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 controllers
  • Wide input voltage range: 6.5V to 24V
  • Programmable output voltage range: 2V-3.3V and 3V-5V
  • PWM and light-load operation
  • Output over and under voltage protection
  • Built-in output discharge circuits
  • 3.3V and 5V linear regulators for standby power
  • SMBus compatible programming interface


The PSG5320 is a highly integrated power management unit with two synchronous step-down controllers for system power in notebooks. Independent, programmable interfaces for monitoring activity in the system, 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 system demand. The real-time tracking of supply voltage to system activity enables maximum system power savings by minimizing the power spent on maintaining worst-case headroom in the power distribution network.


  • Notebook computers
  • 5V/3.3V supplies
  • System power supplies
  • Radios
  • DVD Players
  • Gaming Systems


  • PSG5320 Datasheet (by request)

Evaluation Kits

  • PSG5320 Evaluation Kit (by request)


PSG5320 schematic

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