{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM2PDA1Y-Z","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BM2PDA1Y-Z","canonicalUrl":"https://icboms.com/rohm/BM2PDA1Y-Z","factsUrl":"https://icboms.com/api/mcp/products/BM2PDA1Y-Z","rawCanonicalId":null},"summary":{"shortDescription":"ROHM BM2PDA1Y-Z, Non-Isolated PWM DC/DC Converter, Buck Topology, 730V Breakdown, 65kHz Switching, Soft Start, Fault Protection, 7-DIPK Package, Through Hole, -40°C to 105°C.","salesMarkdown":"## Non-isolated buck PWM controller with integrated 730V MOSFET The ROHM BM2PDA1Y-Z is a non-isolated PWM DC/DC converter IC designed for buck (step-down) topologies. It integrates a 730V breakdown MOSFET and a PWM controller in a single 7-lead DIPK through-hole package, simplifying the primary-side power stage for offline converters. Switching at 65 kHz, the part includes a full suite of fault protections: current limiting, over-load, over-voltage, and over-temperature shutdown. A soft-start feature reduces inrush stress on the output capacitor and load during power-up. The supply range (Vcc/Vdd) spans 11.1V to 26V, with a startup threshold of 9.3V. This allows direct biasing from a rectified auxiliary winding or a low-voltage rail. The duty cycle is limited to 40%, typical for a buck converter operating in continuous conduction mode. ## Industrial temperature grade and protection suite The integrated over-temperature protection shuts down the converter if the die exceeds the safe junction limit, providing a fail-safe in high-ambient or stalled-fan scenarios. The 730V breakdown MOSFET handles rectified mains with margin for line transients. The 65 kHz switching frequency is a common choice that balances transformer/inductor size against EMI filter cost.","metaTitle":"BM2PDA1Y-Z Buck Converter PWM IC, 730V, 65kHz, 7-DIPK","metaDescription":"ROHM BM2PDA1Y-Z non-isolated buck PWM controller with 730V breakdown, 65kHz switching, soft start, and fault protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tube","Topology":"Buck","Duty Cycle":"40%","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm), 7 Leads","lifecycle_stage":"eol_hot","Control Features":"Soft Start","Fault Protection":"Current Limiting, Over Load, Over Temperature, Over Voltage","Output Isolation":"Non-Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"9.3 V","Voltage - Breakdown":"730V","Frequency - Switching":"65kHz","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"7-DIPK","Voltage - Supply (Vcc/Vdd)":"11.1V ~ 26V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.83","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.83000","currency":"USD"},{"qty":10,"price":"$2.53800","currency":"USD"},{"qty":25,"price":"$2.39960","currency":"USD"},{"qty":100,"price":"$2.07980","currency":"USD"},{"qty":250,"price":"$1.97312","currency":"USD"},{"qty":500,"price":"$1.77048","currency":"USD"},{"qty":1000,"price":"$1.49318","currency":"USD"},{"qty":2500,"price":"$1.41852","currency":"USD"},{"qty":5000,"price":"$1.36520","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a78c2739f770f0cebc029c4e73b46f0f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can BM2PDA1Y-Z be used in a flyback topology?","answer":"No. The BM2PDA1Y-Z is specified as a non-isolated buck converter. Its duty cycle is limited to 40%, and the control architecture is optimised for step-down rather than flyback. For isolated flyback designs, look at ROHM's BM2P series isolated PWM controllers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BM2PDA1Y-Z","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BM2PDA1Y-Z 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}}