{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM1117MPX-ADJ/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM1117MPX-ADJ-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM1117MPX-ADJ-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM1117MPX-ADJ%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM1117 series adjustable positive LDO regulator, 800 mA output, 1.25 V to 13.8 V adjustable range, 75 dB PSRR at 120 Hz, dropout 1.2 V max at full load, SOT-223 package, 0°C to 125°C operating temperature.","salesMarkdown":"The LM1117MPX-ADJ/NOPB adjustable LDO sets its output via an external resistor divider from a 1.25 V reference up to 13.8 V, with a 15 V input ceiling. The 1.2 V maximum dropout at 800 mA requires the input to stay at least that margin above the target output. ## 75 dB PSRR — ripple rejection for noise-sensitive rails That 75 dB of ripple attenuation at line frequency (120 Hz) knocks a 1 Vpp ripple down to roughly 0.18 mVpp at the output — clean enough to feed an analog front-end or a precision reference without a second-stage filter. The PSRR rolls off at higher frequencies, so for switching-regulator post-filtering, add a ferrite bead or a small RC at the input. ## Protection features and quiescent current On-chip over-current and over-temperature protection are included — the part folds back current and shuts down if the junction exceeds the thermal limit, then auto-recovers. That Iq is higher than modern CMOS LDOs, but acceptable for post-regulated rails where the load current dominates the power budget. Supplied in the SOT-223 surface-mount package, the LM1117MPX-ADJ/NOPB is rated for operation from 0°C to 125°C — the commercial-plus temperature range covers most indoor and industrial equipment that does not see extreme cold.","metaTitle":"Texas Instruments LM1117MPX-ADJ/NOPB Adjustable LDO, 800 mA","metaDescription":"Texas Instruments LM1117MPX-ADJ/NOPB adjustable LDO regulator, 800 mA output, 1.25 V to 13.8 V range, 75 dB PSRR at 120 Hz. SOT-223 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"75dB (120Hz)","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","Product Status":"Active","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":"SOT-223","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4100","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM1117MPX-ADJ%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Can LM1117MPX-ADJ/NOPB be used for 5V to 3.3V conversion?","answer":"Yes. With a 5 V input, the dropout margin is 5 V - 3.3 V = 1.7 V, which exceeds the 1.2 V maximum dropout at full load, so regulation is maintained across the full 800 mA range. Set the feedback resistors for 3.3 V output."},{"question":"What are the typical applications of LM1117MPX-ADJ/NOPB?","answer":"This LDO is used for post-regulated rails in power supplies, as a local supply for analog circuits, microcontrollers, and interface ICs, and in any application needing a clean adjustable voltage up to 800 mA from a 15 V input rail."},{"question":"What is the closest pin-compatible alternative to LM1117MPX-ADJ/NOPB?","answer":"The LM1117 series includes fixed-output siblings (e.g., 3.3 V, 5 V) in the same SOT-223 package and pinout. For an adjustable alternative, the LD1117 series from STMicroelectronics is a functional equivalent with similar dropout and current ratings, but confirm the pinout and compensation capacitor requirements against the specific datasheet before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM1117MPX-ADJ-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/LM1117MPX-ADJ-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}