STA50813TR - 40V 4.5A Class D Audio Amplifier | STMicroelectronics
Артикул: STA50813TR ✓ АктивенSTA50813TR Обзор
A digital audio power amplifier is a power-management semiconductor that converts digital pulse information into high-current audio outputs. The half-bridge arrangement uses switches to apply the supply voltage alternately to each side of the speaker load. When two half-bridges drive one speaker, the device operates as a full bridge; multiple output stages can also be combined for stereo or multi-channel amplification.
The STA50813TR supports a maximum supply voltage of 40 V and a maximum output current of 4.5 A. Its monolithic quad half-bridge stage uses STMicroelectronics Multipower BCD technology to combine analog control, digital drive, and power transistors in one package. The CONFIG pin can be connected to VDD to select single-bridge operation with doubled current capability. The device is intended for demanding powered-speaker systems where a compact external heat-spreading solution and efficient class-D conversion are important.
A useful architectural distinction is that the STA50813TR is a digital-input power stage rather than a conventional analog-input audio amplifier. It therefore belongs near the final speaker-output stage of a digital audio signal chain, behind the audio processor, codec, DAC, or PWM controller that generates the required drive signals. This arrangement allows digital volume control and signal processing to occur upstream while the power stage handles speaker current efficiently.
Typical uses include active loudspeakers, home-theater speaker systems, professional audio amplification, powered subwoofers, and compact multi-driver speakers. It is particularly appropriate when the system needs multiple Class D outputs, flexible bridge configuration, and operation from a supply up to 40 V. The exposed top pad also provides a direct path for heat removal from the power stage.
Designers should carefully route the high-current switching outputs, provide stable input and bootstrap circuitry, connect the exposed thermal pad to an effective copper heat-spreading area, and keep sensitive control and audio signal traces away from output switching nodes. The CONFIG connection and all input-interface timing must be validated against the manufacturer’s recommended application circuit before production release.
This product summary combines the identified device architecture, electrical ratings, package information, configuration options, and practical thermal and layout guidance. It also distinguishes verified drop-in replacements from related devices that merely share a broad product category, helping engineers evaluate replacement risk before modifying an existing amplifier design.
Аналоги без доработки для STA50813TR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
STA508A
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
STA50813TR Максимальные параметры и электрические характеристики
| Device Type | Digital audio power amplifier |
| Amplifier Class | Class D |
| Architecture | Quad power half-bridge |
| Maximum Supply Voltage | 40 V |
| Максимальный выходной ток | 4.5 A |
| Выходная конфигурация | Mono or stereo |
| Input Type | Digital |
| Reconfiguration Method | Connect CONFIG pin to VDD for single-bridge operation with double current capability |
| Process Technology | Multipower BCD technology |
| Корпус | PowerSO-36 with exposed top pad |
| Число выводов | 36 pins |
| Тип монтажа | Surface mount |
| Output Stage | Four power half-bridges |
Руководство по цоколевке STA50813TR в корпусе powerso-36 with exposed top pad
Цоколевка для STA50813TR (корпус powerso-36 with exposed top pad). Этот аналоговый компонент имеет выводы входа, выхода и питания. Обратитесь к техническому описанию производителя для конфигураций выводов балансировки нуля, коррекции и разрешения. Идеально подходит для схем обработки сигналов и усилителей.
Нет подробных данных о распиновке для STA50813TR.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
STA50813TR подходит для 6 применениеs: Powered Stereo Loudspeaker, Powered Subwoofer, Home Theater Speaker Amplifier, Professional Active Speaker, Multi-Channel Audio System, Portable Powered Speaker.
Powered Stereo Loudspeaker
The STA50813TR fits a powered stereo loudspeaker when the system generates digital drive upstream. Its four Class D half-bridges can be arranged for stereo operation, while its 40 V maximum supply and 4.5 A maximum output current provide the core power-stage ratings needed by compact high-output speakers. Place the device near the speaker connectors, use low-impedance output routing, and dedicate substantial PCB copper to the exposed top pad. The upstream audio processor should provide the required digital signals, and the output network must be selected for the intended speaker impedance and amplifier topology.
Рекомендуется
Powered Subwoofer
The STA50813TR is suitable for a digitally driven powered subwoofer when the speaker load and power budget remain within the 40 V supply and 4.5 A output limits. Connecting CONFIG to VDD enables the single-bridge arrangement described for double current capability, allowing multiple half-bridges to serve a higher-current output configuration. The design must still account for peak speaker current, bass-signal slew requirements, output filtering, and thermal rise. Place the exposed-pad thermal area on uninterrupted copper and keep switching outputs short and separated from control traces.
