MP8049SDU-LF-P - 30W Quad Class-D Driver | MPS
MPN: MP8049SDU-LF-P ✓ ActiveMP8049SDU-LF-P Overview
A Class-D audio amplifier is a switching power amplifier in which the output transistors operate between the active and inactive states. A full-bridge arrangement provides differential drive and can produce an output without a DC-blocking output capacitor, while a half-bridge arrangement can provide a single-ended output stage. The MP8049SDU-LF-P integrates this power-driver flexibility into one surface-mount IC intended to serve as the output stage of a Class-D audio amplifier.
The four-channel configuration delivers up to 30 W per channel into 8 ohms, making the device suitable for compact multi-channel audio systems. Its configurable architecture allows each full bridge to operate independently as a stereo single-ended amplifier or to operate complementarily in bridge-tied-load configuration. Short-circuit and thermal protection are listed among the device features, providing practical safeguards for demanding speaker-load and space-constrained designs.
The MP8049S family combines a 26 V operating limit with a 5.5 A output-current capability. These specifications place the device in the class of integrated Class-D output stages intended for consumer audio, multimedia, and powered-speaker applications. The available source information also identifies low-current shutdown and standby modes, while the exact timing and detailed electrical limits for those modes are available in the manufacturer documentation.
Typical uses include quad-channel home-audio amplification, compact stereo systems, multimedia speaker products, and portable or automotive audio subsystems where multiple amplified channels are required. The 40-QFN surface-mount package supports dense PCB layouts, but careful thermal management is essential because sustained multi-channel output can produce significant heat. Designers should also account for the low-voltage power-supply limitations of class-D audio systems.
The principal design consideration is to preserve the power stage's thermal margin and switching performance. Output filtering, speaker-return routing, and high-current supply connections should be implemented as short, wide paths, while the exposed-pad thermal requirements of the 40-QFN package must be followed. The -LF-P ordering suffix identifies the supplied reel configuration, and engineers should confirm package orientation, exposed-pad layout, and pin assignments against the manufacturer datasheet before release to production.
This page consolidates the verified distributor and manufacturer information for the MP8049SDU-LF-P, identifies the available same-family ordering alternatives, and adds application guidance for Class-D amplifier implementation. Because detailed pin assignments, exact switching limits, thermal data, and numeric price tiers were not included in the retrieved source material, those items are marked for verification rather than inferred.
Drop-in alternatives for MP8049SDU-LF-P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
MP8049SDU-LF-Z
✅ Drop-InContact for price
View Datasheet →MP8049SDU-LF
✅ Drop-In📋 Reference alternative (not in catalog)
MP8049SDU
✅ Drop-In📋 Reference alternative (not in catalog)
MP8049SDU-LF-P Maximum Ratings & Electrical Characteristics
| Product Type | Class-D audio amplifier power driver |
| Number of Output Channels | 4 channels |
| Configurable Output Topology | Dual full-bridge or quad half-bridge |
| Maximum Operating Voltage | 26 V |
| Maximum Output Current | 5.5 A |
| Maximum Output Power per Channel | 30 W at 8 ohm |
| Total Configured Output Power | 120 W across 4 channels at 8 ohm |
| Output Type | Quad-channel half-bridge or dual-channel full-bridge |
| Short-Circuit Protection | Yes |
| Thermal Protection | Yes |
| Shutdown Mode | Low-current shutdown mode |
| Standby Mode | Supported |
| Package | 40-QFN, 5 mm x 5 mm |
| Mounting Type | SMD |
| Packaging | Reel |
| Lifecycle Status | Active |
MP8049SDU-LF-P 40-qfn, 5 mm x 5 mm Pin Configuration Guide
Pin configuration for MP8049SDU-LF-P (40-qfn, 5 mm x 5 mm 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 MP8049SDU-LF-P.
Refer to the datasheet for full pin configuration.
Typical Applications
MP8049SDU-LF-P is suitable for 6 applications: Compact Home-Audio Speaker Amplifier, Multimedia Speaker Systems, Stereo Bridge-Tied-Load Amplifier, Portable Powered Speaker, Automotive Audio Output Stage, Powered Subwoofer and Multi-Way Speaker.
Compact Home-Audio Speaker Amplifier
The MP8049SDU-LF-P is suitable for compact home-audio designs that require several amplified outputs in a small circuit area. Its quad half-bridge configuration can provide up to 30 W per channel into an 8 ohm load, while the alternate dual full-bridge configuration supports differential speaker drive. The 5 mm by 5 mm 40-QFN package reduces board footprint compared with four discrete power stages, although continuous four-channel operation still requires adequate exposed-pad cooling and wide supply and output paths.
