{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4927SD/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4927SD-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4927SD-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4927SD%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® series, LM4927SD/NOPB Class AB audio amplifier, 1-Channel (Mono), 2.5W x 1 @ 4Ohm, 2.4V ~ 5.5V supply, 8-WFDFN Exposed Pad (8-WSON 3x3), Surface Mount, Bulk.","salesMarkdown":"## 2.5W mono into 4Ω — what the output rating means for your load The LM4927SD/NOPB: Rated 2.5W continuous into a 4Ω load from a single channel, this Class AB amplifier delivers enough drive for a portable speaker, alarm tone generator, or headphone amplifier where moderate volume and low distortion matter. Class AB topology gives better linearity than Class D at the cost of lower efficiency — expect higher quiescent current draw at idle compared to a switching amplifier, but cleaner output across the audio band. ## Supply range and thermal management for the WSON package Operates from 2.4V to 5.5V, covering a single-cell Li-ion battery (3.0-4.2V) through a regulated 5V USB rail — no external boost converter needed for most portable applications. The 8-WSON (3x3 mm) exposed-pad package requires the thermal pad to be soldered to a PCB copper plane for heat dissipation. Without it, the junction temperature rises above the 85°C ambient limit at full output. Industrial temperature range of -40°C to +85°C ambient suits outdoor IoT audio alerts, automotive cabin chimes, or industrial panel buzzers where the enclosure sees seasonal extremes. ## Pop suppression and fault protection built in Depop circuitry suppresses the turn-on thump that otherwise couples through the speaker — no external muting FET needed on the output. Differential inputs reject common-mode noise picked up on long signal traces from the codec or DAC output, and the shutdown pin lets a GPIO or power-management IC cut the amplifier supply when audio is idle. Thermal protection shuts down the output stage if the die exceeds the safe junction temperature, preventing damage from a shorted speaker or sustained clipping.","metaTitle":"LM4927SD/NOPB Texas Instruments Class AB Audio Amp","metaDescription":"Texas Instruments LM4927SD/NOPB Class AB audio amplifier, 2.5W mono into 4Ω, 2.4-5.5V supply, WSON-8 package. Active production, sourced per RFQ.","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, Differential Inputs, Shutdown, Thermal Protection","Output Type":"1-Channel (Mono)","Mounting Type":"Surface Mount","Package / Case":"8-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2.4V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-WSON (3x3)","Max Output Power x Channels @ Load":"2.5W x 1 @ 4Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.92","stockQuantity":0,"priceTiers":[{"qty":327,"price":"$0.92000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/830cc563c894aba3c9fe1a0fab347a12.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum output power of LM4927SD/NOPB?","answer":"2.5W continuous into a 4Ω load from a single mono channel, with a 2.4V to 5.5V supply range."},{"question":"What package does LM4927SD/NOPB use and what are the layout considerations?","answer":"8-WSON (3x3 mm) with an exposed thermal pad. The pad must be soldered to a PCB copper plane for heat sinking — without it, full-power operation at 85°C ambient risks thermal shutdown."},{"question":"What features does this amplifier include to reduce pop and protect against faults?","answer":"Depop circuitry eliminates turn-on thump, differential inputs reject common-mode noise, a shutdown pin allows idle power savings, and thermal protection prevents die damage from overloads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4927SD-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/LM4927SD-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}}