{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP3981IMM-3.03/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP3981IMM-3.03-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP3981IMM-3.03-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP3981IMM-3.03%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP3981IMM-3.03/NOPB, single-output positive LDO, fixed 3.03V output, 300mA, 0.2V dropout max at full load, 120µA quiescent, PSRR 50-55dB, 8-VSSOP package, -40°C to 125°C.","salesMarkdown":"## Fixed 3.03V rail for noise-sensitive loads PSRR measures 50 dB to 55 dB across the 1 kHz to 10 kHz band, which covers the switching frequency of many DC-DC converters and the audio range. That level of ripple rejection is adequate for powering analog front-ends, codec supplies, or sensor bias rails where a switcher's ripple would otherwise couple into the signal path. The operating temperature range of -40°C to 125°C covers automotive under-hood, industrial motor drives, and outdoor telecom enclosures. Protection features include over-current, over-temperature, and short-circuit shutdown — standard for a modern LDO but worth noting for designs that cannot tolerate a latched fault. The enable pin (active high) allows external sequencing or shutdown control without a separate load switch. ## Package and rework considerations Available in Tape & Reel or Cut Tape options from distribution. The ROHS3 compliance means no exemption-listed halogens or phthalates — clean for RoHS-driven BOMs. ## Lifecycle and sourcing The NOPB suffix confirms lead-free / RoHS3 compliance, which is the standard for new designs. For BOM planning, this is a straightforward active part to qualify.","metaTitle":"LP3981IMM-3.03/NOPB LDO Regulator, 3.03V Fixed Output, 300mA","metaDescription":"Texas Instruments LP3981IMM-3.03/NOPB is a 3.03V fixed-output LDO rated for 300mA with 0.2V dropout at full load. Active, ROHS3, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"50dB ~ 55dB (1kHz ~ 10kHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"300mA","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"6V","Voltage Dropout (Max)":"0.2V @ 300mA","Current - Supply (Max)":"210 µA","Supplier Device Package":"8-VSSOP","Current - Quiescent (Iq)":"120 µA","Voltage - Output (Min/Fixed)":"3.03V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.85","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.85000","currency":"USD"},{"qty":10,"price":"$0.74500","currency":"USD"},{"qty":25,"price":"$0.70000","currency":"USD"},{"qty":100,"price":"$0.57120","currency":"USD"},{"qty":250,"price":"$0.53060","currency":"USD"},{"qty":500,"price":"$0.45156","currency":"USD"},{"qty":1000,"price":"$0.36125","currency":"USD"},{"qty":2000,"price":"$0.32738","currency":"USD"},{"qty":5000,"price":"$0.31950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1c6d57dcd07d7153ec1284236bf58793.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is a direct equivalent or replacement for LP3981IMM-3.03/NOPB?","answer":"No official pin-compatible second source is listed in the cross-reference data. The LP3981 family includes other fixed-voltage variants (e.g., 2.5V, 2.8V, 3.0V, 3.3V) in the same package, but only the 3.03V version delivers that exact output. For a different output voltage, consider the appropriate LP3981 fixed-voltage variant."},{"question":"What is the PSRR of LP3981IMM-3.03/NOPB?","answer":"PSRR is specified at 50 dB to 55 dB across the 1 kHz to 10 kHz frequency range. This is moderate performance — adequate for cleaning up switcher ripple in analog and mixed-signal rails, but not as high as ultra-low-noise LDOs that reach 70-80 dB at those frequencies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP3981IMM-3.03-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/LP3981IMM-3.03-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}