Features

• 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 regulated voltage domains
• Constant-on-time, voltage feed-forward, synchronous step-down PWM controller
• Input voltage range: 6.5V to 24V
• Programmable output voltage supporting DDR2, DDR3, DDR3L, DDR3UL, and LPDDR voltages
• PWM and light-load operation
• Temperature compensated RDS(ON) current sensing
• Internal softstart
• Output over and under voltage protection
• Built-in output discharge circuit
• Power Good output
• 1.8V linear regulator
• SMBus compatible programming interface
• QFN package

Description

The PSG5410 is a highly integrated power management IC with a synchronous step-down controller designed to supply VDDQ to DDR memory. A programmable interface for monitoring activity in the system, coupled with an advanced On-Demand Power^® algorithm, enable the regulated output voltage of the integrated switching regulator 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.

Applications

• DDR2, LPDDR Memory Power Supplies
• DDR3, DDR3L, DDR3UL Memory Power Supplies
• GDDR3, GDDR4, and GDDR5 Memory Power Supplies
• Mobile computers
• Servers
• Networking Equipment