{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UPC29M33AT-E1-AY","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"UPC29M33AT-E1-AY","canonicalUrl":"https://icboms.com/renesas/UPC29M33AT-E1-AY","factsUrl":"https://icboms.com/api/mcp/products/UPC29M33AT-E1-AY","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics UPC29M33AT--AY, fixed-output positive LDO regulator, 3.3V, 500mA, TO-252-3 (DPak) surface-mount package, 64dB PSRR at 120Hz.","salesMarkdown":"## Fixed 3.3V LDO with 64dB ripple rejection The UPC29M33AT-E1-AY: The Renesas UPC29M33AT--AY is a single-output positive LDO regulator delivering a fixed 3.3V at up to 500mA from a TO-252 surface-mount package. The 64dB PSRR at 120Hz means this part attenuates full-wave-rectified ripple from a 50/60Hz mains supply by a factor of roughly 1600 — the output sees less than 1mV of ripple for every 1V of input ripple at that frequency, making it suitable for analog front-ends and sensor supplies where clean DC matters. Input range extends to 16V maximum, with a dropout voltage of 1V at the full 500mA load — the input rail must stay at least 1V above 3.3V across the load and temperature range to keep the output in regulation. ## Protection and thermal envelope Built-in over-current and over-temperature protection means the regulator handles a momentary short or thermal overload without external crowbar circuitry — the die shuts down and auto-recovers when the fault clears. Operating temperature spans -30°C to 85°C ambient, which covers most indoor and telecom-grade enclosures but not extended automotive or under-hood ranges. Quiescent current is 3mA typical, with a maximum supply current of 20mA — the 3mA Iq is the standing draw that always flows from input to ground, so in battery-powered designs the regulator's own consumption should be factored into the sleep-mode budget. Surface-mount assembly with standard reflow profiles for DPak packages; the tab solder joint is the primary thermal path, so the stencil aperture for the tab should be sized for full solder coverage without bridging to the adjacent pins.","metaTitle":"Renesas UPC29M33AT-E1-AY LDO Regulator, 3.3V 500mA","metaDescription":"Renesas UPC29M33AT-E1-AY fixed-output LDO, 3.3V at 500mA, 64dB PSRR at 120Hz. TO-252 surface-mount package. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"64dB (120Hz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Current - Output":"500mA","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-30°C ~ 85°C (TA)","Voltage - Input (Max)":"16V","Voltage Dropout (Max)":"1V @ 500mA","Current - Supply (Max)":"20 mA","Supplier Device Package":"TO-252 (MP-3Z)","Current - Quiescent (Iq)":"3 mA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.26","stockQuantity":0,"priceTiers":[{"qty":238,"price":"$1.26000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/16e72115c88ba267287f2b222ccf9a65.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of UPC29M33AT--AY?","answer":"64dB at 120Hz — this is the power-supply rejection ratio at the full-wave-rectified ripple frequency from a 50/60Hz mains input. At 64dB, the output ripple is roughly 0.06% of the input ripple at 120Hz, which is useful for powering sensitive analog circuits from a rectified supply."},{"question":"What package does UPC29M33AT--AY come in?","answer":"TO-252-3 (DPak) surface-mount package, also designated as MP-3Z by Renesas. It has two leads plus a tab (the third electrical node) and is supplied in bulk packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/UPC29M33AT-E1-AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/UPC29M33AT-E1-AY 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}}