STPA002HSD-48X - Quad Class AB Audio Power Amplifier | STMicroelectronics
MPN： STPA002HSD-48X ✓ 啟用中STPA002HSD-48X 概覽
An audio power amplifier is an integrated circuit that converts low-level audio signals into current and voltage capable of driving loudspeakers. A Class AB amplifier conducts for both halves of the signal cycle, balancing linearity and efficiency compared with more highly efficient but nonlinear switching classes. The STPA002 belongs to the broader hierarchy of amplifier IC, linear audio amplifier, audio power amplifier, and automotive power-semiconductor product categories.
The STPA002 is designed as a MOSFET Class AB audio power amplifier. Its four-channel configuration supports multi-speaker vehicle audio systems where front and rear speaker groups may require independent amplification. STMicroelectronics highlights the device’s outstanding output-current capability, distortion performance, and robustness against fortuitous misconnections. The manufacturer also states that the amplifier complies with current OEM requirements for low-voltage operation in start-stop vehicles.
Automotive audio differs from conventional consumer audio because the battery voltage can vary during engine cranking, and alternator behavior can produce large electrical transients. The STPA002HSD-48X is therefore positioned as a robust bridge-oriented power stage for vehicle radio systems. Its MOSFET output architecture is intended to combine efficient loudspeaker drive with the low distortion expected from a Class AB audio amplifier.
Typical uses include car head units, automotive radio systems, four-speaker infotainment platforms, and vehicle audio subassemblies with multiple amplified outputs. The four-channel architecture simplifies allocation of amplifier channels across the vehicle cabin. In a typical design, the source unit supplies audio signals, protection and filtering networks handle board-level concerns, and the amplifier drives speaker loads through suitable output networks.
Designers should evaluate the exact output power, channel configuration, load impedance, thermal limits, supply range, distortion behavior, and pin functions from the manufacturer datasheet before finalizing the PCB. The vertical 27-Flexiwatt package also requires attention to copper area and thermal paths because an audio power amplifier dissipates energy as heat. Proper grounding, speaker-routing isolation, and protection against accidental short circuits are essential in a vehicle environment.
This product page combines the manufacturer’s device positioning with distributor package and catalog information, then adds engineering-focused selection, thermal, layout, and comparison guidance. It is intended to help designers distinguish the STPA002HSD-48X from unrelated quad audio amplifiers before validating the final schematic, footprint, and operating limits.
直接替換替代品，適用於 STPA002HSD-48X — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
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與下列產品可直接替換的同系列型號： STPA002HSD-48X （相同外形與佔位） — 差異在於 Mounting Type.
STPA003HSD-48X
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查看資料表 →STPA002HSD-48X 最大額定值與電氣特性
| Device Type | Four-channel audio power amplifier IC |
| Amplifier Class | Class AB |
| Output Architecture | MOSFET Class AB |
| Number of Channels | 4 channels |
| 封裝 | 27-Flexiwatt vertical |
| 安裝類型 | Through-hole |
| Primary Application | High-power car radio |
| Automotive Infotainment Support | Designed for automotive infotainment and telematics systems |
| Start-Stop Vehicle Support | Compliant with current OEM specifications for low-voltage operation |
| Misconnection Robustness | Designed for robustness against several types of fortuitous misconnection |
| RoHS 狀態 | Supported |
| Tube Quantity | 1600 pieces |
STPA002HSD-48X 27-flexiwatt vertical 腳位配置指南
STPA002HSD-48X（27-flexiwatt vertical 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： STPA002HSD-48X.
請參閱 資料表 以查看完整腳位配置。
典型應用
STPA002HSD-48X 適用於 6 應用s: Automotive Head-Unit Amplification, Start-Stop Vehicle Radio, Four-Speaker Infotainment System, Automotive Subwoofer Amplifier, Vehicle Multi-Zone Audio, Automotive Audio Reference Platform.
Automotive Head-Unit Amplification
The STPA002HSD-48X fits a four-speaker automotive head-unit design because its four-channel MOSFET Class AB architecture can support separate front and rear loudspeaker drive paths. STMicroelectronics positions the device for high-power car-radio systems and highlights output-current capability, distortion performance, and robustness against fortuitous misconnections. Using one quad amplifier can reduce the number of separate output channels required by the radio platform. The final channel-power budget must be calculated from the actual supply voltage, speaker impedance, thermal conditions, and manufacturer limits. PCB routing should keep speaker outputs separated from audio inputs and sensitive control circuitry, while grounding and decoupling must follow the reference configuration.
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Start-Stop Vehicle Radio
The STPA002HSD-48X is appropriate for start-stop vehicle radio platforms where the electrical environment can include unusually low operating voltages during engine transitions. The manufacturer states that the amplifier complies with current OEM specifications for low-voltage operation in start-stop vehicles, making that operating scenario central to the device’s positioning. Four Class AB output channels can serve multiple cabin speakers while retaining linear audio amplification. Engineering validation should include cold-crank behavior, supply excursions, startup sequencing, output stability, and protection recovery. The board must also prevent unintended amplifier behavior if the supply rail falls outside the normal operating window.
