{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4890MM/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4890MM-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4890MM-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4890MM%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® LM4890MM/NOPB, Class AB audio amplifier, 1-Channel (Mono), 1W x 1 @ 8Ohm, 2.2V ~ 5.5V supply, -40°C ~ 85°C, 8-VSSOP package.","salesMarkdown":"## Active part, still a solid choice for portable audio The Texas Instruments LM4890MM/NOPB is a Class AB mono audio amplifier from the Boomer® series, rated for 1W into an 8Ω load. It runs on a 2.2V to 5.5V supply, so it fits single-cell Li-ion or 3.3V/5V rails without a regulator. ## Package and mounting 1W into 8Ω at 5V supply is typical for a small speaker in a portable device — think audio alerts, voice prompts, or a headphone driver. The Class AB topology gives clean audio with low crossover distortion, but it's less efficient than Class D, so the thermal pad on the 8-VSSOP needs a decent copper pour if you're pushing continuous 1W. The Depop feature suppresses the pop on power-up, which saves a firmware workaround. ## Supply and shutdown — practical points Supply range from 2.2V to 5.5V means it runs happily from a Li-ion cell down to near-empty. The Shutdown pin lets you cut quiescent current to near zero for battery life — tie it to a GPIO and you're set. Thermal Protection kicks in if the die gets too hot, so a shorted output won't smoke the part immediately. ## Lifecycle — no LTB worry It's ROHS3 compliant, so it passes current environmental requirements without issue.","metaTitle":"Texas Instruments LM4890MM/NOPB Class AB Audio Amp, 1W Mono","metaDescription":"Texas Instruments LM4890MM/NOPB is a Class AB audio amplifier delivering 1W into 8Ω mono. Active lifecycle, 2.2V–5.5V supply, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"Boomer®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Type":"Class AB","Series":"Boomer®","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Depop, Shutdown, Thermal Protection","Output Type":"1-Channel (Mono)","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.2V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-VSSOP","Max Output Power x Channels @ Load":"1W x 1 @ 8Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.80000","currency":"USD"},{"qty":10,"price":"$1.61800","currency":"USD"},{"qty":25,"price":"$1.52640","currency":"USD"},{"qty":100,"price":"$1.30050","currency":"USD"},{"qty":250,"price":"$1.22112","currency":"USD"},{"qty":500,"price":"$1.06848","currency":"USD"},{"qty":1000,"price":"$0.88531","currency":"USD"},{"qty":2000,"price":"$0.86400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8f721860ca77094f907e5b9fb251bf2f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM4890MM/NOPB obsolete?","answer":"No discontinuation notice has been issued."},{"question":"What is the closest pin-compatible alternative to LM4890MM/NOPB?","answer":"The LM4863 is a similar Boomer® audio amp, but it is a dual-channel (stereo) part in a different package. The LM4890MM/NOPB is a mono amplifier in 8-VSSOP; pin compatibility depends on the specific package and function. For a drop-in mono replacement, check the LM4890 in the same 8-VSSOP footprint — the LM4863 is not a direct pin-compatible substitute."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4890MM-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/LM4890MM-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}