{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4953SDX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4953SDX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4953SDX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4953SDX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® Class AB Audio Amplifier, 1-Channel (Mono), 1.6V ~ 4.2V Supply, -40°C ~ 85°C, 14-WFDFN Exposed Pad / 14-WSON (4x3), Surface Mount, Bulk.","salesMarkdown":"## What the supply range means for battery-powered audio The LM4953SDX/NOPB is a Texas Instruments Boomer® Class AB audio amplifier with a 1.6V to 4.2V supply range that maps directly onto a single-cell Li-ion battery discharge curve — from full charge at 4.2V down to the 1.6V cutoff where most protection circuits trip. That means the amplifier keeps delivering audio output across the usable battery life without a boost converter in the path. ## Package thermal reality for the rework bench The exposed paddle is the primary heat path — if the board layout skips the thermal vias under the pad, the junction temperature climbs fast under continuous output. On the rework side, the small 4x3 mm body and leadless package need a hot-air profile with preheat; a standard soldering iron won't reach the center pad. The 1-channel mono output suits single-speaker or earpiece loads where stereo separation isn't needed. ## Active production and compliance The Boomer series has a long production history, so application notes and reference designs are available from TI.","metaTitle":"Texas Instruments LM4953SDX/NOPB Class AB Audio Amp","metaDescription":"Texas Instruments LM4953SDX/NOPB Class AB audio amplifier, 1-channel mono, 1.6V-4.2V supply, -40°C to 85°C, 14-WSON package. Active, ROHS3 compliant.","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)","Mounting Type":"Surface Mount","Package / Case":"14-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"1.6V ~ 4.2V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"14-WSON (4x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.25","stockQuantity":0,"priceTiers":[{"qty":241,"price":"$1.25000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3fd430dc037c49ced90d2b84ed7cc90d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does LM4953SDX/NOPB use?","answer":"The exposed pad requires thermal vias in the PCB layout for heat dissipation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4953SDX-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/LM4953SDX-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}}