{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM25085AMY/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM25085AMY-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM25085AMY-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM25085AMY%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM25085AMY/NOPB, Buck Controller, Step-Down Topology, 4.5V to 42V Supply, Up to 1MHz Switching, Single Output, Transistor Driver, 8-HVSSOP Package, -40°C to 125°C.","salesMarkdown":"## What this buck controller does and where it fits The Texas Instruments LM25085AMY/NOPB is a constant on-time (COT) step-down buck controller designed for input rails from 4.5V to 42V. It drives an external N-channel MOSFET and delivers a regulated output with up to 1MHz switching frequency, letting you shrink the inductor and output capacitor. The single-output, positive-configuration controller includes current limit and frequency control features, and it operates over the full -40°C to 125°C junction temperature range, making it a fit for industrial power supplies, automotive infotainment and body electronics, and 12V/24V distributed bus converters. ## Package and footprint — 8-HVSSOP with exposed pad The LM25085AMY/NOPB is offered in an 8-lead HVSSOP package (3.00mm width, PowerTSSOP variant) with an exposed thermal pad. The pad must be soldered to a copper plane on the PCB for adequate heat dissipation, especially at high input voltage or switching frequency. The part is also available in the 8-MSOP footprint (same body size, no pad) — verify which ordering code matches your assembly. The /NOPB suffix confirms lead-free (ROHS3 compliant) finish, no additional exemption paperwork needed. ## Switching frequency and control loop Switching frequency is adjustable up to 1MHz via a resistor on the RT pin. The constant on-time architecture gives fast transient response without a dedicated compensation network, but the frequency varies with input and output voltage — plan for that in the EMI filter design. The 100% duty cycle capability means the controller can pass the input straight through when the input drops near the output target, useful for automotive cold-crank scenarios. ## Lifecycle and compliance ROHS3 compliance is confirmed, covering EU and most global markets. No AEC-Q100 qualification is listed for this suffix — if automotive-grade is required, check the LM25085-Q1 variant.","metaTitle":"LM25085AMY/NOPB Buck Controller, 4.5V-42V, up to 1MHz","metaDescription":"TI LM25085AMY/NOPB step-down buck controller, 4.5V-42V input, up to 1MHz switching, -40°C to 125°C, 8-HVSSOP. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"8-PowerTSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Frequency Control","Duty Cycle (Max)":"100%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"Up to 1MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"No","Supplier Device Package":"8-HVSSOP","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 42V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.72","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.72000","currency":"USD"},{"qty":10,"price":"$2.44700","currency":"USD"},{"qty":25,"price":"$2.30800","currency":"USD"},{"qty":100,"price":"$1.96650","currency":"USD"},{"qty":250,"price":"$1.84652","currency":"USD"},{"qty":500,"price":"$1.61570","currency":"USD"},{"qty":1000,"price":"$1.33873","currency":"USD"},{"qty":2000,"price":"$1.30650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ed6a633b735df6fd03b233db3633cd8a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does TI provide for LM25085AMY/NOPB?","answer":"The LM25085AMY/NOPB is ROHS3 compliant per the manufacturer's declaration. Standard TI documentation includes the datasheet, application notes, and a material declaration report. No separate UL or IEC certification is listed for this part number."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM25085AMY-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}