{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L5987ATR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L5987ATR","canonicalUrl":"https://icboms.com/stmicroelectronics/L5987ATR","factsUrl":"https://icboms.com/api/mcp/products/L5987ATR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L5987ATR, Step-Down Buck Regulator, 3A, Adjustable Output 0.6V to 18V, 8-SOIC Exposed Pad (8-HSOP), Tape & Reel.","salesMarkdown":"## Device identity and key parametrics The L5987ATR is a step-down (buck) switching regulator from STMicroelectronics, delivering up to 3 A from an input rail spanning 2.9 V to 18 V. The single positive output is configured for non-synchronous rectification, meaning an external Schottky catch diode handles the low-side current path. ## Switching frequency and thermal envelope The oscillator is programmable from 250 kHz to 1 MHz via an external resistor. A lower frequency reduces switching losses and improves efficiency at high input-to-output differentials, while a higher frequency shrinks the inductor and output capacitor footprint at the cost of increased gate-drive losses. Junction temperature rating spans -40°C to 150°C, placing this device in the industrial-automotive temperature band. Sourced to order against BOM quantities through independent and authorized distribution channels.","metaTitle":"L5987ATR STMicroelectronics Buck Regulator, 3A Adjustable","metaDescription":"STMicroelectronics L5987ATR active step-down regulator, 3A output, 2.9-18V input, adjustable 0.6-18V, 250kHz-1MHz, -40 to 150°C, 8-HSOP. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"3A","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"250kHz ~ 1MHz","Operating Temperature":"-40°C ~ 150°C (TJ)","Synchronous Rectifier":"No","Voltage - Input (Max)":"18V","Voltage - Input (Min)":"2.9V","Voltage - Output (Max)":"18V","Supplier Device Package":"8-HSOP","Voltage - Output (Min/Fixed)":"0.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.93","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.93000","currency":"USD"},{"qty":10,"price":"$2.63600","currency":"USD"},{"qty":25,"price":"$2.49160","currency":"USD"},{"qty":100,"price":"$2.15940","currency":"USD"},{"qty":250,"price":"$2.04864","currency":"USD"},{"qty":500,"price":"$1.83822","currency":"USD"},{"qty":1000,"price":"$1.55031","currency":"USD"},{"qty":2500,"price":"$1.47280","currency":"USD"},{"qty":5000,"price":"$1.41743","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/27364884bb9f328af7366ab11abfe1e1.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L5987ATR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L5987ATR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}