{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP3871ES-2.5/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP3871ES-2.5-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP3871ES-2.5-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP3871ES-2.5%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP3871ES-2.5/NOPB LDO regulator, fixed 2.5 V output, 800 mA, 0.35 V dropout, DDPAK/TO-263-5, -40 to 125 °C, PSRR 73 dB ~ 57 dB (120 Hz).","salesMarkdown":"## Post-switcher noise rejection for sensitive analog rails The LP3871ES-2.5/NOPB is a fixed 2.5 V output LDO from Texas Instruments, delivering up to 800 mA with a maximum dropout voltage of 0.35 V at full load — the headroom between the input rail and 2.5 V must stay above 0.35 V across the load range to maintain regulation. Its PSRR spans 73 dB to 57 dB at 120 Hz, meaning it attenuates the 100/120 Hz ripple from a preceding switching regulator or rectifier by that margin — critical for powering analog front-ends, ADCs, or precision references where supply noise couples into the signal path. ## Package, temperature grade, and control features Housed in a DDPAK/TO-263-5 surface-mount package (5 leads plus exposed tab), the LP3871ES-2.5/NOPB requires a thermal pad on the PCB to sink heat from the die — the tab is the primary thermal path, so the board copper area under it sets the effective RθJA. An Enable pin allows the output to be shut down, and integrated protection covers over-current, over-temperature, and short-circuit events.","metaTitle":"LP3871ES-2.5/NOPB LDO 2.5V 800mA DDPAK, PSRR 73dB","metaDescription":"Texas Instruments LP3871ES-2.5/NOPB LDO regulator, fixed 2.5V output, 800mA, 0.35V dropout, PSRR 73dB at 120Hz, DDPAK-5, -40 to 125°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"73dB ~ 57dB (120Hz)","Package":"Tube","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-6, D²Pak (5 Leads + Tab), TO-263BA","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"800mA","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"7V","Voltage Dropout (Max)":"0.35V @ 800mA","Current - Supply (Max)":"15 mA","Supplier Device Package":"DDPAK/TO-263-5","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.53","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.53000","currency":"USD"},{"qty":10,"price":"$3.16600","currency":"USD"},{"qty":25,"price":"$2.99320","currency":"USD"},{"qty":100,"price":"$2.59410","currency":"USD"},{"qty":250,"price":"$2.46104","currency":"USD"},{"qty":500,"price":"$2.20830","currency":"USD"},{"qty":1000,"price":"$1.88250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e64158b04137996c9d24bacc34cacb6b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of LP3871ES-2.5/NOPB?","answer":"PSRR is 73 dB to 57 dB at 120 Hz — this is the ripple rejection from a 100/120 Hz input, typical of a full-wave rectifier or switching regulator output. The higher figure is at light load; it drops as load current increases."},{"question":"What package does LP3871ES-2.5/NOPB come in?","answer":"It ships in a DDPAK/TO-263-5 surface-mount package (5 leads plus exposed thermal tab). The supplier device package is DDPAK/TO-263-5. The standard delivery form is Tube."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP3871ES-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/LP3871ES-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}}