{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS92550TZ/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS92550TZ-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/TPS92550TZ-NOPB","factsUrl":"https://icboms.com/api/mcp/products/TPS92550TZ%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS92550TZ/NOPB, DC DC Regulator LED Driver, Step-Down (Buck), 1 Output, 450mA, 400kHz, PWM Dimming, 4.5V-36V Input, TO-PMOD-7, -40°C to 125°C.","salesMarkdown":"## What this LED driver is and where it fits The Texas Instruments TPS92550TZ/NOPB is a constant-current step-down (buck) LED driver in a TO-PMOD-7 power module package. It integrates the switching FET, so the external BOM stays tight — just the inductor, input/output caps, and a few passives. The 400 kHz switching frequency is a practical middle ground: fast enough to keep the inductor small, slow enough that layout parasitics don't bite you on a two-layer board. Rated for 4.5 V to 36 V input and delivering up to 450 mA per channel, this is the kind of part you reach for when you need a single-string LED driver for architectural lighting, signage, or general-purpose constant-current illumination. The -40°C to 125°C junction temperature range covers outdoor fixtures and engine-bay lighting where the ambient heat soaks through the housing. ## PWM dimming and what it means for the BOM Dimming is handled by a PWM input, which means the LED current is chopped at the dimming frequency rather than linearly reduced. That keeps the color temperature stable across the dimming range — important for architectural and display lighting where the human eye catches a color shift. The PWM pin is logic-level compatible, so a microcontroller GPIO or a dedicated PWM controller can drive it directly. ## Package and thermal reality The TO-PMOD-7 is a surface-mount power module with an exposed pad. That pad is the main thermal path — the datasheet layout recommendation shows a via array under the pad to pull heat into the board's internal copper planes. Without that via stitch, the junction temperature climbs fast above 300 mA continuous in a 70°C ambient. The module integrates the inductor and switch, so the hot spots are contained, but the board still acts as the heatsink. ## Lifecycle and sourcing It is ROHS3 compliant.","metaTitle":"TPS92550TZ/NOPB LED Driver, Buck Regulator, 450mA, TO-PMOD-7","metaDescription":"Texas Instruments TPS92550TZ/NOPB DC DC regulator LED driver, step-down (buck) topology, 450mA output, PWM dimming, 4.5-36V input, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"DC DC Regulator","Dimming":"PWM","Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Step-Down (Buck)","Frequency":"400kHz","Applications":"Lighting","Mounting Type":"Surface Mount","Package / Case":"TO-PMOD-7, Power Module","lifecycle_stage":"eol_hot","Number of Outputs":"1","Internal Switch(s)":"Yes","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Supply (Max)":"36V","Voltage - Supply (Min)":"4.5V","Supplier Device Package":"TO-PMOD-7","Current - Output / Channel":"450mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.08000","currency":"USD"},{"qty":10,"price":"$8.20400","currency":"USD"},{"qty":25,"price":"$7.82280","currency":"USD"},{"qty":100,"price":"$6.79250","currency":"USD"},{"qty":250,"price":"$6.48720","currency":"USD"},{"qty":500,"price":"$5.91480","currency":"USD"},{"qty":1250,"price":"$5.40000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5f647d7c06fdbb9404e5624ffba255ef.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS92550TZ-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS92550TZ-NOPB 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}}