{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MC34063ECD-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"MC34063ECD-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/MC34063ECD-TR","factsUrl":"https://icboms.com/api/mcp/products/MC34063ECD-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MC34063ECD-TR, a DC-DC converter IC supporting step-up and step-down topologies, 1.5A internal switch, adjustable output, 33kHz switching frequency, 8-SOIC surface-mount package.","salesMarkdown":"## 1.5A switch, 33kHz — the workhorse buck/boost controller The MC34063ECD-TR is a DC-DC converter IC from STMicroelectronics that handles both step-up (boost) and step-down (buck) topologies with a single 1.5A internal switch. The 33kHz switching frequency is low by modern standards — you will need a larger inductor than a 500kHz part, but the trade-off is simpler layout and lower radiated noise. The input range spans 3V to 40V, making it suitable for unregulated wall warts, battery packs, or 12V/24V industrial rails. ## Adjustable output, positive or negative rail The output is adjustable from a 1.25V reference up to 38V, and the configuration can generate a positive or negative rail. That flexibility — plus the absence of synchronous rectification — means the external diode selection matters: use a Schottky with a Vf below 0.5V at the peak switch current to keep efficiency above 75% in a typical 12V-to-5V buck. The single-output design is straightforward; no multi-rail sequencing needed. ## Active production, 8-SOIC package, ROHS3","metaTitle":"MC34063ECD-TR – STMicroelectronics Buck/Boost Regulator","metaDescription":"MC34063ECD-TR from STMicroelectronics. Step-up/step-down DC-DC converter, 1.5A switch, 33kHz, adjustable output, 8-SOIC. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Up, Step-Down","Topology":"Buck, Boost","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"1.5A (Switch)","Number of Outputs":"1","Base Product Number":"MC34063","Output Configuration":"Positive or Negative","Frequency - Switching":"33kHz","Operating Temperature":"0°C~70°C(TA)","Synchronous Rectifier":"No","Voltage - Input (Max)":"40V","Voltage - Input (Min)":"3V","Voltage - Output (Max)":"38V","Supplier Device Package":"8-SOIC","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8500","priceTiers":[{"qty":1,"price":"$0.85000","currency":"USD"},{"qty":10,"price":"$0.75000","currency":"USD"},{"qty":25,"price":"$0.70400","currency":"USD"},{"qty":100,"price":"$0.57470","currency":"USD"},{"qty":250,"price":"$0.53384","currency":"USD"},{"qty":500,"price":"$0.45432","currency":"USD"},{"qty":1000,"price":"$0.37502","currency":"USD"},{"qty":2500,"price":"$0.37502","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ded0e68a4eca5ee7ff197c1dcca2753c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MC34063ECD-TR/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/MC34063ECD-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/MC34063ECD-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}