{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4809LQX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4809LQX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4809LQX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4809LQX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® LM4809LQX/NOPB, Class AB audio amplifier, stereo headphone output, 105mW x 2 @ 16Ω, 2V to 5.5V supply, -40°C to 85°C, 8-WQFN Exposed Pad package, surface mount.","salesMarkdown":"## 105 mW per channel into 16 Ω — driving headphones from a 2 V rail The Texas Instruments LM4809LQX/NOPB is a Boomer® Class AB audio amplifier designed for stereo headphone output. The Class AB topology gives linearity with reasonable quiescent current — no switching noise, but you trade some efficiency versus a Class D part at higher output levels. The 8-WQFN Exposed Pad package (2x2 mm) keeps the footprint small, and the exposed pad helps pull heat out when driving low-impedance loads continuously. ## Supply voltage and temperature range — where this part lives No AEC-Q qualification is listed, so it is not graded for under-hood or safety-critical automotive paths, but the temperature range itself is fine for many non-automotive harsh environments. ## Package and mounting — 8-WQFN with exposed pad The 8-WQFN Exposed Pad package (2x2 mm body) is a surface-mount part. The supplier device package is 8-WQFN (2x2).","metaTitle":"LM4809LQX/NOPB Class AB Audio Amplifier, 105mW x 2 @ 16Ω","metaDescription":"Texas Instruments LM4809LQX/NOPB Boomer® Class AB stereo headphone amplifier, 105mW per channel into 16Ω, 2V-5.5V supply, -40°C to 85°C, 8-WQFN.","metaKeywords":null},"attributes":{"series":"Boomer®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Type":"Class AB","Series":"Boomer®","Package":"Bulk","Output Type":"Headphones, 2-Channel (Stereo)","Mounting Type":"Surface Mount","Package / Case":"8-WQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-WQFN (2x2)","Max Output Power x Channels @ Load":"105mW x 2 @ 16Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.23","stockQuantity":0,"priceTiers":[{"qty":1312,"price":"$0.23000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/75974573a6bc3340ba7ec79fd6e27bba.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM4809LQX/NOPB?","answer":"Within the Boomer® family, other stereo headphone amplifiers share the same Class AB topology but may differ in output power, supply range, or package. Verify the specific pinout and footprint against the datasheet before substituting."},{"question":"What is the output power of LM4809LQX/NOPB?","answer":"Maximum output power is 105 mW per channel into a 16 Ω load, stereo."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4809LQX-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/LM4809LQX-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}}