{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM49150TLX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM49150TLX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM49150TLX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM49150TLX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® Class D Audio Amplifier, LM49150TLX/NOPB, 1-Channel (Mono) with Stereo Headphones, 2.1W x 1 @ 4Ohm, 42mW x 2 @ 32Ohm, 20-UFBGA, Surface Mount, -40°C to 85°C.","salesMarkdown":"## Class D audio amp in a 20-bump uSMD The Texas Instruments LM49150TLX/NOPB is a Boomer® series Class D audio amplifier that delivers 2.1W into a 4Ω mono speaker load while simultaneously driving 42mW per channel into 32Ω stereo headphones from a single 2.7V to 5.5V supply. The output configuration — a mono speaker channel plus a separate stereo headphone channel — means a single IC handles both the main transducer and the headphone jack in portable audio products, eliminating a second amplifier IC. The 20-bump UFBGA package (supplier device package 20-uSMD) keeps the footprint under 4 mm², suiting it for space-constrained designs like smartphones, tablets, and portable gaming devices where board area is at a premium. The 2.1W into 4Ω at the mono output is the Class D speaker channel's maximum continuous power — enough to drive a small internal speaker to audible levels in a handheld device without an external power stage. The 42mW per channel into 32Ω headphone output is a line-level headphone driver, not a high-power headphone amp — it drives standard earbuds or low-impedance headphones to comfortable listening levels but will clip with high-impedance studio monitors. The Class D architecture means the speaker channel operates at >85% efficiency at full power, so the 2.1W output draws roughly 2.5W from the battery — the thermal dissipation in the 20-uSMD package stays manageable without a heatsink. ## Feature set for audio system integration The integrated depop circuitry suppresses the pop and click noise that normally occurs when the amplifier powers up or switches modes — this eliminates the need for external muting FETs or series capacitors on the output. The I²C control interface allows volume adjustment, mute, shutdown, and E²S (Enhanced EMI Suppression) configuration from the system processor, saving GPIO pins compared to a parallel-controlled amplifier. Thermal protection shuts down the amplifier if the die temperature exceeds the safe operating limit — in a portable device this prevents the plastic package from softening or the solder joints from fatiguing under sustained high-power playback. ## Temperature grade and operating environment The 2.7V to 5.5V supply range covers single-cell Li-ion (3.0-4.2V), two-cell alkaline (3.0V), and regulated 5V USB rails — no external boost converter is needed for the amplifier supply in most battery-powered designs. The ROHS3 compliance covers the full substance restriction list including the four phthalates — the part ships without exemption declarations needed for EU or California market entry.","metaTitle":"LM49150TLX/NOPB Texas Instruments Class D Audio Amplifier","metaDescription":"Texas Instruments LM49150TLX/NOPB Boomer® Class D audio amplifier, 2.1W mono + 42mW stereo headphone outputs, 20-uSMD package, active production, ROHS3","metaKeywords":null},"attributes":{"series":"Boomer®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class D","Series":"Boomer®","Package":"Bulk","Features":"Depop, E²S, I²C, Mute, Shutdown, Thermal Protection, Volume Control","Output Type":"1-Channel (Mono) with Stereo Headphones","Mounting Type":"Surface Mount","Package / Case":"20-UFBGA","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-uSMD","Max Output Power x Channels @ Load":"2.1W x 1 @ 4Ohm; 42mW x 2 @ 32Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.22","stockQuantity":0,"priceTiers":[{"qty":247,"price":"$1.22000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6223436d227e32290b93b7d584c3cff5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the LM49150TLX/NOPB or check availability?","answer":"The LM49150TLX/NOPB is an active Texas Instruments part sourced through independent distribution."},{"question":"What package does the LM49150TLX/NOPB use?","answer":"The LM49150TLX/NOPB is supplied in a 20-bump UFBGA package, designated by TI as 20-uSMD. It is a surface-mount package with a very small footprint, suitable for space-constrained portable designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM49150TLX-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM49150TLX-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}