{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4917SD/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4917SD-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4917SD-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4917SD%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® Series Class AB stereo headphone amplifier, LM4917SD/NOPB, 95mW x 2 into 16Ω, 1.4V-3.6V supply, 14-WSON (4x3) package, surface mount, Bulk.","salesMarkdown":"## 95 mW per channel into 16 Ω — the drive budget for portable audio The LM4917SD/NOPB delivers 95 mW per channel into a 16 Ω load — enough to drive consumer-grade headphones to comfortable listening levels from a 1.4 V to 3.6 V supply rail, typical of a single Li-ion cell or two alkaline cells in series. As a Class AB output stage, it avoids the crossover distortion of Class B while keeping quiescent current lower than a pure Class A design — the right trade-off for battery-powered portable audio where THD matters at low signal levels. The 14-WSON package (4 mm x 3 mm) with exposed pad pulls heat into the PCB copper plane, so the thermal budget for continuous playback depends on the board's copper area under the pad. ## Supply range and shutdown — designed for single-cell battery rails Operating from 1.4 V to 3.6 V, the amplifier starts working before a Li-ion cell hits its undervoltage lockout and survives the full charge voltage — no external regulator needed if the battery is the only supply. The shutdown feature (pin-controlled) drops the quiescent current to near-zero for power gating between audio bursts — critical in a wearable or IoT device where the amplifier spends most of its time idle. Depop circuitry suppresses the turn-on/turn-off thump that would otherwise couple into the headphones — a real concern in portable designs where the amplifier cycles on and off with the audio stream. ## Industrial temperature grade and protection — not just a consumer part Rated for -40°C to +85°C ambient, the amplifier holds its bias and output swing across the industrial temperature range — a dash-mounted audio player or outdoor handheld terminal stays within spec on a hot summer dashboard or a cold warehouse floor. Integrated short-circuit and thermal protection means the output stage folds back before the die reaches destructive temperature — the part survives a headphone jack short without latching up or requiring a reset.","metaTitle":"LM4917SD/NOPB Texas Instruments Class AB Headphone Amp","metaDescription":"Texas Instruments LM4917SD/NOPB Class AB stereo headphone amplifier, 95mW x 2 into 16Ω, 1.4V-3.6V supply, 14-WSON package.","metaKeywords":null},"attributes":{"series":"Boomer®","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Type":"Class AB","Series":"Boomer®","Package":"Bulk","Features":"Depop, Short-Circuit and Thermal Protection, Shutdown","Output Type":"Headphones, 2-Channel (Stereo)","Mounting Type":"Surface Mount","Package / Case":"14-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"1.4V ~ 3.6V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"14-WSON (4x3)","Max Output Power x Channels @ Load":"95mW x 2 @ 16Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.73","stockQuantity":0,"priceTiers":[{"qty":174,"price":"$1.73000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/36ab3ca016ad03c531bd589b2e75723c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output power of the LM4917SD/NOPB into 16 Ω headphones?","answer":"The amplifier delivers 95 mW per channel into a 16 Ω load, which is the rated maximum output power at the specified supply voltage range."},{"question":"What protection features does the LM4917SD/NOPB include?","answer":"The part includes short-circuit protection, thermal shutdown, and depop circuitry to suppress turn-on/turn-off transients."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4917SD-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/LM4917SD-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}}