{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3674MF-1.5","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3674MF-1.5","canonicalUrl":"https://icboms.com/texas-instruments/LM3674MF-1.5","factsUrl":"https://icboms.com/api/mcp/products/LM3674MF-1.5","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3674MF-1.5, Step-Down Buck Regulator, Fixed 1.5 V Output, 600 mA, 2 MHz Switching, SC-74A/SOT-753, Surface Mount, -30°C to 85°C.","salesMarkdown":"## What this part does — and why the 2 MHz switching matters The Texas Instruments LM3674MF-1.5 is a fixed-output step-down (buck) switching regulator delivering a regulated 1.5 V rail from an input voltage between 2.7 V and 5.5 V. It is designed for battery-powered or low-voltage portable equipment where board space is tight and efficiency matters — the 2 MHz switching frequency lets you use small ceramic capacitors and a compact inductor, shrinking the overall power supply footprint. The synchronous rectifier (internal low-side FET) improves efficiency at light loads, which is typical for always-on or standby circuits in handheld devices, IoT nodes, and portable instruments. The part is rated for -30°C to 85°C ambient, so it fits indoor commercial and industrial environments but not automotive under-hood or extended-temperature outdoor gear. ## Fixed 1.5 V output — no external divider needed The output is fixed at 1.5 V. That means no external feedback resistor divider is required — just the inductor, input/output caps, and the chip. ## 600 mA output — sizing the load budget The LM3674MF-1.5 is rated for 600 mA continuous output current. That is enough for a small microcontroller plus a few peripherals, a wireless module (Bluetooth Low Energy, Zigbee), or a sensor node. It is not sized for a motor driver or a high-current RF power amplifier. When you lay out the board, keep the input and output capacitors close to the IC — the 2 MHz switching edges are fast, and loop inductance hurts both efficiency and output ripple. ## Package and mounting — SOT-23-5 The part comes in a 5-pin SOT-23 package. It is a surface-mount part. ## Lifecycle and sourcing — active, no LTB risk The LM3674MF-1.5 is listed as Active in production. There is no last-time-buy notice or obsolescence risk on this part today. It is not AEC-Q100 qualified, so it is not intended for automotive-grade designs. The part is RoHS non-compliant (per the ledger), which may matter for EU RoHS or similar regulatory requirements — verify your exemption or consider the RoHS-compliant suffix variant if needed. For current availability and pricing, the part is sourced and quoted to order through independent distribution; submit an RFQ for real-time stock and price confirmation.","metaTitle":"LM3674MF-1.5 Step-Down Regulator, 600 mA, 2 MHz, SOT-23-5","metaDescription":"LM3674MF-1.5 fixed 1.5 V output buck regulator, 600 mA, 2 MHz switching, SOT-23-5. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Bulk","Function":"Step-Down","Topology":"Buck","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Current - Output":"600mA","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"2MHz","Operating Temperature":"-30°C ~ 85°C (TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"5.5V","Voltage - Input (Min)":"2.7V","Supplier Device Package":"SOT-23-5","Voltage - Output (Min/Fixed)":"1.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.51","stockQuantity":0,"priceTiers":[{"qty":700,"price":"$0.51000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1d3607769b220a1628a80284e98e141c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3674MF-1.5 compatible with 5 V input?","answer":"Yes, the input voltage range is 2.7 V to 5.5 V, so a 5 V supply rail is within spec."},{"question":"What is the replacement for LM3674MF-1.5 if it goes obsolete?","answer":"There is no official replacement listed for the LM3674MF-1.5 at this time. If you need a functionally similar part for new designs, consider the LM53625LQURNLRQ1 (automotive-grade, 2.5 A, 2.1 MHz) or the LMR33630APCQRNXRQ1 (adjustable output, 3 A, 2.1 MHz) — but verify pin compatibility and output voltage options in the respective datasheets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3674MF-1.5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3674MF-1.5 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}}