{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP38690DTX-5.0/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP38690DTX-5.0-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP38690DTX-5.0-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP38690DTX-5.0%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP38690DTX-5.0/NOPB LDO voltage regulator, fixed 5V output, 1A, TO-252-3 (DPak), surface mount, 55dB PSRR at 120Hz, -40°C to 125°C.","salesMarkdown":"## What this fixed 5V LDO does on the board The LP38690DTX-5.0/NOPB: With a maximum dropout voltage of 0.8V at full load, the input rail needs to stay above about 5.8V to keep the output in regulation; a 6V or 9V supply is the typical upstream rail for this part. ## Why the quiescent current and PSRR matter for your rail Quiescent current is 55 µA typical, rising to a maximum of 100 µA — low enough that the regulator's own draw won't dominate the power budget in always-on or battery-backed circuits. The 55 dB PSRR at 120 Hz means the output rejects most of the 100/120 Hz ripple from a rectified AC or switching supply — useful for powering analog front-ends or sensor rails where line-frequency noise would couple into the signal chain. ## Temperature range and protection for real-world deployment Built-in over-temperature protection shuts the output down before the die exceeds its safe junction limit — a common failure signature on boards where a downstream short or high ambient cooks the regulator.","metaTitle":"LP38690DTX-5.0/NOPB LDO Regulator, 5V Fixed, 1A, TO-252-3","metaDescription":"Texas Instruments LP38690DTX-5.0/NOPB: 1A LDO, 5V fixed output, 55dB PSRR at 120Hz, TO-252-3. Active, ROHS3 compliant. 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":"55dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Current - Output":"1A","Protection Features":"Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"10V","Voltage Dropout (Max)":"0.8V @ 1A","Current - Supply (Max)":"100 µA","Supplier Device Package":"TO-252-3","Current - Quiescent (Iq)":"55 µA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.03","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.03000","currency":"USD"},{"qty":10,"price":"$1.82300","currency":"USD"},{"qty":25,"price":"$1.72000","currency":"USD"},{"qty":100,"price":"$1.46530","currency":"USD"},{"qty":250,"price":"$1.37588","currency":"USD"},{"qty":500,"price":"$1.20390","currency":"USD"},{"qty":1000,"price":"$0.99751","currency":"USD"},{"qty":2500,"price":"$0.97350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/537d21f8094b1e4b51fad6158702f7c8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the LP38690DTX-5.0/NOPB and how do I get a price?","answer":"Submit a request with your target quantity and preferred lead time."},{"question":"What is the PSRR of the LP38690DTX-5.0/NOPB?","answer":"The power-supply rejection ratio is 55 dB at 120 Hz, which effectively attenuates line-frequency ripple from rectified AC or switching supplies before it reaches the load."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP38690DTX-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/LP38690DTX-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}}