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Onsemi 0.6 A 2 MHz 100% Duty Cycle Step-Down Synchronous Regulator Part #NCV890430 | Regulator | DEX

Onsemi 0.6 A 2 MHz 100% Duty Cycle Step-Down Synchronous Regulator Part #NCV890430 | Regulator | DEX

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The NCV881930 is a 410 kHz fixed-frequency low quiescent current buck controller with spread spectrum that operates up to 38 V(typical). It may be synchronized to a clock or to separate NCV881930. Peak current mode control is employed for fast transient response and tight regulation over wide input voltage and output load ranges. Feedback compensation is internal to the device, permitting design simplification. The NCV881930 is capable of converting from an automotive input voltage range of 3.5 V (4.5 V during startup) to 18 V at a constant base switching frequency. Under load dump conditions up to 45 V the regulator shuts down. A high voltage bias regulator with automatic switchover to an external 5 V bias supply is used for improved efficiency. Several protection features such as UVLO, current limit, short circuit protection, and thermal shutdown are provided. High switching frequency produce slow output voltage ripple even when using small inductor values and an all-ceramic output filter capacitor, forming a space-efficient switching solution. Solution. (2 MHz version offered with NCV891930)



  • Internal 550 mΩ P Channel and 300 mΩ N-Channel Power Switches
  • Capable of 100% Duty Cycle Operation
  • VIN operating range of 3.5 V to 37 V
  • Withstands Load Dump to 45 V
  • 2 MHz Free-Running Switching Frequency
  • Shutdown Current Less than 10 μA
  • High Voltage Enable Pin
  • Synchonization Input Pin
  • Maximum DC Output Current of at least 0.6A
  • Fixed Output Voltage (5.0 V, 3.3 V and 2.5 V Versions)



  • Automotive Infotainment and Instrumentation
  • Automotive Body Applications
  • Linear Regulator Replacement
  • Rear View Camera


End Products

  • Automotive




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