{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP38693MP-5.0/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP38693MP-5.0-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP38693MP-5.0-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP38693MP-5.0%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP38693MP-5.0/NOPB linear regulator, fixed 5V output, 500mA, SOT-223-5, 55dB PSRR at 120Hz, active ROHS3.","salesMarkdown":"## 55 dB PSRR at line frequency — what it means for the rail The LP38693MP-5.0/NOPB delivers 55 dB of power-supply rejection at 120 Hz. That is the ripple-rejection figure a designer cares about when the LDO follows a full-wave rectifier or a switching pre-regulator — 55 dB attenuates a 100 mVpp input ripple to roughly 180 µVpp on the output, which keeps the 5 V rail clean for analog front-ends, ADCs, or low-noise sensor supplies. ## Dropout and output current — the headroom budget Rated for 500 mA continuous output with a maximum dropout voltage of 0.45 V at that full load. The input rail must stay at least 450 mV above 5 V across the load and temperature range to keep regulation — a 5.5 V supply is marginal; 6 V or higher gives the headroom the datasheet assumes. Quiescent current is 55 µA typical, and the maximum supply current drawn by the regulator itself is 100 µA. For always-on peripherals drawing a few milliamps, the LDO's own consumption does not dominate the system power budget. ## Temperature grade and package — where this part fits The -40°C to 125°C operating range covers industrial enclosures, engine-bay electronics, and outdoor telecom equipment. Product status is Active, so there is no last-time-buy pressure or end-of-life clock for new designs.","metaTitle":"LP38693MP-5.0/NOPB 500mA LDO, 5V Fixed, SOT-223-5","metaDescription":"Texas Instruments LP38693MP-5.0/NOPB 500mA LDO, 5V fixed output, 55dB PSRR at 120Hz, 0.45V dropout. Active, ROHS3. Order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"55dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-261-5, TO-261AB","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"500mA","Protection Features":"Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"10V","Voltage Dropout (Max)":"0.45V @ 500mA","Current - Supply (Max)":"100 µA","Supplier Device Package":"SOT-223-5","Current - Quiescent (Iq)":"55 µA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.82","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.82000","currency":"USD"},{"qty":10,"price":"$1.63400","currency":"USD"},{"qty":25,"price":"$1.54160","currency":"USD"},{"qty":100,"price":"$1.31340","currency":"USD"},{"qty":250,"price":"$1.23324","currency":"USD"},{"qty":500,"price":"$1.07908","currency":"USD"},{"qty":1000,"price":"$0.89409","currency":"USD"},{"qty":2000,"price":"$0.87257","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/646e217adc5eed5fb5e0b93776e1ee3e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is LP38693MP-5.0/NOPB's listed PSRR?","answer":"55 dB at 120 Hz. This is the line-frequency ripple rejection figure — it tells you how well the LDO cleans up 100/120 Hz ripple from a rectified AC or switching pre-regulator input."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP38693MP-5.0-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/LP38693MP-5.0-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}}