{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP2980AIM5X-4.5/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP2980AIM5X-4.5-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP2980AIM5X-4.5-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP2980AIM5X-4.5%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP2980AIM5X-4.5/NOPB, fixed-output positive LDO, 50 mA, 4.5 V, 220 mV dropout, 63 dB PSRR (1 kHz), 95 µA quiescent, SOT-23-5, -40°C to 125°C.","salesMarkdown":"## 63 dB PSRR at 1 kHz — clean rail for analog front-ends The LP2980AIM5X-4.5/NOPB is a fixed 4.5 V output LDO from Texas Instruments, delivering 50 mA with a 63 dB power-supply rejection ratio at 1 kHz. That PSRR figure puts it in the class of regulators suited for powering precision analog blocks — op-amp rails, ADC reference buffers, or sensor bias lines — where ripple on the supply directly degrades signal-to-noise ratio. ## 220 mV dropout and 95 µA quiescent — low headroom, low idle Maximum dropout is 220 mV at the full 50 mA load, so the input can drop to 4.72 V before regulation is lost. That matters for battery-powered gear where the cell voltage sags under load, or for a post-switcher rail that needs a clean 4.5 V with only a few hundred millivolts of headroom. Quiescent current is 95 µA typical, keeping the idle draw low in always-on subsystems. The SOT-23-5 package (SC-74A) keeps the footprint small, but the thermal resistance means the 50 mA output is the practical limit at the high end of the temperature range without airflow. For BOM lines that still call out this exact order code, the only path is the independent surplus market.","metaTitle":"LP2980AIM5X-4.5/NOPB LDO Regulator, 4.5V Fixed, 50mA","metaDescription":"Texas Instruments LP2980AIM5X-4.5/NOPB is a 50mA fixed-output LDO with 63dB PSRR at 1kHz, 220mV max dropout, and -40°C to 125°C range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"63dB (1kHz)","Series":"-","Package":"Tape & Reel (TR)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"50mA","Base Product Number":"LP2980","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)":"0.22V @ 50mA","Current - Supply (Max)":"1.2 mA","Voltage - Output (Max)":"-","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"95 µA","Voltage - Output (Min/Fixed)":"4.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/865be670b7e185d590e6565808fed4d6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LP2980AIM5X-4.5%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LP2980AIM5X-4.5/NOPB?","answer":"Texas Instruments has not published an official replacement for the LP2980AIM5X-4.5/NOPB. A pin-compatible substitute would need to match the SOT-23-5 footprint, 4.5 V fixed output, 50 mA rating, and 63 dB PSRR at 1 kHz. Without a direct cross-reference from TI, a design review is needed to qualify an alternate."},{"question":"Can LP2980AIM5X-4.5/NOPB be used in new designs?","answer":"No, because the part is obsolete and has no official successor. New designs should select an active-production LDO with the same output voltage, current rating, and package footprint."},{"question":"What is the PSRR of LP2980AIM5X-4.5/NOPB?","answer":"The power-supply rejection ratio is 63 dB at 1 kHz. That level of PSRR makes this LDO suitable for powering noise-sensitive analog circuits such as op-amp rails and ADC reference buffers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP2980AIM5X-4.5-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/LP2980AIM5X-4.5-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}