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Four-Speaker Infotainment System
The STPA002HSD-48X can support a four-channel infotainment architecture in which front-left, front-right, rear-left, and rear-right loudspeakers receive amplified audio from one quad device. Its MOSFET Class AB output stage is intended to balance low distortion with the current capability needed for automotive speaker loads. The manufacturer’s stated robustness against several kinds of fortuitous misconnections is especially relevant where speaker wiring can be connected incorrectly during vehicle assembly or service. Designers should still add appropriate board-level protection where required, verify thermal performance at maximum continuous output, and confirm speaker impedance before layout release.
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Automotive Subwoofer Amplifier
The STPA002HSD-48X may be evaluated for an automotive subwoofer stage when the required channel count, output power, thermal capability, and speaker load fall within the device limits. The Class AB topology provides linear loudspeaker drive, while the MOSFET output arrangement is central to the device’s automotive positioning. Because the amplifier is designed as a four-channel car-radio device, one implementation could combine multiple low-power cabin channels with a higher-power subwoofer channel, provided the exact output architecture and per-channel limits support that allocation. Verify continuous and peak dissipation, crossover behavior, and protection thresholds using the manufacturer documentation rather than inferring them from catalog headlines.
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Vehicle Multi-Zone Audio
The four-channel format of the STPA002HSD-48X can support multi-zone vehicle audio, such as separate front, rear, and auxiliary cabin zones, when the amplifier topology permits the intended channel allocation. The manufacturer highlights high output-current capability and low distortion performance, both relevant when several automotive loudspeaker loads operate simultaneously. Independent routing or mute control, if required, must be implemented within the exact pin and electrical architecture shown in the datasheet. Layout should maintain symmetric speaker paths where possible, minimize loop area in output wiring, and provide adequate thermal copper around the vertical 27-Flexiwatt package.
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Automotive Audio Reference Platform
The STPA002HSD-48X can serve as the power stage in an automotive audio reference platform used to evaluate speaker loading, distortion, fault recovery, and system-level sound quality. Its four outputs allow engineers to monitor several vehicle loudspeaker channels from one amplifier while comparing normal operation with transient or misconnection conditions. The manufacturer’s focus on robustness against fortuitous misconnections makes the device relevant to diagnostic and fault-tolerance testing, although it does not replace application-specific protection requirements. Build the test setup with defined load conditions, calibrated measurement equipment, safe speaker disconnect procedures, and thermal monitoring before conducting continuous-output trials.
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推薦產品摘要
工程參考資料，適用於 STPA002HSD-48X — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STPA003HSD-48X |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 27-Flexiwatt vertical | 27-Flexiwatt vertical; exact footprint compatibility requires confirmation |
| Product Type | Audio power amplifier IC | Audio power amplifier IC |
| Primary Application | High-power car radio and automotive infotainment | Automotive audio amplification; exact application requires confirmation |
主要差異化特點
- Four-channel Class AB integration (對比STPA003HSD-48X)
- MOSFET Class AB automotive positioning (對比STPA003HSD-48X)
- Fortuitous-misconnection robustness (對比STPA003HSD-48X)
設計說明
Treat the vertical 27-Flexiwatt package as a thermal design constraint, not merely a mechanical choice. Estimated: maximum continuous dissipation equals the sum of each channel’s output power divided by the amplifier efficiency, plus bias and quiescent losses; the calculated result must remain below the package and board temperature limits. Use the manufacturer thermal-resistance and derating data for the actual copper area, airflow, ambient temperature, and mounting orientation before assigning maximum output power.
Follow the manufacturer reference layout for the 27-Flexiwatt vertical footprint and confirm every numbered terminal against the STPA002 datasheet before fabrication. Keep loudspeaker output and power-supply paths away from audio inputs and control traces, minimize loop area, and use a low-impedance ground return. Place input filtering, supply decoupling, and output-network components at the locations specified by the reference design so that protection, stability, and distortion performance are preserved.
Do not infer short-circuit tolerance from the word ‘robust’ without identifying which misconnection conditions the manufacturer tested. Confirm speaker impedance, maximum speaker wiring length, ground topology, supply transients, and enable or mute behavior from the datasheet. The STPA002 is intended for automotive low-voltage systems, so verify start-stop operating requirements and cold-crank behavior across the complete vehicle power profile rather than testing only at a nominal battery voltage.
Audio power stages can couple speaker-current transients into sensitive signal paths. Route each output according to the reference design, keep input and feedback traces short, and provide a stable star or dedicated return path for amplifier current. Decoupling capacitors must be placed with very low trace inductance at the intended supply pins. Validate the completed board with output short-circuit, startup, thermal, and audio-frequency measurements because schematic connectivity alone does not establish layout robustness.
合規資訊
The component listing states that RoHS is supported. No specific AEC-Q100 grade, REACH declaration, lead-free statement, halogen-free statement, or conflict-minerals declaration was identified in the product records.