General Description
The MAX17409 is a 1-phase Quick-PWM™ step-down VID power-supply controller for high-performance graphics processors. The Quick-PWM control provides instantaneous response to fast-load current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors.

Features
♦ 1-Phase Quick-PWM Controller
♦ ±6mV VOUT Accuracy Over Line, Load, and
   Temperature
♦ 6-Bit Graphics DAC (12.5mV LSB)
♦ Active Voltage Positioning with Adjustable Gain
♦ Accurate Droop and Current Limit
♦ Remote Output and Ground Sense
♦ Buffered 2V Reference Output for Offsets
♦ Power-Good Window Comparator
♦ Temperature Comparator
♦ Drives Large Synchronous Rectifier FETs
♦ 2V to 26V Power Input Range
♦ Adjustable Switching Frequency (600kHz max)
♦ Output Overvoltage and Undervoltage Protection
♦ Soft-Startup and Soft-Shutdown
♦ Internal Boost Diodes

Applications
   Graphics Core (GPU) Power Supplies
   Voltage-Positioned Step-Down Converters
   2-to-4 Li+ Cells Battery to Processor Core Supply Converters
   Notebooks/Desktops/Servers