STA501A13TR - 4A 45V Audio Power Amp | STMicroelectronics
Артикул: STA501A13TR ✓ АктивенSTA501A13TR Обзор
A power half-bridge is a switched audio output topology that uses two driver channels to develop voltage across a speaker load. The STA501A13TR belongs to the broader class of audio amplifier ICs, which combines power-semiconductor output stages with control logic in one integrated device. By replacing discrete driver and MOSFET stages with a MultiPower BCD circuit, it simplifies the design of high-efficiency mono Class-D amplifiers while preserving a compact system-level implementation.
The principal specifications are a 45 V maximum supply identified by the product listing and a nominal output-current capability of 4 A. The manufacturer datasheet excerpt states that minimum input pulse-width distortion is 200 m and that the output uses a complementary DMOS stage. Additional listed protections include thermal protection, while the 50 W output capability at 30 V and 8 ohms defines the intended high-power audio operating point.
The device is intended for a mono DDX amplifier output stage rather than a conventional small-signal signal amplifier. Its high supply-voltage rating and current capability suit professional-audio power stages, consumer home-theater amplification, and automotive sound systems. The CMOS-compatible logic interface also allows the output stage to be controlled by a digital audio modulator or other digital signal-processing circuitry without requiring high-voltage gate-drive signals.
Because power half-bridge stages can dissipate substantial heat during real speaker operation, PCB layout and thermal management are as important as electrical performance. The PowerSO-36 package must be connected to an adequate thermal copper area, and the power loop should use very short, wide traces. Designers should also account for inductor resistance, switching losses, speaker impedance, and thermal protection behavior rather than relying only on the nominal 4 A output rating.
This page combines the manufacturer-datasheet performance point with practical guidance for selecting and implementing the amplifier. It distinguishes the STA501A13TR from the identified STA501A13TR-1A related variant, outlines the limits of the verified drop-in candidate, and focuses on the design decisions that determine usable output power, distortion, heat dissipation, and PCB reliability in a high-power mono audio system.
Аналоги без доработки для STA501A13TR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
STA501A13TR-1A
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
STA501A13TR Максимальные параметры и электрические характеристики
| Product Type | Audio power amplifier IC |
| Maximum Supply Voltage | 45 V |
| Output Current | 4 A |
| Топология | Double power half-bridge |
| Power Output | 50 W at 30 V, 8 ohm, 10% THD |
| Load Resistance | 8 ohm |
| Total Harmonic Distortion | 10% at 50 W output |
| Output Stage | Complementary DMOS |
| Process Technology | MultiPower BCD |
| Minimum Input Pulse-Width Distortion | 200 ms |
| Logic Input Compatibility | CMOS compatible |
| Protection | Thermal protection |
| Корпус | PowerSO-36 |
| Тип монтажа | Surface mount |
| Lead-Free Status | Lead free |
| Статус RoHS | RoHS compliant |
Руководство по цоколевке STA501A13TR в корпусе powerso-36
Цоколевка для STA501A13TR (корпус powerso-36). 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 STA501A13TR.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
STA501A13TR подходит для 6 применениеs: Mono DDX High-Efficiency Amplifier, Professional Audio Power Stage, Consumer Home-Theater Amplifier, Automotive Audio Power Amplifier, Digital Speaker Amplifier, Powered Speaker and Subwoofer.
Mono DDX High-Efficiency Amplifier
The STA501A13TR is designed as the output stage of a mono All-Digital High Efficiency amplifier, where its 4 A current capability and complementary DMOS output suit the demands of a high-power speaker stage. The manufacturer datasheet specifies 50 W into an 8 ohm load at a 30 V supply with 10% THD. This operating point provides a concrete baseline for amplifier sizing, while the 200 ms minimum input pulse-width distortion identifies an important control-signal timing requirement. In implementation, the device should be paired with a compatible digital audio modulator and the filtering and power-conversion circuitry required by the DDX architecture.
Professional Audio Power Stage
The STA501A13TR fits a professional mono power amplifier because it combines a 45 V supply rating with a 4 A output-current capability in one PowerSO-36 device. Its datasheet performance point of 50 W into 8 ohms at 30 V and 10% THD makes it relevant to stage and monitor-amplifier output designs. The system must nevertheless include adequate output filtering, speaker protection, and thermal control. A wide copper area connected to the package and very short power-loop traces are essential because switching and conduction losses can raise junction temperature even when the audible output level remains moderate.
