{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4921ITL/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4921ITL-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4921ITL-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4921ITL%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® series, LM4921ITL/NOPB, Class AB stereo headphone amplifier, 50mW x 2 into 32Ω, I²S/SPI digital input, 2.6V–5.5V supply, -40°C to 85°C, 20-DSBGA package.","salesMarkdown":"## Class AB headphone driver with digital audio interface On-chip features include mute, shutdown, standby, thermal protection, and volume control, all accessible through the digital interface. The industrial temperature grade (-40°C to 85°C) covers outdoor telecom, portable test gear, and automotive cabin audio applications. ## 50 mW into 32 Ω — what that means for the BOM The 50 mW per channel into 32 Ω is the headline output rating. The digital input (I²S/SPI) means the upstream processor or FPGA sends audio data directly, saving the cost and board area of an external DAC. ## Active lifecycle — no obsolescence contingency needed The LM4921ITL/NOPB is listed as Active with ROHS3 compliance. There is no NRND or last-time-buy notice on this part, so procurement can qualify it into a production BOM without planning for a near-term replacement. ## Sourcing and availability This part is sourced through independent distribution and quoted to order against an RFQ. Because the lifecycle is Active and there is no EOL risk, the lead time is generally stable — submit an RFQ for the quantity and target delivery window.","metaTitle":"LM4921ITL/NOPB Class AB Stereo Headphone Amp, 50mW, I²S/SPI","metaDescription":"LM4921ITL/NOPB from TI Boomer® series: Class AB stereo headphone amplifier, 50mW x 2 into 32Ω, I²S/SPI digital input, 2.6-5.5V supply, -40 to 85°C.","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":"DAC, I²S, Mute, Shutdown, SPI, Standby, Thermal Protection, Volume Control","Output Type":"Headphones, 2-Channel (Stereo)","Mounting Type":"Surface Mount","Package / Case":"20-WFBGA, DSBGA","lifecycle_stage":"eol_hot","Voltage - Supply":"2.6V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-DSBGA","Max Output Power x Channels @ Load":"50mW x 2 @ 32Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.06","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.06000","currency":"USD"},{"qty":10,"price":"$3.64300","currency":"USD"},{"qty":25,"price":"$3.44360","currency":"USD"},{"qty":100,"price":"$2.98440","currency":"USD"},{"qty":250,"price":"$2.71404","currency":"USD"},{"qty":500,"price":"$2.43528","currency":"USD"},{"qty":1250,"price":"$2.07600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/58d0212bf21e6e6563c98d07fc0f1061.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output power of LM4921ITL/NOPB?","answer":"The LM4921ITL/NOPB delivers 50 mW per channel into a 32 Ω load, stereo."},{"question":"Does LM4921ITL/NOPB have an I2S interface?","answer":"Yes, the LM4921ITL/NOPB includes an I²S digital audio interface, along with SPI for control, mute, shutdown, standby, and volume control."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4921ITL-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/LM4921ITL-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}}