{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UA7810CKTTR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UA7810CKTTR","canonicalUrl":"https://icboms.com/texas-instruments/UA7810CKTTR","factsUrl":"https://icboms.com/api/mcp/products/UA7810CKTTR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UA7810CKTTR, fixed-output positive LDO regulator, 10 V, 1.5 A, TO-263-4 (D²Pak), surface mount, 78 dB PSRR (120 Hz), over-current / over-temperature / reverse polarity / short-circuit protection.","salesMarkdown":"## 10 V fixed output, 1.5 A continuous — the 78 dB PSRR matters here The UA7810CKTTR is a fixed 10 V positive LDO regulator from Texas Instruments, rated for 1.5 A continuous output. It belongs to the classic 78xx family but in a surface-mount D²Pak (TO-263) package — the same die as the through-hole version, just re-packaged for automated assembly. The 78 dB PSRR at 120 Hz means this part rejects full-wave-rectified ripple (100/120 Hz) by a factor of roughly 8000:1 — critical when the input comes from a bulk capacitor after a bridge rectifier. If your rail has 1 Vpp ripple at 120 Hz, the output sees about 125 µVpp of that ripple. That's the difference between a clean analog supply and one that injects hum into a preamp or ADC reference. Protection features include over-current, over-temperature, reverse polarity, and short-circuit — the output folds back under fault, and the die thermal-shutdown kicks in before the plastic package reaches its glass-transition temperature. Reverse polarity protection means a swapped input rail won't instantly kill the regulator (though the downstream load may still suffer). ## Dropout headroom and thermal design — the 2 V at 1 A rule Maximum dropout voltage is 2 V at 1 A load. At lighter loads the dropout drops, but design the minimum input voltage around this worst-case figure — otherwise the output sags below 10 V under transient load. The DDPAK/TO-263-3 package has an exposed metal tab on the bottom (the D²Pak paddle). That tab is the output (Vout) and also the main thermal path. Solder it to a copper plane on the PCB — the datasheet recommends at least 1 square inch of 2-oz copper for 1.5 A at 25°C ambient. Without that plane, the junction-to-ambient thermal resistance climbs above 60°C/W, and the die hits thermal shutdown at much lower current. Operating temperature range is 0°C to 125°C junction — this is a commercial-grade part. Not rated for -40°C cold start, so if the board sees freezing temperatures at power-up, look at the industrial-grade UA78xx variants instead.","metaTitle":"Texas Instruments UA7810CKTTR 10V 1.5A LDO, TO-263","metaDescription":"Texas Instruments UA7810CKTTR: fixed 10V output, 1.5A LDO regulator. 78dB PSRR at 120Hz, over-current/thermal/short-circuit protection. Active, RoHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"78dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-4, D²Pak (3 Leads + Tab), TO-263AA","lifecycle_stage":"eol_hot","Current - Output":"1.5A","Protection Features":"Over Current, Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"28V","Voltage Dropout (Max)":"2V @ 1A","Supplier Device Package":"DDPAK/TO-263-3","Voltage - Output (Min/Fixed)":"10V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.99","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.99000","currency":"USD"},{"qty":10,"price":"$0.88100","currency":"USD"},{"qty":25,"price":"$0.83640","currency":"USD"},{"qty":100,"price":"$0.68700","currency":"USD"},{"qty":250,"price":"$0.64216","currency":"USD"},{"qty":500,"price":"$0.56748","currency":"USD"},{"qty":1000,"price":"$0.44801","currency":"USD"},{"qty":2500,"price":"$0.42266","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/04ebd451bf557fc6e14e96ace28218bc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Texas Instruments provide for UA7810CKTTR?","answer":"The part is RoHS3 compliant (lead-free, no exemptions). TI provides the standard RoHS certificate of compliance and material declaration. No UL or IEC certification is listed in the manufacturer's product record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UA7810CKTTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UA7810CKTTR 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}}