and compact consumer-audio products. In single-ended operation, each channel drives a speaker independently; in bridge-tied-load operation, the two outputs work together so the speaker sees the differential voltage without tying either output to ground. Layout is critical because the exposed pad and output traces carry power while the audio input is sensitive to switching and ground noise. Place input filtering and decoupling near their associated pins, keep loudspeaker outputs away from the analog input, and use the manufacturer’s datasheet land pattern and output-filter recommendations. Verify thermal performance, speaker impedance, and protection behavior in the final enclosure. This page combines verified manufacturer and distributor data with application guidance, source traceability, and drop-in-replacement analysis. It explicitly distinguishes confirmed MP7748SGF information from target-ordering and package details that were not supplied, avoiding unsupported electrical or commercial assumptions.
MP7751GF-Z - 2x20W Stereo Class-D Audio Amplifier | MPS
The Monolithic Power Systems MP7751GF-Z is a fixed-frequency, stereo, analog-input Class-D audio amplifier delivering 2 x 20 W into 8-ohm speakers at an 18 V supply. It operates from 5 V to 26 V and is packaged in a 28-pin TSSOP with exposed pad. The integrated solution is designed to reduce board size by combining 240 mΩ power MOSFETs, start-up and shutdown pop elimination, short-circuit protection, and advanced EMI performance. A Class-D audio amplifier is a switching power amplifier within the broader audio-amplifier and power-management semiconductor hierarchy. Instead of continuously dissipating a signal through linear output devices, it uses efficient switching stages to drive a speaker load. The MP7751 uses a bridge-tied-load topology, which means each speaker is connected between two switching outputs rather than to ground. This improves output-voltage utilization and can provide substantial audio output from a compact integrated circuit. Key verified features include a 5 V to 26 V supply range, stereo operation, 20 W per channel at 18 V into 8 ohms, and a fixed switching-frequency implementation. The integrated 240 mΩ power MOSFETs reduce external component count, while short-circuit protection improves robustness in speaker-drive applications. The exposed thermal pad supports heat transfer through the PCB, although thermal design must account for the amplifier dissipation and copper area. The MP7751GF-Z is positioned for analog audio systems requiring compact stereo amplification, including powered speakers, consumer audio equipment, small multimedia systems, and portable or compact audio products. Compared with a discrete MOSFET output stage, the integrated amplifier simplifies layout and reduces component count. Compared with a higher-power external amplifier, the MP7751 is appropriate when the required speaker load is near 20 W per channel and the available supply is within its verified operating range. The main design consideration is power-thermal management. Class-D efficiency does not eliminate heat: output-stage loss still depends on supply voltage, load impedance, output power, switching characteristics, and copper thermal resistance. Layout should follow the manufacturer datasheet exactly, preserve the exposed-pad connection, keep switching loops compact, and provide adequate input filtering. Speaker wiring should remain short and separated from sensitive analog input routing to reduce EMI pickup and pop artifacts. This page combines verified manufacturer and distributor information with practical guidance on analog-input filtering, exposed-pad thermal design, speaker protection, and application selection. Pricing and availability must be checked as of 2026-10-22 because distributor inventory and terms can change without notice.