{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4889MAX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4889MAX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4889MAX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4889MAX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® Series, Class AB Audio Amplifier, 1-Channel (Mono), 1W x 1 @ 8Ohm, 2.2V ~ 5.5V, Surface Mount, 8-SOIC, -40°C ~ 85°C.","salesMarkdown":"## Class AB mono amplifier for portable audio — 1W into 8Ω The LM4889MAX/NOPB: Class AB topology gives a clean trade-off: lower crossover distortion than Class B and better efficiency than Class A, though not as power-efficient as Class D. For a battery-powered design where audio quality matters more than milliwatts of quiescent loss, this is the right choice. The built-in Depop circuitry suppresses the click and pop on power-up and shutdown — a feature that saves an external mute circuit on the BOM. ## Supply voltage and output power — sizing the rail and speaker Thermal Protection is included on-die: if the junction temperature exceeds the limit, the output stage reduces drive. In a sealed enclosure with limited airflow, this prevents catastrophic failure during a sustained high-volume test. The Shutdown pin lets a microcontroller put the amp into a low-power idle state when the audio path is silent, saving battery current.","metaTitle":"LM4889MAX/NOPB TI Class AB Audio Amp, 1W Mono 8-SOIC","metaDescription":"Texas Instruments LM4889MAX/NOPB Boomer® Class AB audio amplifier, 1W mono output into 8Ω, 2.2V–5.5V supply, -40°C to 85°C. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"Boomer®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"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-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.2V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Max Output Power x Channels @ Load":"1W x 1 @ 8Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.68","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.68000","currency":"USD"},{"qty":10,"price":"$1.50100","currency":"USD"},{"qty":25,"price":"$1.42480","currency":"USD"},{"qty":100,"price":"$1.17020","currency":"USD"},{"qty":250,"price":"$1.09392","currency":"USD"},{"qty":500,"price":"$0.96672","currency":"USD"},{"qty":1000,"price":"$0.76320","currency":"USD"},{"qty":2500,"price":"$0.72000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0b16899d0307cf292e896f65633baff1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM4889MAX/NOPB equivalent to LM4889MT?","answer":"The LM4889MT is the same die in a different package (TSSOP-8) and may have a different tape/reel suffix. The LM4889MAX/NOPB is the 8-SOIC variant. Functionally they are equivalent, but verify the package footprint matches your board layout before substituting."},{"question":"Can LM4889MAX/NOPB be used in 3V systems?","answer":"Yes, the supply range is 2.2V to 5.5V, so it operates directly from a 3V or 3.3V rail without a boost converter. Output power will be lower than at 5V, but it still drives an 8Ω speaker to adequate volume for portable audio."},{"question":"What is the typical application for LM4889MAX/NOPB?","answer":"Typical applications include portable speakers, voice-alert modules, handheld radios, and any battery-powered device needing a mono audio amplifier with low pop noise and thermal protection."},{"question":"What is LM4889MAX/NOPB's listed type (Class AB) on this component line?","answer":"The LM4889MAX/NOPB is a Class AB audio amplifier. Class AB offers a good balance of linearity and efficiency for audio applications where sound quality matters more than the power savings of Class D."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4889MAX-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/LM4889MAX-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}}