{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP1792T-4102H/CB","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP1792T-4102H-CB","canonicalUrl":"https://icboms.com/microchip/MCP1792T-4102H-CB","factsUrl":"https://icboms.com/api/mcp/products/MCP1792T-4102H%2FCB","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology, Automotive AEC-Q100 series, MCP1792T-4102H/CB — fixed 4.1V positive LDO, 100 mA output, 55V input max, SOT-23A-3 package, -40 to 150°C operating range.","salesMarkdown":"## 4.1V fixed LDO for high-voltage automotive rails The MCP1792T-4102H/CB is a fixed 4.1V output LDO from Microchip's automotive-grade series, rated for 100 mA continuous output. What sets it apart is the 55 V maximum input voltage — it regulates cleanly from a 12 V or 24 V battery bus without needing a pre-regulator, and it survives load-dump events that would overstress a standard 6 V input LDO. The PSRR starts at 80 dB at 100 Hz and rolls to 55 dB at 100 kHz — that 25 dB drop across the audio band matters if you are powering a sensor or CAN transceiver from a noisy DC-DC rail. At 100 kHz the rejection is still 55 dB, which is enough to keep switching ripple off the output. ## Dropout and quiescent current at temperature Maximum dropout is 1.2 V at the full 100 mA load — so the input must stay above 5.3 V to hold regulation. The quiescent current is 45 µA typical, rising to 150 µA max including the enable pin draw. That Iq is low enough for always-on modules in a vehicle, but the 1.2 V dropout means you cannot run it from a 5 V rail with margin; it needs a 6 V or higher input. Protection features include over-current, over-temperature, short-circuit, and under-voltage lockout — the UVLO threshold is not specified in the brief, but the block shuts the pass element off below the minimum input. The enable pin lets a supervisor or ignition signal gate the output. ## Active production with AEC-Q100 traceability The AEC-Q100 qualification (grade 0 implied by the 150 °C rating) means the part has passed the full automotive stress suite — high-temperature operating life, temperature cycling, and HBM/CDM ESD. The SOT-23A-3 package is a standard three-lead footprint shared with many LDOs, so board layout is straightforward. ROHS3 compliant.","metaTitle":"MCP1792T-4102H/CB — 4.1V LDO, 55V Input, AEC-Q100, SOT-23A-3","metaDescription":"Microchip MCP1792T-4102H/CB: 4.1V fixed-output LDO, 100 mA, 55V max input, 80 dB PSRR at 100 Hz, AEC-Q100 qualified, -40 to 150°C. Active production.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"PSRR":"80dB ~ 55dB (100Hz ~ 100kHz)","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"100mA","Protection Features":"Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 150°C (TA)","Voltage - Input (Max)":"55V","Voltage Dropout (Max)":"1.2V @ 100mA","Current - Supply (Max)":"150 µA","Supplier Device Package":"SOT-23A-3","Current - Quiescent (Iq)":"45 µA","Voltage - Output (Min/Fixed)":"4.1V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.79","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.79000","currency":"USD"},{"qty":25,"price":"$0.67000","currency":"USD"},{"qty":100,"price":"$0.60000","currency":"USD"},{"qty":3000,"price":"$0.60000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/97bc805691226579d5bb80763be551a2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is MCP1792T-4102H/CB automotive qualified?","answer":"Yes — it is listed under the Automotive, AEC-Q100 series, which means it has passed the full AEC-Q100 qualification suite. The operating temperature range of -40°C to 150°C supports under-hood and engine-bay deployment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP1792T-4102H-CB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP1792T-4102H-CB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:05:36.148Z","lastPublished":"2026-07-17T20:05:36.148Z","indexable":true}}