{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM1117IMP-ADJ/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM1117IMP-ADJ-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM1117IMP-ADJ-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM1117IMP-ADJ%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM1117IMP-ADJ/NOPB, adjustable positive LDO regulator, 800 mA output, 1.2 V max dropout, 75 dB PSRR at 120 Hz, -40°C to 125°C, SOT-223-4 package.","salesMarkdown":"## Dropout headroom at 800 mA The LM1117IMP-ADJ/NOPB is a single-output adjustable LDO from TI's LM1117 family, rated for 800 mA continuous output. The maximum dropout voltage is 1.2 V at that full load — meaning the input must stay at least 1.2 V above the programmed output to maintain regulation. For a 3.3 V output rail, the input needs at least 4.5 V, which is comfortable off a 5 V bus but tight from a 3.6 V lithium cell. ## Ripple rejection and output range PSRR is 75 dB at 120 Hz, which knocks down mains ripple by a factor of about 5600 — useful when this LDO follows a full-wave rectifier or a noisy switching pre-regulator. The adjustable output spans from a 1.25 V reference up to 13.8 V, limited by the 15 V maximum input. Quiescent current runs 5 mA typical, with a 10 mA supply-current ceiling. ## Industrial temperature grade and protection On-chip protection includes over-current limiting and thermal shutdown — no external watchdog needed for basic fault survival.","metaTitle":"LM1117IMP-ADJ/NOPB Adjustable LDO, 800mA, SOT-223-4, Active","metaDescription":"Texas Instruments LM1117IMP-ADJ/NOPB adjustable LDO regulator, 800mA output, 1.2V max dropout, 75dB PSRR at 120Hz, -40°C to 125°C, SOT-223-4.","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":"-40°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-223-4","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7000","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM1117IMP-ADJ%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Does LM1117IMP-ADJ/NOPB require external capacitors?","answer":"Like all LDO regulators, it needs input and output capacitors for stability — the datasheet specifies minimum capacitance values and ESR ranges. The exact recommendation depends on the output voltage and load transient requirements."},{"question":"Can LM1117IMP-ADJ/NOPB replace LM1117T-ADJ?","answer":"Both are adjustable LDOs from the same LM1117 family with the same 800 mA rating and dropout spec. The key difference is the package: LM1117IMP-ADJ/NOPB is in SOT-223-4 (surface-mount), while LM1117T-ADJ is in TO-220 (through-hole). They are not pin-compatible — the board layout must match the package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM1117IMP-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/LM1117IMP-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}}