{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISL62871HRUZ-T","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"ISL62871HRUZ-T","canonicalUrl":"https://icboms.com/renesas/ISL62871HRUZ-T","factsUrl":"https://icboms.com/api/mcp/products/ISL62871HRUZ-T","rawCanonicalId":null},"summary":{"shortDescription":"Renesas ISL62871HRUZ-T Robust Ripple Regulator™ (R3) series, single-phase synchronous buck PWM controller, 3.3V to 25V supply, 300kHz fixed switching, transistor driver output, 16-UTQFN (2.6x1.8 mm), -10°C to 100°C.","salesMarkdown":"## 3.3V to 25V input — what it means for the intermediate bus The ISL62871HRUZ-T is a single-phase synchronous buck PWM controller from Renesas' Robust Ripple Regulator™ (R3) series. Its 3.3V to 25V Vcc/Vdd supply range lets it regulate a downstream rail from common intermediate buses — 5V, 12V, or 24V — without an extra bias regulator. The 300kHz fixed switching frequency is a middle-ground choice: low enough to keep MOSFET gate-drive losses moderate, high enough to shrink the output inductor to a small footprint. Synchronous rectification is built in, so the design gets the efficiency benefit of a low-side FET rather than a catch diode, which matters for thermal management in enclosed or airflow-limited systems. ## Temperature grade — commercial indoor only Rated for -10°C to 100°C ambient, this controller is aimed at commercial and indoor equipment — networking gear, industrial control panels, test instrumentation, and consumer power supplies. It does not carry the -40°C low end needed for automotive under-hood, outdoor telecom cabinets, or cold-start motor drives. If the BOM calls for extended temperature, the ISL62871HRUZ-T is not the fit without a temperature-grade variant check. ## Control features for sequencing and protection Enable, phase control, power good, and soft start are integrated. Soft start limits inrush on the output during startup. The power-good flag can drive an FPGA or MCU enable input or a downstream regulator's enable pin for rail sequencing. Phase control allows synchronizing multiple R3 controllers to reduce input ripple and EMI — useful when the design has several point-of-load rails on the same board. ## Package and layout — 16-UTQFN (2.6x1.8 mm) The 16-UTQFN package measures 2.6x1.8 mm, a very compact land pattern for a controller with this feature set. Surface-mount only. The small footprint helps on dense PCBs but puts the decoupling capacitors close to the Vcc and Vdd pins. The exposed thermal pad (the UTQFN's central pad) needs a via array to the ground plane to pull heat out of the die; without it, junction temperature rises quickly above 85°C ambient at moderate load. ## Lifecycle and sourcing Renesas lists the ISL62871HRUZ-T as Active with ROHS3 compliance. For a new design, this part carries no imminent obsolescence risk.","metaTitle":"ISL62871HRUZ-T Buck Controller, 3.3V-25V Input, 300kHz","metaDescription":"ISL62871HRUZ-T from Renesas: single-phase synchronous buck controller, 3.3V to 25V supply, 300kHz switching, 16-UTQFN. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"Robust Ripple Regulator™ (R3)","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"Robust Ripple Regulator™ (R3)","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":"16-UFQFN","lifecycle_stage":"eol_hot","Control Features":"Enable, Phase Control, Power Good, Soft Start","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"300kHz","Operating Temperature":"-10°C ~ 100°C (TA)","Synchronous Rectifier":"Yes","Supplier Device Package":"16-UTQFN (2.6x1.8)","Voltage - Supply (Vcc/Vdd)":"3.3V ~ 25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.02","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.02000","currency":"USD"},{"qty":10,"price":"$3.60800","currency":"USD"},{"qty":25,"price":"$3.41040","currency":"USD"},{"qty":100,"price":"$2.95580","currency":"USD"},{"qty":250,"price":"$2.80424","currency":"USD"},{"qty":500,"price":"$2.51622","currency":"USD"},{"qty":1000,"price":"$2.38810","currency":"USD"},{"qty":3000,"price":"$2.38810","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/342fdd2f9661302c3129bdc01d76625c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does ISL62871HRUZ-T support 5V output with 12V input?","answer":"Yes. The 3.3V to 25V Vcc/Vdd supply range covers 12V input, and as a step-down (buck) controller it can regulate a 5V output. The 300kHz switching frequency and synchronous rectification are well suited to a 12V-to-5V conversion at moderate loads."},{"question":"What is the switching frequency of the ISL62871HRUZ-T?","answer":"The switching frequency is 300kHz. It is fixed — the part does not support clock synchronization to an external clock."},{"question":"Is the ISL62871HRUZ-T RoHS compliant?","answer":"Yes, it is ROHS3 compliant per Renesas."},{"question":"What are the top equivalent or replacement parts for ISL62871HRUZ-T?","answer":"Within the same Robust Ripple Regulator™ (R3) series, Renesas offers other single-phase buck controllers with similar supply ranges and feature sets. The closest pin-compatible alternative would be another R3-series controller in the same 16-UTQFN package, but the exact pin compatibility depends on the specific feature set (enable polarity, soft-start timing, phase control options). Verify the pinout against the target design's requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/ISL62871HRUZ-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/ISL62871HRUZ-T 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}}