{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MC34063ADR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MC34063ADR","canonicalUrl":"https://icboms.com/texas-instruments/MC34063ADR","factsUrl":"https://icboms.com/api/mcp/products/MC34063ADR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MC34063ADR, adjustable buck-boost switching regulator, 1.5A switch current, 100 kHz, 8-SOIC surface-mount package.","salesMarkdown":"## What the 1.5 A switch rating means for your rail The MC34063ADR integrates a 1.5 A switch transistor — that is the peak current the internal pass device can handle, not the continuous output current. In a typical buck converter from 12 V to 5 V, you can expect about 750 mA continuous output before the switch current limit is hit; for a boost from 5 V to 12 V, the available output current drops to roughly 400 mA because the switch handles the input current, which is higher than the output. If your load exceeds that, you need an external pass transistor or a higher-current regulator like the LMS3655MQURNLRQ1. ## 100 kHz switching — forgiving layout, larger passives The 100 kHz switching frequency is a deliberate choice: it keeps switching losses low and makes the PCB layout forgiving — you can route the power path without worrying about MHz-range ringing. The trade-off is that the inductor and output capacitor values are larger than what a 400 kHz or 2.1 MHz part would need. For a 5 V / 500 mA buck, expect a 100–220 µH inductor and 100–470 µF output cap; compare that to the LMR33630APCQRNXRQ1 at 2.1 MHz, which would use a 4.7 µH inductor and 22 µF ceramic. ## Commercial temperature range — indoor use only If your board goes into a motor drive, outdoor telecom cabinet, or automotive bay, you need the industrial or automotive grade sibling — the LMS3655MQURNLRQ1, for example, is rated -40°C to 150°C and is AEC-Q100 qualified. ## Buck, boost, or invert — one part for multiple rails The MC34063ADR can be configured as a step-down (buck), step-up (boost), or voltage-inverting regulator. The output is adjustable from 1.25 V up to 40 V. That flexibility lets you use one line item on the BOM for several different rail voltages — useful for a mixed-voltage board that needs 3.3 V, 5 V, and a negative bias, all from a single regulator family.","metaTitle":"MC34063ADR TI Buck-Boost Regulator 1.5A 100kHz 8-SOIC","metaDescription":"MC34063ADR from Texas Instruments — adjustable buck/boost/inverting regulator, 1.5A switch, 100kHz, 8-SOIC. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","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":"100kHz","Operating Temperature":"0°C~70°C(TA)","Synchronous Rectifier":"No","Voltage - Input (Max)":"40V","Voltage - Input (Min)":"3V","Voltage - Output (Max)":"40V (Switch)","Supplier Device Package":"8-SOIC","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7400","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.74000","currency":"USD"},{"qty":10,"price":"$0.64700","currency":"USD"},{"qty":25,"price":"$0.60800","currency":"USD"},{"qty":100,"price":"$0.49630","currency":"USD"},{"qty":250,"price":"$0.46100","currency":"USD"},{"qty":500,"price":"$0.39234","currency":"USD"},{"qty":1000,"price":"$0.31388","currency":"USD"},{"qty":2500,"price":"$0.28445","currency":"USD"},{"qty":5000,"price":"$0.27760","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4e044b587f1f11d06da1dc60b5c13058.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between MC34063ADR and MC34063A?","answer":"The MC34063ADR is the surface-mount 8-SOIC version of the classic MC34063A. The 'D' suffix indicates the SOIC package; the 'R' suffix indicates Tape & Reel packaging. The electrical specifications — 1.5 A switch, 100 kHz, adjustable output — are identical to the MC34063A. The pinout is the same, so a board designed for the DIP-8 MC34063A can be adapted to the SOIC footprint with a layout change."},{"question":"Can MC34063ADR be used for negative voltage output?","answer":"Yes. The MC34063ADR supports a positive or negative output configuration. In the inverting topology, the output voltage can be set from -1.25 V down to -40 V (relative to the input ground). The same 1.5 A switch current rating applies, but the available output current in an inverting converter is typically lower than in a buck — budget about 300–400 mA for a -5 V output from a 12 V input."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MC34063ADR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MC34063ADR 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}}