{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP2989IMX-2.5/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP2989IMX-2.5-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP2989IMX-2.5-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP2989IMX-2.5%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP2989 series LDO voltage regulator, LP2989IMX-2.5/NOPB, fixed 2.5V output, 500mA, 8-SOIC (0.154\", 3.90mm Width), surface mount, bulk.","salesMarkdown":"## Noise-sensitive rail regulator with 60 dB PSRR The LP2989IMX-2.5/NOPB is a fixed 2.5V output LDO from Texas Instruments, rated for 500 mA continuous output current. Its 60 dB PSRR at 1 kHz means it rejects switching noise from upstream DC-DC converters well enough to feed sensitive analog rails — ADC references, op-amp supplies, or RF front-ends — without an additional post-filter stage. ## Dropout and quiescent: the real BOM-fit numbers Maximum dropout is 0.65 V at the full 500 mA load. If the input rail is 3.3 V, the headroom is 0.8 V — enough margin across temperature and line variation. Quiescent current is 175 µA typical, which matters for always-on peripherals where the regulator's own draw competes with the load's sleep current. Operating temperature spans -40°C to 125°C, so this part handles both cold-start and under-hood ambient without a grade change. Built-in protection covers overcurrent, overtemperature, and short-circuit events — the regulator folds back rather than latching off or failing open.","metaTitle":"LP2989IMX-2.5/NOPB LDO Regulator, 2.5V Fixed, 500mA, 8-SOIC","metaDescription":"Texas Instruments LP2989IMX-2.5/NOPB LDO, 2.5V fixed output, 500mA, 60dB PSRR at 1kHz, -40 to 125°C, 8-SOIC. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"60dB (1kHz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"500mA","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"16V","Voltage Dropout (Max)":"0.65V @ 500mA","Current - Supply (Max)":"9 mA","Supplier Device Package":"8-SOIC","Current - Quiescent (Iq)":"175 µA","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6","stockQuantity":0,"priceTiers":[{"qty":188,"price":"$1.60000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LP2989IMX-2.5/NOPB and how is it quoted?","answer":"No stock-holding claim is made; availability is verified per inquiry."},{"question":"What is the PSRR of LP2989IMX-2.5/NOPB and why does it matter?","answer":"PSRR is 60 dB at 1 kHz. This means the regulator attenuates 1 kHz ripple on the input by a factor of 1000 — a 100 mVpp ripple becomes 0.1 mVpp at the output. For analog circuits like ADC reference supplies or audio rails, this keeps switching noise from coupling into the signal path."},{"question":"What protection features does LP2989IMX-2.5/NOPB include?","answer":"The regulator integrates overcurrent, overtemperature, and short-circuit protection. These are built-in, not external — the device folds back current or shuts down thermally rather than latching off or failing catastrophically."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP2989IMX-2.5-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/LP2989IMX-2.5-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}