
The HFG611-45 is a quasi-resonant (QR) flyback regulator with an integrated GaN FET, which is suitable for high-performance and high-frequency designs. The device is a secondary-side regulation (SSR) based primary regulator, and must work with secondary-side feedback circuitry. The higher frequency shrinks the passive component size and achieves higher power density. The HFG611-45 integrates a high-voltage start-up circuit and an X-capacitor discharger circuit, in addition to an ultra-low quiescent current (IQ) during burst mode. The no-load power consumption can be below 30mW. The HFG611-45 adopts MPS’s patented valley lock technique to restrain the valley jumping from one to another during steady state operation and help avoid audible noise. The wide supply voltage (VCC) range makes the device suitable for applications with a wide output voltage (VOUT) range without adding auxiliary winding. Advanced protections include primary-sense output over-voltage protection (ZCD OVP), primary-sense output under-voltage protection (ZCD UVP), VCC over-voltage protection (VCC OVP), output overload protection (OLP), internal brown-in and brownout (BI and BO, respectively), short-circuit protection (SCP), internal thermal shutdown (OTP), and under-voltage lockout (UVLO). The HFG611-45 is available in QFN-21 (5mmx6mm) and QFN-25 (7mmx7mm) packages.
YG GROUP (YUGUANG INTERNATIONAL(HK)CO.,LTD) supports reliable sourcing through quality controls and compliance documentation. Please confirm product requirements, applicable certifications and supporting documents before ordering.
HFG611-45 is an authentic electronic component manufactured by Monolithic Power Systems, categorized under Power Management ICs. It is supplied in the standard manufacturer-specified package footprint, providing industry-standard mechanical dimensions and terminal configurations for board-level assembly. Full pinout configurations, physical footprint drawings, and rated operating tolerances are documented in the official HFG611-45 datasheet above.
Electronic component spot-market pricing for HFG611-45 fluctuates based on real-time global availability, production date codes, minimum order quantities (MOQ), and packaging formats (e.g., Reel, Tube, Tray). Using an RFQ ensures you receive accurate, real-time volume pricing tied to verified, traceable inventory rather than stale catalog estimates.
Lead times for HFG611-45 depend on whether stock is dispatched from our central hub or regional franchise partners. Ready-to-ship inventory typically leaves the warehouse within 1–3 business days following quality inspection, while factory-direct or back-ordered allocations are confirmed with an estimated ship date upon RFQ reply.
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