IRS2461SXUMA1 - 1-Channel Class-D Audio Amp | Infineon
MPN： IRS2461SXUMA1 ✓ 啟用中IRS2461SXUMA1 概覽
A Class-D audio amplifier is a switching power amplifier that uses transistor switching stages to deliver audio energy to a speaker. Compared with a linear audio amplifier, the Class-D category is associated with high conversion efficiency, but the verified data supplied for IRS2461SXUMA1 does not state output power, efficiency, switching frequency, THD+N, load impedance, or thermal limits. Those parameters must therefore be confirmed in the manufacturer datasheet before sizing a speaker, selecting a heatsink, or setting gain.
The verified package information is specific: Infineon lists the IRS2461S family in a 20-lead SOIC package. The 20-lead package is suitable for conventional surface-mount PCB assembly, while the exact exposed-pad arrangement and pin functions are not present in the supplied data. The LCSC result reports availability from $2.4487, and Heisener reports a reference unit price of $3.4419 with 7,536 pieces in stock; these commercial figures are retained as separate source observations and are not treated as a universal price quote.
Typical design use places the analog audio input at the amplifier, with speaker-drive connections and bypass or support networks selected according to the manufacturer reference design. The exact input sensitivity, gain settings, filter values, supply limits, and pin mapping are unavailable in the provided sources. Engineers should use the official Infineon IRS2461S documentation and validate acoustic output, distortion, thermal behavior, and EMI performance in the final enclosure.
This page emphasizes verified sourcing information and clearly identifies missing technical fields rather than estimating them. It combines the manufacturer product classification, distributor observations, package information, application context, and engineering caveats for engineers evaluating an audio amplifier IC.
直接替換替代品，適用於 IRS2461SXUMA1 — 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。
IRS2461S
✅ 直接替換📋 參考替代品（不在目錄中）
IRS2461SXUMA1 最大額定值與電氣特性
| Product Type | Discrete Class-D audio amplifier IC |
| Speaker Channels | 1 channel |
| Audio Input Type | Analog |
| 封裝 | 20-lead SOIC |
| Channel Count | 1 |
| Device Category | Audio Amplifier IC |
| Amplifier Topology | Class-D |
| Surface-Mount Package | SOIC-20 |
| Input Signal | Analog audio input |
| Manufacturer | Infineon Technologies |
| LCSC Part Number | C4991367 |
| LCSC Reported Price | $2.4487 |
| Heisener Reported Unit Price | $3.4419 |
| Heisener Reported Stock | 7,536 pieces |
IRS2461SXUMA1 soic-20 腳位配置指南
IRS2461SXUMA1（soic-20 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： IRS2461SXUMA1.
請參閱 資料表 以查看完整腳位配置。
典型應用
IRS2461SXUMA1 適用於 6 應用s: Portable Bluetooth Speaker, Compact Soundbar Speaker Module, USB-Powered Desktop Speaker, Consumer Audio Auxiliary Amplifier, Soundbar Subwoofer Channel, Industrial Announcement Speaker Driver.
Portable Bluetooth Speaker
IRS2461SXUMA1 is a candidate amplifier IC for a portable Bluetooth speaker because the verified Infineon listing identifies a 1-channel discrete Class-D audio amplifier with an analog input. It can be positioned after the audio codec or DAC and before the speaker, allowing the amplifier stage to handle the power drive function while the upstream codec controls volume and source selection. The design must still verify output power, speaker impedance, battery voltage range, thermal behavior, and output filtering, because those values are not included in the supplied sources.
推薦
Compact Soundbar Speaker Module
The IRS2461SXUMA1 can serve as the power-amplifier element in a compact soundbar or monitor speaker when the system requires one independently driven speaker channel. Its verified 1-channel Class-D classification and analog input suit a signal chain that separates source decoding from speaker drive. The engineer should use the manufacturer reference design to determine gain, input filtering, speaker protection, EMI layout, and supply decoupling; the available data does not establish output wattage or distortion limits.
