STA516BFTR - 480W Class-D Audio Amplifier | STMicroelectronics
MPN： STA516BFTR ✓ 啟用中STA516BFTR 概覽
A Class-D audio amplifier is a switching power amplifier whose output transistors operate at or near saturation. Compared with a linear audio amplifier, this topology can provide higher conversion efficiency and lower heat dissipation because less power is dissipated in the output devices. The STA516B family combines that switching-output approach with integrated control and gate-drive functions, simplifying high-power audio amplifier design while preserving direct control over speakers and reactive loads.
The device is identified as a one-channel mono or two-channel stereo audio amplifier solution rated for 480 W output. Its 60 V class voltage capability provides headroom for higher bus voltages commonly considered in high-performance audio, while the 6 A quad power half-bridge architecture supports robust low-frequency output. A differential input arrangement enables direct connection to many audio signal chains without a separate predriver stage.
The PowerSO-36 EPU mechanical format concentrates heat transfer through the exposed pad, making PCB thermal design essential. Input, output, supply, and power-ground connections must be routed carefully to preserve signal integrity and current handling. The large output-current path should use wide copper planes, multiple vias, and a thermal design that controls junction temperature under sustained full-power operation.
Typical applications include professional audio power amplifiers, high-performance home-theater and multi-channel amplifiers, subwoofer amplifiers, automotive-audio systems, and powered speakers. The STA516BFTR is especially relevant when high output power, a high-voltage Class-D output stage, and a thermally exposed surface-mount package are required within a compact amplifier design.
Use the manufacturer pin configuration and reference-layout guidance when assigning tracks. Decoupling capacitors should be placed directly beside the supply pins, the exposed thermal pad must connect to the required copper area, and output wiring should be kept short and separated from sensitive input paths. Thermal performance should be evaluated at the intended load, speaker impedance, supply voltage, and enclosure temperature.
This product page combines the verified device identity and package information with practical thermal, layout, sourcing, and application guidance. It also distinguishes pin-compatible same-family options from substitutions that require engineering review, helping designers shorten evaluation time while protecting amplifier performance and reliability.
直接替換替代品，適用於 STA516BFTR — 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。
STA516BETR
✅ 直接替換聯絡詢價
查看資料表 →STA516BGTR
✅ 直接替換📋 參考替代品（不在目錄中）
STA516BDTR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STA516BF
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STA516B
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STA516BFTR 最大額定值與電氣特性
| Product Type | 1-channel mono or 2-channel stereo Class-D audio amplifier IC |
| Maximum Output Power | 480 W |
| Maximum Supply Voltage | 60 V |
| Output Stage Current Rating | 6 A |
| Output Architecture | Quad power half-bridge |
| Amplifier Topology | Class-D |
| Channel Configuration | 1-channel mono or 2-channel stereo |
| 封裝 | PowerSO-36 EPU |
| 安裝類型 | Surface mount |
| Thermal Construction | Exposed pad package |
| Lead-Free Status | Lead-free |
| RoHS 狀態 | RoHS3 compliant |
STA516BFTR powerso-36 epu 腳位配置指南
STA516BFTR（powerso-36 epu 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： STA516BFTR.
請參閱 資料表 以查看完整腳位配置。
典型應用
STA516BFTR 適用於 6 應用s: Professional Stereo Power Amplifier, Home-Theater Multi-Channel Amplifier, Subwoofer Power Amplifier, Powered Speaker Network, Automotive High-Power Audio Stage, Portable High-Power Audio Amplifier.
Professional Stereo Power Amplifier
The STA516BFTR fits a professional stereo power-amplifier output stage because it combines a 480 W Class-D rating with a 60 V class supply capability in the PowerSO-36 EPU package. The amplifier can be configured for mono or stereo operation according to its documented circuit arrangement. In a two-channel design, each output stage requires independent gate-drive and feedback implementation. Designers should use short, wide output-current paths and multiple thermal vias beneath the exposed pad. Sustained output depends on speaker impedance, supply voltage, signal level, and enclosure cooling, so the 480 W figure must be evaluated under the intended test conditions rather than treated as an unrestricted continuous rating.
推薦
Home-Theater Multi-Channel Amplifier
A multi-channel home-theater amplifier can use the STA516BFTR as a compact high-power Class-D output stage for front, surround, or subwoofer channels. Its 480 W capability supports high-power speaker systems, while the 60 V class supply voltage provides useful design headroom for professional-style bus voltages. Each channel needs its own feedback network and output filtering, and the common power-ground structure must maintain low impedance. Because the EPU package dissipates heat through its exposed pad, a continuous copper area, thermal vias, and controlled enclosure airflow are essential. Proper decoupling near the supply pins also helps preserve stable operation during rapid music transients.
推薦
Subwoofer Power Amplifier
The STA516BFTR is appropriate for a high-output subwoofer amplifier where low-frequency current demand and substantial power handling dominate the design. A Class-D topology improves conversion efficiency compared with a conventional linear output stage, helping reduce amplifier heat in a sealed or compact enclosure. The 480 W rating makes it possible to support high-power subwoofer drivers, although low speaker impedance increases output current and thermal stress. Feedback components must be selected for stable operation at the target impedance, while the output filter should be checked for both inaudible frequency response and protection requirements. The exposed PowerSO-36 EPU pad must be thermally coupled to the enclosure or internal heat-spreading structure.
