{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4819MM/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4819MM-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4819MM-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4819MM%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® Class AB mono audio amplifier, LM4819MM/NOPB, 350mW x 1 into 16Ω, 2V-5.5V supply, 8-VSSOP package, -40°C to 85°C, ROHS3.","salesMarkdown":"## 350 mW mono into 16 Ω — what that means for your load The LM4819MM/NOPB: The headline rating is 350 mW continuous output into a 16 Ω load from a single channel. That is the power delivered to the speaker, not the supply draw. For a portable device running on a 3.7 V Li-ion cell, this is enough for a headphone driver or a small internal speaker in a handheld terminal, alarm, or IoT voice-prompt module. The 16 Ω load is typical for earbud and miniature speaker drivers — a 32 Ω headphone would pull roughly half the power, extending battery life. ## Supply range and temperature — battery and environment fit The 2 V to 5.5 V supply range covers single-cell Li-ion (3.0-4.2 V), two-cell alkaline (2.4-3.0 V), or a regulated 3.3 V or 5 V rail. No external charge pump or boost converter is needed for the audio path. The -40°C to 85°C industrial temperature grade means it works in outdoor IoT gateways, automotive cabin (not under-hood), and factory-floor HMI panels — but not in engine-bay or high-temp sensor modules without derating. ## Feature set — depop, differential inputs, shutdown The depop circuit suppresses the turn-on thump that would otherwise couple into the speaker — a real concern in battery-powered devices where the amplifier powers up from a low-impedance source. Differential inputs reject common-mode noise picked up on the audio traces between the codec and the amp, which is useful when the PCB layout forces long analog runs near a switching regulator. The shutdown pin pulls the quiescent current to near-zero, extending standby life in a product that spends most of its time listening for a wake command. ## Package and footprint — 8-VSSOP, 0.65 mm pitch The LM4819MM/NOPB comes in an 8-VSSOP (also listed as 8-TSSOP / 8-MSOP with 0.118-inch, 3.00 mm width). The 0.65 mm lead pitch is standard for this package class — two-layer boards with 6/6 mil trace/space rules fan it out without micro-vias. The exposed pad on the VSSOP variant is not a thermal pad here; the 350 mW output does not generate enough heat to need one, but the pad should still be tied to the ground plane for mechanical stability and to avoid floating-metal issues. ## Sourcing and compliance ROHS3 compliant (no exemptions) — no conflict with EU or similar regulatory markets. The part is available in Tape & Reel (TR) or Cut Tape (CT) for prototyping. For a BOM that already uses this footprint, the LM4819MM/NOPB is the direct, active-production choice. Quoted to order against your BOM quantity; availability and current pricing confirmed at RFQ time.","metaTitle":"TI LM4819MM/NOPB Class AB Audio Amp, 350mW, 8-VSSOP","metaDescription":"Texas Instruments LM4819MM/NOPB Boomer® Class AB mono amplifier, 350mW into 16Ω, 2-5.5V supply, -40 to 85°C, 8-VSSOP. Active production, ROHS3. Request quote.","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, Differential Inputs, Shutdown","Output Type":"1-Channel (Mono)","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-VSSOP","Max Output Power x Channels @ Load":"350mW x 1 @ 16Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.68","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.68000","currency":"USD"},{"qty":10,"price":"$1.50500","currency":"USD"},{"qty":25,"price":"$1.42840","currency":"USD"},{"qty":100,"price":"$1.17350","currency":"USD"},{"qty":250,"price":"$1.09696","currency":"USD"},{"qty":500,"price":"$0.96940","currency":"USD"},{"qty":1000,"price":"$0.63759","currency":"USD"},{"qty":2000,"price":"$0.60150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ddd7b685bd6bde4d13db8d72e747e393.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4819MM-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/LM4819MM-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}}