STA500 - 30V 3.5A Quad Power Half-Bridge | STMicroelectronics
부품 번호: STA500 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.89 | $6.89 |
| 10 | $6.35 | $63.50 |
| 100 | $5.42 | $542.00 |
| 500 | $4.86 | $2,430.00 |
| 1,000 | $4.39 | $4,390.00 |
STA500 개요
A power half-bridge is a switchable power-conversion building block within a bridge amplifier or motor-driver system. Each half bridge uses two complementary switches to drive a load between the supply rail and ground. The STA500 can operate as a dual bridge or, with CONFIG connected to VDD, as a single bridge with doubled current capability. It can also be reconfigured for half-bridge operation in binary mode. This hierarchy places the STA500 among Class D power stages, bridge-driver ICs, and power-management semiconductors.
Key features include a 30 V maximum supply rating, 3.5 A output-current capability, 200 mΩ complementary DMOS output resistance, and CMOS-compatible logic inputs. The device also provides output overvoltage and undervoltage protection plus thermal warning and thermal shutdown. These functions make the STA500 suitable for compact Class D audio output stages where multiple switched outputs are required.
Technically, the monolithic quad-stage architecture reduces the number of external power devices needed for a multichannel or bidirectional-bridge amplifier. Multipower BCD technology integrates the power output path with control logic in one package. The PowerSO-36 format supports surface-mount assembly while providing a substantial thermal pad for heat transfer into the PCB copper area. Designers should still verify the exact SOA, thermal limits, output-current derating, and pin-level conditions against the manufacturer datasheet.
Typical uses include stereo and multichannel audio amplifiers, portable speakers, powered headphones, subwoofer stages, and compact Class D systems. Binary-mode operation can also suit specialized bidirectional or transformer-isolated audio topologies where the application requires half-bridge behavior rather than conventional full-bridge drive.
For robust implementation, preserve the datasheet input/output decoupling arrangement, route high-current outputs with minimal loop area, and provide substantial thermal copper under the exposed pad. The STA500 is a 30 V part, so 30 V is a maximum rating rather than a recommended operating margin; transient, supply, and signal limits must be respected.
This page consolidates verified manufacturer and distributor information, strict drop-in alternative screening, application guidance, and practical PCB considerations. Because the supplied data does not establish a sufficient set of pin-to-pin replacements, compatibility and lifecycle details are explicitly qualified rather than inferred.
드롭인 대체품: STA500 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청STA500 최대 정격 & 전기적 특성
| Device Type | Monolithic quad power half-bridge stage |
| 토폴로지 | Dual bridge, single bridge, or half-bridge in binary mode |
| Process Technology | Multipower BCD technology |
| Maximum Supply Voltage | 30 V |
| Output Current | 3.5 A |
| Output Stage | Complementary DMOS |
| Output Resistance | 200 mΩ |
| Logic Input Compatibility | CMOS-compatible |
| Configuration Control | CONFIG pin; connect to VDD for single-bridge operation |
| Thermal Protection | Thermal warning and thermal shutdown |
| Overvoltage Protection | Output overvoltage protection |
| Undervoltage Protection | Output undervoltage protection |
| 패키지 | PowerSO-36 |
| 실장 유형 | Surface mount |
| Channel Configuration | 2-channel stereo or 4-channel quad |
STA500 powerso-36 핀 구성 가이드
STA500(powerso-36 패키지)의 핀 구성입니다. 이 전력 소자는 게이트, 드레인, 소스 단자를 갖추고 있습니다. 비편향 패키지의 경우 정확한 핀 1 방향과 풋프린트 세부 정보는 제조사 데이터시트를 참조하십시오. 일반적인 응용 분야로는 전원 공급 장치 설계, 모터 구동, 부하 스위칭이 있습니다.
다음에 대한 상세 핀아웃 데이터 없음: STA500.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
STA500 적합 용도: 6 애플리케이션s: Stereo Class D Audio Amplifier, Multichannel Powered Speaker, Portable Speaker and Battery Amplifier, Powered Headphone Output, Subwoofer Power Stage, Class D Industrial Signal Output.
Stereo Class D Audio Amplifier
The STA500 fits a stereo Class D output stage because its four complementary DMOS half bridges can be paired into two differential bridge channels. With a 30 V maximum supply and 3.5 A device rating, the IC is suited to compact speaker amplifiers whose load, output power, and thermal duty cycle remain inside the datasheet limits. Connect the four outputs to the two bridge networks and filter each differential output. Compared with a discrete four-MOSFET stage, the monolithic quad arrangement can reduce board area, but the PCB still needs a large thermal copper area and carefully minimized switching-current loops.
