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Switching Voltage Regulator

Switching Voltage Regulator [TO-220-5 FP (Formed Leads)]

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FSCQ1565RTYDTU, A Quasi-Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to a conventional hard-switched converter with a fixed switching frequency. Therefore, a QRC is well suited for noise-sensitive applications, such as color TV and audio. Each product in the FSCQ seriescontains an integrated Pulse Width Modulation (PWM) controller and a SenseFET. This seriesis specifically designed for quasi-resonant off-line Switch Mode Power Supplies (SMPS) with minimal external components.The PWM controller includes an integrated fixed frequency oscillator, under-voltage lockout, leading-edge blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry.

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Compared with a discrete MOSFET and PWM controller solution, the FSCQ seriescan reduce total cost, component count, size, and weight;while increasing efficiency, productivity, and system reliability. These devices provide a basic platform for cost-effective designs of quasi-resonant switching flyback converters.Related ResourcesAN-4146 —Design Guidelines for Quasi-Resonant Converters Using FSCQ-Series Fairchild Power SwitchAN-4140 —Transformer Design Consideration for Offline Flyback Converters Using Fairchild PowerSwitchOrdering Information Part NumberPackageMarking CodeBVDSS(V)RDSONMax. (Ω)FSCQ0565RTYDTUTO-220F-5L (Forming)CQ0565RT6502.2FSCQ0765RTYDTUTO-220F-5L (Forming)CQ0765RT6501.6FSCQ0965RTYDTUTO-220F-5L (Forming)CQ0965RT6501.2FSCQ1265RTYDTUTO-220F-5L (Forming)CQ1265RT6500.9FSCQ1565RTYDTUTO-220F-5L (Forming)CQ1565RT6500.7

Nom. number 9000588935
Pr-in ON Semiconductor
Weight, g 3
Manufacturer ON Semiconductor


  • Optimized for Quasi-Resonant Converter (QRC)
  • Advanced Burst-Mode Operation for under 1W Standby Power Consumption
  • Pulse-by-Pulse Current Limit
  • Overload Protection (OLP) –Auto Restart
  • Over-Voltage Protection (OVP) –Auto Restart
  • Abnormal Over-Current Protection (AOCP) –Latch
  • Internal Thermal Shutdown (TSD) –Latch
  • Under-Voltage Lockout (UVLO) with Hysteresis
  • Low Startup Current (Typical: 25μA)
  • Internal High Voltage SenseFET
  • Built-in Soft-Start (20ms)
  • Extended Quasi-Resonant Switching

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So After many years of development, we have a large stock in stock, reasonable price and fast delivery. Therefore we stock millions of hard-to-find parts from trusted resources. Moreover Megatronika has QA specialist that only pass those products which fits in our quality supply demand. So Either you purchase an item from us, or sign a contract for enterprise solutions. However for more bulk product purchase or just single item purchase. In addition to this we take care of all your needs and quality aspects throughout the process. So get FSCQ1565RTYDTU now.


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