Packet Digital, LLC


  • Configurable On-Demand Power® algorithm to adaptively scale regulated output voltage in correlation with monitored system activity
  • System sensory interfaces to monitor activity and demand for sub-domains on both regulated voltage domains
  • Dual, constant-on-time, voltage feed-forward, synchronous step-down PWM controllers
  • Wide input voltage range: 6.5V to 24V
  • Programmable output voltage range: 3V to 5V
  • PWM and light-load operation
  • Temperature compensated RDS(ON) current sensing
  • Internal softstart
  • Output over and under voltage protection
  • Built-in output discharge circuit
  • SMBus compatible programming interface
  • 8x8mm or 7x7mm 56-pin QFN package


The PSG5220 is a highly integrated power management IC with dual synchronous step-down PWM controllers for SATA drive power management in notebooks. Interfaces for monitoring activity, coupled with advanced On-Demand Power algorithms, enable the regulated output voltages of the integrated switching regulators to be adaptively scaled in correlation with actual power demand. The real-time tracking of supply voltage to activity enables maximum power savings by minimizing the power spent on maintaining worst-case headroom in power distribution.


  • Mobile (notebook and netbook) Computers
  • Ultra-Mobile PCs
  • Portable Media Players
  • Other Mobile Devices
  • Radios
  • DVD Players
  • Gaming Systems
  • Televisions
  • Set Top Boxes


Evaluation Kits

  • PSG5220 Evaluation Kit (by request)

Application Notes


Watch the video below to see how Packet Digital's On-Demand Power® technology and PowerSage® integrated circuits can decrease power consumption, extend battery life, and decrease noise and heat in a laptop.

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PSG5220 schematic

Purchasing and Support

Buy it at Digi-Key.

Contact Us for your purchasing and support needs.

Online Support is also available for registered customers.