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NCP81039 Datasheet Synchronous Buck Controller

Manufacturer: onsemi

Overview: NCP81039 Product Preview Synchronous Buck Controller with Auto Power Saving Mode and 2-Bit VID Inputs for System Agent NCP81039 is a synchronous buck controller that is optimized for converting the battery voltage or adaptor voltage into power supply rails required in notebook and desktop system. NCP81039 is designed for applications requiring dynamically selected slew−rate controlled output voltages. The soft−start is programmed by a single capacitor. Voltage identification logic−inputs select four resistor programmed set−point reference voltages that directly set the output voltage of the converter between 0.65 V to 1.5 V. NCP81039 supports high efficiency, fast transient response and provides power good signal. ON Semiconductor proprietary adaptive−ripple control enables seamless transition from CCM to DCM, where converter runs at reduced switching frequency with much higher efficiency. The part operates with input voltage ranging from 3.3 V to 28 V. NCP81039 is available in a 20−pin 3 mm x 3 mm QFN package.

Key Features

  • Wide Input Voltage Range: from 3.3 V to 28 V.
  • Three Selectable Fixed Frequency 300 KHz, 400 KHz or 600 KHz.
  • 2.
  • Bit VID Selects Four Independent Voltages from 0.65 V to 1.5 V.
  • ±1.0% System Accuracy.
  • Differential Remote Output Voltage Sensing.
  • Soft Transient Control Reduces Inrush Current and Audio Noise.
  • Build.
  • in Power.
  • Good Masking Supports Voltage Identification (VID) On.
  • The.
  • Fly Transients.

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