General Description
   The MAX1718 step-down controller is intended for core CPU DC-DC converters in notebook computers. It features a dynamically adjustable output, ultra-fast transient response, high DC accuracy, and high efficiency needed for leading-edge CPU core power supplies. Maxim’s proprietary Quick-PWM™ quick-response, constant-ontime PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency.

FEATUREs
✦ Quick-PWM Architecture
✦ ±1% VOUT Accuracy Over Line and Load
✦ 5-Bit On-Board DAC with Input Muxes
✦ Precision-Adjustable VOUT Slew Control
✦ 0.6V to 1.75V Output Adjust Range
✦ Precision Offset Control
✦ Supports Voltage-Positioned Applications
✦ 2V to 28V Battery Input Range
✦ Requires a Separate 5V Bias Supply
✦ 200/300/550/1000kHz Switching Frequency
✦ Over/Undervoltage Protection
✦ Drives Large Synchronous-Rectifier FETs
✦ 700µA (typ) ICC Supply Current
✦ 2µA (typ) Shutdown Supply Current
✦ 2V ±1% Reference Output
✦ VGATE Blanking During Transition
✦ Small 28-Pin QSOP Package

APPLICATIONs
   IMVP-II™ Notebook Computers
   2-Cell to 4-Cell Li+ Battery to CPU Core Supply
   Converters
   5V to CPU Core Supply Converters