{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3670MF-1.8","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3670MF-1.8","canonicalUrl":"https://icboms.com/texas-instruments/LM3670MF-1.8","factsUrl":"https://icboms.com/api/mcp/products/LM3670MF-1.8","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3670MF-1.8, step-down buck regulator, fixed 1.8 V output, 350 mA, 1 MHz switching, synchronous rectifier, SOT-23-5, -40°C to 85°C.","salesMarkdown":"## Fixed 1.8 V output, 350 mA — a compact rail for 1.8 V loads It integrates a synchronous rectifier for efficiency and switches at 1 MHz, allowing small external inductor and capacitor values. The SOT-23-5 package keeps the footprint tight, suitable for space-constrained boards in industrial control, portable instrumentation, and telecom modules where a stable 1.8 V rail is needed. ## 350 mA at 1 MHz — sizing the output stage With a 350 mA current rating, this part fits low-to-moderate power loads such as MCU I/O banks, sensor supplies, or wireless module rails. The 1 MHz switching frequency keeps the inductor in the 2.2 µH to 4.7 µH range and the output capacitor at 10 µF or less, saving board area. The synchronous rectifier eliminates the external Schottky diode, reducing BOM count and improving efficiency at light loads. It is RoHS non-compliant per the listing, so designs requiring RoHS exemption or lead-free assembly should verify the solder alloy compatibility.","metaTitle":"Texas Instruments LM3670MF-1.8 Buck Regulator, 350 mA","metaDescription":"Texas Instruments LM3670MF-1.8 step-down buck regulator, fixed 1.8 V output, 350 mA, 1 MHz switching, SOT-23-5.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Logic ICs"],"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":"350mA","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"1MHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"5.5V","Voltage - Input (Min)":"2.5V","Supplier Device Package":"SOT-23-5","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.41","stockQuantity":0,"priceTiers":[{"qty":740,"price":"$0.41000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b732f9778d3c9df4ade4913325cf520a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can LM3670MF-1.8 replace LM3670MF-1.5?","answer":"The LM3670MF-1.8 and LM3670MF-1.5 are pin-compatible and share the same package (SOT-23-5) and electrical ratings except for the fixed output voltage — 1.8 V versus 1.5 V. If your load requires 1.8 V, this part is a drop-in replacement; if you need 1.5 V, you need the -1.5 variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3670MF-1.8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3670MF-1.8 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}}