{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP5951MFX-1.3/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP5951MFX-1.3-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP5951MFX-1.3-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP5951MFX-1.3%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP5951MFX-1.3/NOPB LDO voltage regulator, 150 mA, 1.3 V fixed output, positive, 55 µA quiescent, SC-74A / SOT-753, surface mount.","salesMarkdown":"## 150 mA LDO with 60 dB PSRR — noise-sensitive rail fit The LP5951MFX-1.3/NOPB is a 150 mA fixed-output LDO from Texas Instruments, delivering a regulated 1.3 V rail from an input up to 5.5 V. Its PSRR of 60 dB at 100 Hz dropping to 50 dB at 10 kHz means it attenuates ripple from a switching pre-regulator or a noisy digital supply by a factor of 1000 at the lower frequencies — relevant when powering analog front-ends, RF transceivers, or sensor bias where supply noise couples into the signal chain. The 55 µA quiescent current keeps the bias draw low enough for battery-powered always-on domains, and the enable pin lets a system controller shut down the output to near-zero draw when the rail is unused. ## Temperature grade and protection — industrial and automotive deployment The SOT-23-5 package (SC-74A) keeps the PCB footprint under 3 mm × 3 mm, fitting into space-constrained designs like handheld instruments or compact IoT nodes. On-chip protection includes over-current limiting, thermal shutdown, and short-circuit current foldback — the regulator survives a sustained output short without damage, and the thermal limit cycles the output until the fault clears. No external protection diode is needed for normal operation. ## Sourcing and lifecycle — active production, no EOL concern ROHS3 compliant, with no halogen or lead restrictions blocking EU or global shipments. The reel quantity is the standard 3000 pieces per 7-inch reel.","metaTitle":"LP5951MFX-1.3/NOPB LDO Regulator, 150mA, 1.3V Fixed","metaDescription":"Texas Instruments LP5951MFX-1.3/NOPB LDO, 150mA output, 1.3V fixed, 55µA Iq, 60dB PSRR, -40°C to 125°C, SOT-23-5. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"60dB ~ 50dB (100Hz ~ 10kHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"150mA","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"5.5V","Voltage Dropout (Max)":"0.35V @ 150mA","Current - Supply (Max)":"70 µA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"55 µA","Voltage - Output (Min/Fixed)":"1.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.96","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.96000","currency":"USD"},{"qty":10,"price":"$0.84700","currency":"USD"},{"qty":25,"price":"$0.79520","currency":"USD"},{"qty":100,"price":"$0.64900","currency":"USD"},{"qty":250,"price":"$0.60284","currency":"USD"},{"qty":500,"price":"$0.51304","currency":"USD"},{"qty":1000,"price":"$0.41043","currency":"USD"},{"qty":3000,"price":"$0.37195","currency":"USD"},{"qty":6000,"price":"$0.36300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/86725ce707fc227949934429198b431a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of LP5951MFX-1.3/NOPB?","answer":"PSRR is 60 dB at 100 Hz and 50 dB at 10 kHz, providing strong rejection of low-frequency ripple from switching converters or digital noise on the input rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP5951MFX-1.3-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/LP5951MFX-1.3-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}}