Recommended
Multimedia Speaker Systems
The MP8049SDU-LF-P can implement four Class-D half-bridge outputs for multimedia speakers, active subwoofers, or compact powered speakers. Its 5.5 A output-current rating and 30 W per channel capability at 8 ohms provide a defined starting point for speaker-output design, while full-bridge operation can provide an alternative topology for balanced loads. Designers should use the manufacturer's reference output filters and verify continuous-power performance under the enclosure's actual thermal conditions.
Recommended
Stereo Bridge-Tied-Load Amplifier
In a bridge-tied-load arrangement, the MP8049SDU-LF-P can use its configurable full-bridge capability to drive speakers differentially and avoid a conventional output coupling capacitor. The source information identifies independent operation of each full bridge, allowing one stereo channel to be driven as a single-ended amplifier while another is driven complementarily when required. Exact input routing, dead time, modulation method, and output-filter selection must be taken from the manufacturer reference design.
Recommended
Portable Powered Speaker
The MP8049SDU-LF-P can support portable or battery-powered speaker products when the available supply voltage remains below the 26 V maximum operating voltage. Quad-channel half-bridge operation provides a straightforward path for multiple speakers, while the 5.5 A output-stage rating addresses higher-current speaker loads. A portable design must still manage supply impedance, amplifier efficiency, battery capability, board temperature, and the device's low-current shutdown mode rather than assuming the nominal channel power is available continuously.
Recommended
Automotive Audio Output Stage
The configurable Class-D power stage in the MP8049SDU-LF-P can support multi-speaker automotive audio architectures where compactness and several driven channels are required. The 26 V maximum operating voltage is compatible with many 12 V vehicle systems when the design includes appropriate transient and supply protection. The retrieved data does not identify an automotive-grade qualification or temperature grade for the -LF-P variant, so those requirements must be verified before use in a safety- or environment-qualified vehicle platform.
Recommended
Powered Subwoofer and Multi-Way Speaker
The MP8049SDU-LF-P is applicable to powered subwoofer and multi-way speaker products that need both full-bridge and half-bridge capability. It can operate as two full-bridge channels or four half-bridge channels, allowing a manufacturer to reuse one IC family across different enclosure and speaker configurations. The verified 30 W per channel at 8 ohm rating applies to the stated load, but real enclosure performance depends on supply voltage, filter losses, amplifier efficiency, thermal resistance, and protection behavior.
Recommended
Recommended Products Summary
Engineering reference data for MP8049SDU-LF-P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MP8049SDU-LF-Z | MP8049SDU-LF | MP8049SDU |
|---|---|---|---|---|
| Package | 40-QFN (5x5 mm) | 40-QFN (5x5 mm) | 40-QFN (5x5 mm) | 40-QFN (5x5 mm) |
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Mounting Type | SMD | SMD | SMD | SMD |
Key Differentiators
- Supports four amplified channels from one 40-QFN power-stage IC (vs MP8049SDU-LF-Z)
- Configurable bridge topology in the same device family (vs MP8049SDU-LF)
- Integrated output-stage safeguards (vs MP8049SDU)
Design Notes
Thermal design is critical when all four channels operate near the verified 30 W per channel capability. Use the manufacturer's exposed-pad land pattern and recommended copper area, keep the 40-QFN close to a thermal spreader if required, and validate the assembled board at the intended ambient temperature. A nominal 30 W rating into 8 ohms does not guarantee that four channels can sustain 120 W simultaneously without an adequate heat sink, airflow arrangement, and power-supply design.
Route the 5.5 A-class output and power-supply paths as short and wide as practical. Keep switching-current loops compact, place input and supply bypassing close to the relevant pins, and maintain uninterrupted ground returns between the power stage, output filters, and speakers. Follow the manufacturer reference layout because a conventional generic 40-QFN footprint may not provide the exposed-pad area, via pattern, and thermal performance assumed by the power rating.
Do not treat the -P, -Z, or base ordering labels as automatically interchangeable until the manufacturer ordering table has been checked. Also verify the distinction between the 26 V maximum operating voltage associated with the MP8049S and the 24 V wording in some MP8049SDU distributor snippets. This discrepancy must be resolved against the released datasheet before setting the supply limit, transient protection level, or production purchasing specification.
Plan the Class-D output filters and speaker connections around the manufacturer's reference topology, keeping the high-voltage switching node traces away from sensitive audio inputs and analog ground areas. The MP8049SDU-LF-P supports full-bridge or half-bridge configurations, but changing topology alters input and output routing. Confirm the selected configuration, external component values, filter behavior, and exposed-pad geometry before releasing the PCB artwork.
Compliance Information
The supplied verified data identifies the part as active but does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown pending manufacturer or distributor compliance documentation.
