{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1979ETM+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1979ETM","canonicalUrl":"https://icboms.com/analog-devices/MAX1979ETM","factsUrl":"https://icboms.com/api/mcp/products/MAX1979ETM%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX1979ETM+, TEC Controller IC, 3V ~ 5.5V Supply, -40°C ~ 85°C, 48-TQFN (7x7) Exposed Pad, Tube.","salesMarkdown":"## What the MAX1979ETM+ is and where it fits The MAX1979ETM+ from Analog Devices (formerly Maxim Integrated) is a controller IC purpose-built for driving a Thermoelectric Cooler (TEC). It integrates the control loop and output stage needed to maintain a precise temperature setpoint in laser diode modules, optical transceivers, and photonic assemblies where thermal stability directly affects wavelength and power. It is housed in a 48-TQFN (7x7 mm) package with an exposed pad for thermal management. The pad must be soldered to a PCB thermal land and connected to a ground plane to keep the junction temperature within limits when the TEC is drawing significant current. ## Supply voltage and temperature — what they mean for the BOM The -40°C to 85°C operating range is the standard industrial grade. If the end equipment lives in an unconditioned enclosure — rooftop telecom, outdoor surveillance, or engine-adjacent instrumentation — this part is rated for it. No derating is needed down to -40°C, but at the high end (85°C ambient) the package's thermal resistance becomes the limiting factor for continuous TEC current. ## Lifecycle and sourcing reality For a BOM line that needs a dedicated TEC controller, this part carries no imminent last-time-buy risk. The part is ROHS3 compliant, so it meets the European RoHS exemption rules for lead-free soldering. No conflict with current reflow profiles.","metaTitle":"MAX1979ETM+ Thermoelectric Cooler Controller, 3V-5.5V","metaDescription":"MAX1979ETM+ is an active TEC controller IC from Analog Devices. Operates on 3V to 5.5V supply, industrial temp range -40°C to 85°C, 48-TQFN package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Applications":"Thermoelectric Cooler","Mounting Type":"Surface Mount","Package / Case":"48-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"48-TQFN (7x7)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$31.97","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$31.97000","currency":"USD"},{"qty":10,"price":"$29.48400","currency":"USD"},{"qty":25,"price":"$28.15880","currency":"USD"},{"qty":100,"price":"$25.17730","currency":"USD"},{"qty":250,"price":"$24.01780","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7ff16cea33ee9d88e2e0100629b06cb3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What supply voltage does the MAX1979ETM+ need?","answer":"It operates from 3V to 5.5V, so it works on both 3.3V and 5V rails. The TEC drive voltage is drawn from this same supply, so the rail voltage directly sets the maximum cooling/heating power available."},{"question":"Can the MAX1979ETM+ be used with a 5V supply?","answer":"Yes, 5V is within the specified 3V to 5.5V range. Operating at 5V gives the output stage more headroom, which is beneficial for driving higher-current TECs."},{"question":"What is the MAX1979ETM+ used for?","answer":"It is a controller for Thermoelectric Coolers (TECs), used to stabilize the temperature of laser diodes, optical transceivers, photonic modules, and other temperature-sensitive components."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1979ETM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1979ETM 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}}