{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMS1587ISX-ADJ","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMS1587ISX-ADJ","canonicalUrl":"https://icboms.com/texas-instruments/LMS1587ISX-ADJ","factsUrl":"https://icboms.com/api/mcp/products/LMS1587ISX-ADJ","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMS1587ISX-ADJ, adjustable positive linear regulator, 3A output, 1.3V max dropout at 3A, 72dB PSRR at 120Hz, -40°C to 125°C, DDPAK/TO-263-3, surface mount.","salesMarkdown":"## 3A adjustable LDO in a DDPAK — what it is and where it fits The LMS1587ISX-ADJ is a single-output, adjustable positive linear regulator rated for 3A continuous output. Its maximum dropout voltage is 1.3V at 3A. ## Dropout voltage at 3A — the headroom number that matters The 1.3V maximum dropout at 3A is the spec that decides whether this regulator holds regulation under brownout or with a sagging input rail. ## PSRR at 120 Hz — ripple rejection for post-rectifier rails 72dB PSRR at 120Hz means the regulator attenuates full-wave-rectified ripple. ## Package and rework — DDPAK/TO-263-3 The DDPAK/TO-263-3 is a surface-mount tabbed package with three leads plus the tab. ## Protection features — over-current and thermal shutdown Built-in over-current and over-temperature protection mean the regulator survives a shorted output or a stalled fan without failing. ## Lifecycle and sourcing It is RoHS non-compliant, which may restrict use in EU RoHS-regulated markets unless an exemption applies — check your local compliance requirements.","metaTitle":"LMS1587ISX-ADJ Adjustable Regulator, 3A, 1.3V Dropout, DDPAK","metaDescription":"LMS1587ISX-ADJ adjustable positive LDO, 3A output, 1.3V max dropout at 3A, 72dB PSRR at 120Hz, -40°C to 125°C, DDPAK/TO-263-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"72dB (120Hz)","Package":"Bulk","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-263-4, D²Pak (3 Leads + Tab), TO-263AA","lifecycle_stage":"eol_hot","Current - Output":"3A","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"13V","Voltage Dropout (Max)":"1.3V @ 3A","Voltage - Output (Max)":"11.7V","Supplier Device Package":"DDPAK/TO-263-3","Current - Quiescent (Iq)":"13 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.37","stockQuantity":0,"priceTiers":[{"qty":219,"price":"$1.37000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e0ccdfb5d91d36efb2e2db73427402f0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum output current for LMS1587ISX-ADJ?","answer":"The regulator is rated for 3A continuous output current."},{"question":"Is LMS1587ISX-ADJ pin compatible with LM1085?","answer":"The LMS1587ISX-ADJ and LM1085 share the same TO-263-3 pinout (adjust, input, output, tab is output) and are generally pin-compatible, but verify the compensation and output capacitor requirements from each datasheet — the LM1085 may need a different minimum load or capacitor ESR for stability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMS1587ISX-ADJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMS1587ISX-ADJ 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}}