推薦
Powered Speaker Network
The STA516BFTR can serve as the output stage of a powered speaker intended for high-performance playback or compact installation audio. A 480 W Class-D output reduces the physical size and heat burden relative to a similarly powerful linear amplifier, which is valuable when the amplifier must share space with drivers and enclosure thermal management. The 60 V class operating limit supports a suitably rated internal power supply, but actual usable output depends on supply tolerance, load impedance, and signal-chain headroom. The mono or stereo flexibility allows the same power-stage family to support different channel plans. Correct decoupling, output filtering, speaker protection, and exposed-pad heat transfer are essential for reliable operation.
推薦
Automotive High-Power Audio Stage
The STA516BFTR can be considered for automotive high-power audio concepts that require a 480 W mono or stereo Class-D output stage. The 60 V class voltage provides margin for automotive battery-derived power architectures and enables efficient boost conversion when required. Vehicle environments introduce vibration, temperature, transient, and electromagnetic-immunity challenges, so the complete amplifier must be validated beyond nominal electrical performance. The PowerSO-36 EPU package requires a robust solder-joint area, thermal cycling verification, and mechanical support appropriate for automotive vibration. Before production use, confirm the exact suffix qualification, operating-temperature limits, transient protection, and all manufacturer application requirements.
推薦
Portable High-Power Audio Amplifier
The STA516BFTR is suitable for a portable or rack-mounted high-power audio amplifier when system weight is important but continuous output and thermal capacity remain significant. Class-D conversion efficiency allows more audio power from a given thermal envelope, while the 480 W device rating supports demanding speakers. Battery-operated implementations also need an efficient upstream converter because the amplifier cannot create additional output power beyond the available supply. The 60 V class limit may require a boost stage for high-voltage bus operation, adding component count and conversion loss. Mechanical design should isolate vibration, and the exposed thermal pad should connect to a heat spreader or chassis surface to prevent rapid thermal shutdown.
推薦
推薦產品摘要
工程參考資料，適用於 STA516BFTR — 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 | STA516BETR | STA516BGTR | STA516BDTR | STA516BF | STA516B |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | PowerSO-36 EPU | PowerSO-36 EPU | PowerSO-36 EPU | PowerSO-36 EPU | PowerSO-36 EPU | PowerSO-36 EPU |
| Maximum Supply Voltage | 60 V | 60 V | 60 V | 60 V | 60 V | 60 V |
| Output Stage Current Rating | 6 A | 6 A | 6 A | 6 A | 6 A | 6 A |
| Amplifier Topology | Class-D | Class-D | Class-D | Class-D | Class-D | Class-D |
| Output Architecture | Quad power half-bridge | Quad power half-bridge | Quad power half-bridge | Quad power half-bridge | Quad power half-bridge | Quad power half-bridge |
| Channel Configuration | 1-channel mono or 2-channel stereo | 1-channel mono or 2-channel stereo | 1-channel mono or 2-channel stereo | 1-channel mono or 2-channel stereo | 1-channel mono or 2-channel stereo | 1-channel mono or 2-channel stereo |
| Thermal Construction | PowerSO-36 EPU exposed pad | PowerSO-36 EPU exposed pad | PowerSO-36 EPU exposed pad | PowerSO-36 EPU exposed pad | PowerSO-36 EPU exposed pad | PowerSO-36 EPU exposed pad |
主要差異化特點
- High-power Class-D output in a single power-stage package (對比STA516B)
- Defined mono and stereo usage options (對比STA516BETR)
- Exposed-pad thermal path for sustained high-power output (對比STA516BGTR)
設計說明
Treat the exposed PowerSO-36 EPU pad as the primary heat path. Provide a continuous top-layer copper area, multiple thermal vias into inner power-ground planes, and adequate copper on adjacent layers. Estimated: power dissipation equals output power divided by amplifier efficiency; for 480 W output at 90% efficiency, approximately 53 W enters the amplifier as loss. Actual junction temperature must be evaluated with the manufacturer thermal data and the intended board, enclosure, and ambient conditions.
Place local supply-decoupling capacitors immediately beside the device supply pins and power-ground connections. Keep the high-current output loops compact, use wide copper paths rather than narrow traces, and connect vias with adequate current capacity. The input and feedback networks should remain away from power switching nodes to reduce differential pickup. Follow the manufacturer reference land pattern because exposed-pad dimensions and via arrangement influence both soldering and heat transfer.
Keep speaker outputs, switch-node copper, and the exposed power pad away from audio input and feedback traces. Use a solid common power-ground structure inside the power stage while maintaining the output-current return path through the intended half-bridge legs. If the amplifier shares a board with low-level circuitry, establish the return-current boundary around the power section and place filtering or shielding near the interference source.
Do not assume the 480 W headline rating is valid for every speaker impedance, supply voltage, channel count, or signal duration. Check the specified output-power conditions, current limit, minimum load, thermal limits, and protection behavior. Also confirm that the selected STA516B suffix has the required qualification and operating-temperature range. A shared package and family name do not by themselves establish every suffix-level rating.
合規資訊
The STA516BFTR listing identifies RoHS3-compliant, lead-free construction. No additional compliance status should be inferred for the individual replacement suffixes without their manufacturer declarations.