Consumer Home-Theater Amplifier
For a consumer home-theater power stage, the STA501A13TR offers a 30 V-class output operating point with a manufacturer-rated 50 W output into 8 ohms and 10% THD. Its CMOS-compatible logic inputs simplify interfacing with a digital audio controller, while thermal protection provides an additional system safeguard. The design should use the datasheet-recommended output network and carefully validate stability across the intended speaker impedance. Because the package has no simple exposed-pad heat-sink arrangement, PCB copper area and enclosure airflow directly influence whether continuous high-power use remains thermally acceptable.
Automotive Audio Power Amplifier
The STA501A13TR's 45 V maximum supply and 4 A output-current capability make it a candidate for automotive audio output stages that require more drive than a conventional small-signal amplifier. The PowerSO-36 package supports surface-mount assembly, and CMOS-compatible control inputs can work with a digital audio modulator. Automotive qualification, operating-temperature limits, transient protection, load dump behavior, and ISO 7637-2 compliance are not stated in the available technical record and must be verified before automotive use. The supply path should include suitable transient suppression and current limiting.
Digital Speaker Amplifier
The STA501A13TR can serve as the high-current output section of a digital speaker amplifier because the device is expressly intended for a mono DDX output stage. Its 4 A rating provides substantial peak-current capability, while the 200 ms minimum input pulse-width distortion defines the timing behavior expected by the digital modulator. The amplifier should be configured using the manufacturer-recommended output filter and power-supply arrangement. PCB layout must minimize switching-node area, isolate sensitive control signals, and provide a low-impedance thermal and electrical ground path to preserve output behavior under sustained load.
Powered Speaker and Subwoofer
A powered subwoofer or standalone speaker amplifier can use the STA501A13TR when a compact, high-current output stage is needed. The stated 50 W capability into 8 ohms at 30 V and 10% THD provides a useful design target for a single speaker channel. Real acoustic output depends on the speaker sensitivity, enclosure, filter topology, and thermal limits, so the semiconductor rating alone does not determine final sound-pressure level. Designers should account for amplifier damping, protection against short circuits, startup behavior, and the thermal path from the PowerSO-36 package into the PCB.
Справочные инженерные данные для STA501A13TR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | STA501A13TR-1A |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Maximum Supply Voltage | 45 V | 40 V |
| Output Current | 4 A | 3.5 A |
| Topology | Double power half-bridge | Double power half-bridge |
Ключевые отличия
- Higher listed current capability (против STA501A13TR-1A)
- More voltage headroom (против STA501A13TR-1A)
- Defined high-power audio operating point (против STA501A13TR-1A)
Заметки по проектированию
Treat the PowerSO-36 package and PCB copper area as one thermal assembly. The device can produce 50 W into 8 ohms at 30 V with 10% THD, but semiconductor heating also includes switching and conduction losses. Use the largest practical uninterrupted ground-copper region permitted by the board layout, provide thermal vias where the manufacturer footprint permits them, and validate the enclosure under continuous worst-case output. Do not infer thermal performance from the 50 W audio rating alone.
Use the manufacturer-recommended land pattern and keep the high-current input, output, and ground paths short and wide. Minimize loop area between the power half-bridge and its external switching components because excess inductance increases voltage stress and EMI. Place input and control traces away from the power stage, and preserve the exposed thermal and electrical connections specified by the package drawing.
Do not interpret the 4 A rating as guaranteed continuous output into every load. The stated 50 W result applies at 30 V, 8 ohms, and 10% THD, while the maximum supply rating is 45 V. Check speaker DC resistance, filter losses, peak current, thermal derating, and supply transients. Before substituting the STA501A13TR-1A, confirm its package pins and its lower 40 V, 3.5 A ratings against the system requirements.
A high-current switching output can radiate or conduct emissions through the supply and speaker wiring. Use the recommended output filtering, maintain a compact switching loop, and place bulk and local ceramic decoupling where the reference circuit indicates. Validate conducted and radiated emissions on the completed board because changes to the power loop, cables, enclosure, and grounding can materially alter EMI performance.
Информация о соответствии
The product listing identifies the STA501A13TR as RoHS compliant and lead free. No qualification or material-compliance claims were established for REACH, AEC-Q100, halogen-free status, or conflict minerals.