Рекомендуется
Home Theater Speaker Amplifier
A home-theater power amplifier can use the STA50813TR to convert digital audio drive into Class D speaker outputs. The four-half-bridge organization supports flexible channel implementation, while the 40 V maximum supply is appropriate for higher-voltage amplifier buses compared with many low-voltage portable systems. Because the device is a digital power stage rather than a line-input amplifier, it should follow the system codec or audio processor. Output filters, speaker protection, channel routing, and the exposed-pad heat path must be designed together to prevent switching transients and thermal overload.
Рекомендуется
Professional Active Speaker
The STA50813TR can support a professional active-speaker power stage where efficient Class D conversion, flexible bridge configuration, and substantial output current are priorities. Its 4.5 A maximum output current and four integrated half-bridges reduce the number of external power-stage devices required for a multi-driver cabinet. The designer must independently verify continuous and peak loading, protection behavior, thermal performance, and signal timing for the selected speaker network. Use generous copper under the exposed top pad and preserve a quiet return path for control and digital drive signals.
Рекомендуется
Multi-Channel Audio System
The STA50813TR is applicable to multi-channel audio systems that need several Class D outputs from a compact power-stage package. Its four power half-bridges can be grouped for stereo or other supported configurations, and the CONFIG pin permits a single-bridge operating mode with increased current capability. This flexibility is useful when designing powered speakers, compact cinema systems, or amplified distribution units. Signal routing and amplifier configuration must be established before PCB layout because changing the bridge arrangement can affect pin usage, output-filter selection, speaker wiring, and protection thresholds.
Рекомендуется
Portable Powered Speaker
The STA50813TR can be used in a portable powered speaker when its battery-derived supply can support the required 40 V-class operating voltage and the design includes appropriate protection for supply transients. The Class D architecture provides efficient speaker drive, while the compact PowerSO-36 package integrates four half-bridges. Battery systems should use a regulated or boost-converter rail sized for the target output power, and designers should include undervoltage, overcurrent, and speaker-fault protection. Thermal performance depends on the enclosure, copper area, ambient temperature, and continuous duty cycle rather than package size alone.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для STA50813TR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | STA508A |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | PowerSO-36 with exposed top pad | PowerSO-36 |
| Amplifier Class | Class D | Class D |
| Architecture | Quad power half-bridge | STA508 power-stage family |
| Output Configuration | Mono or stereo | 1-channel mono, 2-channel stereo, or 4-channel stereo |
Ключевые отличия
- Four power half-bridges are integrated in one package (против STA508A)
- CONFIG pin supports a higher-current single-bridge arrangement (против STA508A)
- Multipower BCD integration reduces external power-stage count (против STA508A)
Заметки по проектированию
Connect the exposed top pad to the largest practical uninterrupted copper region and provide thermal vias toward lower PCB layers. Estimated thermal sizing should begin with the worst-case output power, conversion loss, ambient temperature, and target junction limit. The actual power dissipation and operating-temperature limits must be taken from the manufacturer datasheet; the 40 V supply rating alone is not a safe operating point or a substitute for a heat-loss calculation.
Keep the CONFIG, clock or digital-control, and bootstrap connections away from power-output and switching-node traces. Place input and bootstrap components close to their associated pins, maintain short high-current output paths, and use a quiet ground strategy for the control circuitry. The CONFIG connection changes the bridge arrangement and available output current, so its routing should follow the manufacturer reference layout exactly and remain mechanically and electrically consistent with the selected speaker topology.
Design the supply path for the device’s 40 V maximum rating while including transient margin, local bulk decoupling, and protection appropriate to the amplifier’s operating class. Do not assume that the 4.5 A output rating applies equally to every internal half-bridge in every configuration. Confirm continuous and peak current limits, external component requirements, and output-filter topology in the manufacturer datasheet before selecting inductors, capacitors, MOSFETs, or protection components.
A common error is treating a related STA508 suffix as a drop-in replacement without checking its exact pin table and CONFIG behavior. Another error is using a generic line-level audio input architecture with this digital-input power stage. Verify the upstream signal format, timing, input levels, output mapping, speaker impedance, and exposed-pad connection. Also confirm that the amplifier’s output filtering and protection network are appropriate for the selected bridge arrangement before energizing the speaker.
Информация о соответствии
No authoritative compliance declarations were identified for the exact STA50813TR ordering code. Confirm RoHS, REACH, halogen-free, and conflict-minerals status with STMicroelectronics using the product's current material-declaration documentation.
