{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM1117S-ADJ","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM1117S-ADJ","canonicalUrl":"https://icboms.com/texas-instruments/LM1117S-ADJ","factsUrl":"https://icboms.com/api/mcp/products/LM1117S-ADJ","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM1117S-ADJ, adjustable positive LDO regulator, 800 mA output, 1.2 V max dropout at full load, 75 dB PSRR at 120 Hz, TO-263-4 (D²Pak) surface-mount package, tube delivery.","salesMarkdown":"## Adjustable LDO for post-rectifier analog rails The LM1117S-ADJ is an adjustable positive LDO regulator from Texas Instruments, delivering up to 800 mA continuous output with a maximum dropout voltage of 1.2 V at that current. The single regulator output is positive configuration, with over-current and over-temperature protection built in. ## Dropout and headroom planning The 1.2 V maximum dropout at 800 mA sets the minimum input-to-output differential. The 5 mA quiescent current is moderate — acceptable for always-on rails where the load current dominates the power budget. Maximum input voltage is 15 V, and the supply current (including the pass-element drive) peaks at 10 mA. The part is also marked RoHS non-compliant, which may restrict its use in new EU-market designs. Sourcing is limited to independent-distributor inventory — franchised stock is exhausted. For volume requirements or long-term production, the buyer should evaluate pin-compatible alternatives within the LM1117 family or consider a drop-in from another vendor. The TO-263-4 (D²Pak) footprint is widely second-sourced; several manufacturers offer adjustable LDOs in the same package with similar dropout and current ratings. ## Package and mounting — D²Pak thermal considerations The TO-263-4 (D²Pak) surface-mount package with three leads plus a tab requires a copper pad on the PCB for thermal dissipation. The tab's solder profile follows standard lead-free reflow for large-body packages; a thermocouple on the tab during profile validation is recommended.","metaTitle":"LM1117S-ADJ LDO Regulator – Obsolete","metaDescription":"Texas Instruments LM1117S-ADJ adjustable LDO, 800 mA output, 1.2 V dropout, 75 dB PSRR at 120 Hz.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"75dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-263-4, D²Pak (3 Leads + Tab), TO-263AA","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"800mA","Base Product Number":"LM1117","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C~125°C","Voltage - Input (Max)":"15V","Voltage Dropout (Max)":"1.2V @ 800mA","Current - Supply (Max)":"10 mA","Voltage - Output (Max)":"13.8V","Supplier Device Package":"DDPAK/TO-263-3","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7800","priceTiers":[{"qty":385,"price":"$0.78000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9ba6e2e236039f5d3b1b5b4bfe9a5e64.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM1117S-ADJ/alternatives.json"},"ai":{"faq":[{"question":"How can I order LM1117S-ADJ or check availability?","answer":"The LM1117S-ADJ is marked Obsolete by Texas Instruments and RoHS non-compliant. No franchised stock remains. We source through independent-distributor inventory — submit an RFQ with your target quantity and we will confirm availability and pricing at quote time. Lead time is per the available lot; no stock-holding claim is made here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM1117S-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/LM1117S-ADJ when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T18:03:33.900Z","lastPublished":"2026-07-17T18:03:33.900Z","indexable":true}}