{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP1801T-3302I/OT","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP1801T-3302I-OT","canonicalUrl":"https://icboms.com/microchip/MCP1801T-3302I-OT","factsUrl":"https://icboms.com/api/mcp/products/MCP1801T-3302I%2FOT","rawCanonicalId":null},"summary":{"shortDescription":"Microchip MCP1801T-3302I/OT, linear voltage regulator, fixed 3.3 V output, 150 mA, 50 µA quiescent current, 70 dB PSRR at 10 kHz, SOT-23-5 package, -40°C to 85°C.","salesMarkdown":"## 3.3 V fixed LDO for noise-sensitive rails The Microchip MCP1801T-3302I/OT is a single-output, fixed 3.3 V positive linear regulator rated for 150 mA continuous output. It targets applications where a clean analog or digital supply rail is needed from a 10 V max input — think sensor front-end supplies, MCU analog VDDA rails, or post-switcher clean-up for RF modules. The 70 dB PSRR at 10 kHz is the headline spec here: that is the frequency where many buck converters ring, so this LDO knocks down the ripple by a factor of 3000 while burning only 50 µA quiescent current. ## Dropout headroom and load budget Maximum dropout is 0.25 V at 100 mA load, meaning a 3.55 V input holds regulation with margin before the output falls out. At the full 150 mA rating the dropout rises — budget at least 350 mV headroom for the worst case across temperature. The 50 µA quiescent current is typical; at light loads (tens of µA) the LDO does not waste battery charge, making it usable in always-on sensor nodes or remote IoT endpoints that spend most of their time in sleep. ## Package, temperature, and protection Housed in a 5-pin SOT-23-5 (SC-74A), this is a surface-mount part for automated assembly. On-chip over-current protection is included; there is no thermal shutdown listed, so the board layout should not rely on the die to self-protect during a sustained short — keep the trace impedance low and the output capacitance reasonable. The Enable pin (active-high logic) lets a system microcontroller gate the rail off in standby, saving the 50 µA Iq. ## Sourcing and compliance status Microchip lists this part as Active, so there is no looming last-time-buy or obsolescence risk for production programs. ROHS3 compliant — no exemptions for lead in solder, which simplifies EU and global market compliance.","metaTitle":"Microchip MCP1801T-3302I/OT LDO Regulator","metaDescription":"MCP1801T-3302I/OT: 3.3V fixed-output LDO from Microchip, 150mA, 70dB PSRR at 10kHz, 50µA quiescent, industrial temp -40°C to 85°C, SOT-23-5.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"PSRR":"70dB (10kHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"150mA","Protection Features":"Over Current","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 85°C","Voltage - Input (Max)":"10V","Voltage Dropout (Max)":"0.25V @ 100mA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"50 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.56","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.56000","currency":"USD"},{"qty":25,"price":"$0.47720","currency":"USD"},{"qty":100,"price":"$0.43500","currency":"USD"},{"qty":3000,"price":"$0.43500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/99517263cdfd70e809fbef4f864b4b11.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the MCP1801T-3302I/OT at 10 kHz?","answer":"The listed PSRR is 70 dB at 10 kHz. This is the ripple rejection at the fundamental frequency of many switching regulators, making this LDO a good choice for cleaning up a post-buck rail for analog or RF loads."},{"question":"What package options are available for the MCP1801T-3302I/OT?","answer":"The device is supplied in a 5-pin SOT-23-5 (SC-74A) surface-mount package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP1801T-3302I-OT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP1801T-3302I-OT 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}}