{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4946TMX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4946TMX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4946TMX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4946TMX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® Class AB audio amplifier, LM4946TMX/NOPB, 1-Channel (Mono) with Stereo Headphones, 1.3W x 1 @ 8Ohm, 2.7V ~ 5.5V supply, 25-WFBGA, Surface Mount, Bulk.","salesMarkdown":"## 1.3W mono into 8Ω — speaker load and headphone drive in one BGA The LM4946TMX/NOPB is a Texas Instruments Boomer® Class AB audio amplifier that delivers 1.3W into an 8Ω speaker from a single mono channel, while also providing a separate stereo headphone output path — a dual-zone architecture that lets a single IC drive both the main speaker and the headphone jack in a portable device. ## Active lifecycle — no end-of-life watch for this BOM line ROHS3 compliant, so it clears EU regulatory gates without an exemption review. Qualifying the alternate now would mean a board-level evaluation against another Boomer® or third-party Class AB amp in a similar BGA footprint. ## 25-BGA footprint — board-level routing and thermal considerations Housed in a 25-ball WFBGA measuring 2.01 x 2.01 mm (supplier device package 25-BGA), the part demands a fine-pitch BGA layout — the 0.4 mm or 0.5 mm ball pitch typical of this package class requires at least a 4-layer PCB for fan-out of the inner balls, with via-in-pad or microvia techniques if the design is space-constrained.","metaTitle":"Texas Instruments LM4946TMX/NOPB Class AB Audio Amp, 1.3W","metaDescription":"Texas Instruments LM4946TMX/NOPB Boomer® Class AB audio amplifier, 1.3W mono into 8Ω, 2.7V-5.5V supply, 25-BGA, active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":"Boomer®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class AB","Series":"Boomer®","Package":"Bulk","Output Type":"1-Channel (Mono) with Stereo Headphones","Mounting Type":"Surface Mount","Package / Case":"25-WFBGA","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"25-BGA (2.01x2.01)","Max Output Power x Channels @ Load":"1.3W x 1 @ 8Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.5","stockQuantity":0,"priceTiers":[{"qty":121,"price":"$2.50000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9562e06ea7752de5e81dfb6ea7f30c23.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output power of LM4946TMX/NOPB into 8 ohms?","answer":"It delivers 1.3W into an 8Ω load from the mono channel — this is the maximum output power per channel specified at the given load impedance."},{"question":"Can LM4946TMX/NOPB operate with a 3.3V supply?","answer":"Yes — the supply voltage range is 2.7V to 5.5V, so a 3.3V rail is well within the operating window."},{"question":"Is LM4946TMX/NOPB obsolete or still active?","answer":"It is listed as Active by Texas Instruments — no discontinuation notice has been issued."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4946TMX-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/LM4946TMX-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}}