推薦
USB-Powered Desktop Speaker
For a USB-powered desktop speaker, IRS2461SXUMA1 is relevant where an analog codec output can feed a dedicated Class-D speaker driver. The device's verified analog-input interface supports a straightforward connection from a USB audio codec, while the one-channel configuration maps naturally to a small speaker enclosure. USB power availability, amplifier supply regulation, idle current, thermal rise, and acoustic limits must be verified before deployment because the provided sources do not state those values.
推薦
Consumer Audio Auxiliary Amplifier
IRS2461SXUMA1 can be evaluated for a consumer auxiliary or active-speaker design where the audio source is analog and only one speaker channel is required. Placing the amplifier after a volume-control or codec stage keeps the power conversion separate from source processing and can simplify the analog signal path. The design review should confirm input range, gain distribution, speaker impedance, protection strategy, and thermal performance from the full Infineon datasheet, since none of those values is supplied by the search results.
推薦
Soundbar Subwoofer Channel
The one-channel Class-D architecture makes IRS2461SXUMA1 a candidate for a subwoofer or single-driver channel in a soundbar architecture. The amplifier can receive an analog line-level signal from the soundbar signal-processing chain and drive the selected speaker through the vendor-recommended output network. A subwoofer design especially requires verified minimum load impedance, continuous and peak power, thermal derating, and protection behavior; these specifications are unavailable in the supplied data and must be obtained from Infineon before schematic approval.
推薦
Industrial Announcement Speaker Driver
IRS2461SXUMA1 may be considered for a low-voltage industrial announcement or paging speaker when the source is analog and the system needs one Class-D output channel. Its surface-mount 20-lead SOIC package supports conventional PCB assembly and can simplify integration compared with a discrete switching stage. Industrial use still requires confirmation of supply tolerance, EMI behavior, temperature range, isolation expectations, speaker impedance, and protective shutdown behavior; those requirements are not established by the supplied web data.
推薦
推薦產品摘要
工程參考資料，適用於 IRS2461SXUMA1 — 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 | IRS2461S |
|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies |
| Package | 20-lead SOIC | 20-lead SOIC |
| Product Type | Discrete Class-D audio amplifier IC | Discrete Class-D audio amplifier IC |
| Speaker Channels | 1 channel | 1 channel |
| Audio Input Type | Analog | Analog |
主要差異化特點
- Single-channel Class-D architecture (對比IRS2461S)
- Analog input interface (對比IRS2461S)
- 20-lead SOIC integration (對比IRS2461S)
設計說明
Use the Infineon IRS2461S reference layout as the starting point for the 20-lead SOIC footprint. Keep the amplifier power-loop and speaker-output return paths compact, route sensitive analog input traces away from switching-node copper, and provide local supply bypassing at the device pins. The supplied data confirms the package but does not provide exact pin names or layout guidance, so the official datasheet must control the final fanout and copper geometry.
Thermal design cannot be finalized from the supplied sources because output power, efficiency, thermal resistance, and maximum junction temperature are not provided. Before production, calculate worst-case conduction and switching-related dissipation from the confirmed datasheet operating limits, then validate the SOIC land pattern, copper area, airflow, and enclosure temperature. Estimated calculations should use the actual supply voltage, output power, efficiency, and ambient temperature selected for the product.
Do not select IRS2461SXUMA1 solely from its channel count and Class-D label. Confirm speaker impedance, required output power, supply range, input sensitivity, gain configuration, THD+N, and protection requirements from the manufacturer datasheet. Also verify whether the chosen order code is a leaded or tape-and-reel variant and confirm the exact package drawing before releasing artwork.
合規資訊
The supplied search snippets mention ROHS in third-party listings, but the verified manufacturer result and internal data do not provide an explicit compliance declaration. Compliance fields are therefore left unknown. SOA is not applicable to this audio amplifier IC.