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Multichannel Powered Speaker
A four-channel active-speaker architecture can use the STA500 in its quad configuration, allowing four switched outputs to be arranged as two stereo pairs or as multiple half-bridge channels. The 200 mΩ complementary DMOS output stage and 3.5 A headline current capability are useful when driving low-impedance speakers, although continuous output must be calculated from RMS dissipation and ambient temperature. The design benefit is integration: fewer external power transistors and drivers are required. Thermal performance remains critical, so the exposed pad should connect to uninterrupted ground-plane copper and the output routing should avoid narrow necks.
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Portable Speaker and Battery Amplifier
The STA500 is appropriate for a battery-powered portable speaker when the battery and charger stay below the device's 30 V maximum supply rating and the amplifier load is compatible with its 3.5 A output capability. Its integrated quad half-bridge arrangement supports efficient Class D conversion, while CMOS-compatible logic inputs simplify control from a digital audio processor. Designers must account for transient behavior during battery connection and load changes, validate the CONFIG state at startup, and add output filtering appropriate to the speaker and electromagnetic-emissions requirements.
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Powered Headphone Output
The STA500 can implement a differential Class D headphone stage because a bridge arrangement provides balanced, bridged output and allows two output half bridges to drive a single load. Its complementary DMOS outputs and configurable topology support compact amplification without a discrete output transistor network. The practical trade-off is power: the 30 V and 3.5 A ratings allow substantial capability, but headphone loads can demand precise current limiting and low distortion. The amplifier should include the manufacturer-recommended input and output networks, and output-current behavior must be checked against the actual impedance and waveform.
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Subwoofer Power Stage
For a subwoofer amplifier, the STA500's bridge outputs can drive a low-impedance speaker while the 3.5 A rating provides a useful basis for current-limit and thermal analysis. The monolithic quad structure offers the option of allocating two half bridges to the subwoofer and using the remaining stages for another channel or configuration, subject to the CONFIG and pin constraints in the datasheet. Output-filter component selection is critical because class-D carrier harmonics can disturb the speaker. Copper spreading under PowerSO-36 and low-inductance routing are as important as nominal output-current capability.
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Class D Industrial Signal Output
The STA500 can support compact industrial signal-output stages where a low-voltage differential speaker or line load is driven by a bridge network. Its CMOS-compatible inputs allow direct control from industrial logic, while output overvoltage, undervoltage, thermal warning, and shutdown functions add useful fault detection. The 30 V maximum supply leaves little margin for an unregulated 30 V source, so the system must include regulation or a clamp and verify transients. This use also requires an EMC-focused layout, controlled ground return paths, and filtering that preserves the intended signal bandwidth.
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추천 제품 요약
엔지니어링 참조 데이터: STA500 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
설계 노트
Treat the 3.5 A rating as a device limit, not a continuous-load target. Calculate RMS output current and conduction loss for the selected bridge mode, then derate against ambient temperature using the manufacturer thermal data. Provide uninterrupted copper beneath the PowerSO-36 exposed pad, thermal vias where recommended, and avoid narrow thermal-copper necks. Because the supplied snippets do not include junction-to-ambient resistance or SOA curves, use the full datasheet before setting copper area or current limits.
Keep each half-bridge's high-current switching loop compact. Place input and decoupling capacitors at their associated power pins, route supply and ground with low inductance, and keep the exposed-pad ground connection free of cuts. The output network should transition directly into the intended filter rather than sharing narrow traces with unrelated signals. This reduces switching-edge overshoot, ground bounce, EMI, and the chance that a nominally capable 3.5 A stage becomes current-limited by PCB resistance.
Do not treat the 30 V rating as normal operating headroom. Confirm the maximum supply, CONFIG voltage, input thresholds, and output transients against the absolute-maximum and recommended-operation tables. In single-bridge mode, connect CONFIG to VDD exactly as specified; in binary mode, verify the pin states and timing from the relevant diagrams. Misconfigured logic can create an unintended bridge path or stress an output stage outside the intended operating mode.
규정 준수 정보
The supplied verified snippets do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable because the device is an audio power-stage IC rather than an automotive-qualified component in the supplied data.
