General Description
The MAX17101 is a dual Quick-PWM™ step-down power-supply (SMPS) controller with synchronous rectification, intended for main 5V/3.3V power generation in battery-powered systems. Low-side MOSFET sensing provides a simple low-cost, highly efficient current sense for providing valley current-limit protection. Combined with the output overvoltage and undervoltage protection features, this current limit ensures robust output supplies.

FEATUREs
♦Dual Quick-PWM
♦Internal 100mA 5V or Adjustable Linear Regulator
♦Independent LDO Bypass Input
♦Internal Boost Diodes
♦Secondary Feedback Input Maintains Charge Pump
♦3.3V 5mA RTC Power (Always On)
♦OUT1: 5V or 1.5V Fixed or 0.7V Adjustable Feedback
♦OUT2: 3.3V or 1.05V Fixed or Dynamic Adjustable
♦Dynamic 0 to 2V REFIN2 Input on Second Output
♦2V ±1% 50µA Reference
♦6V to 24V Input Range (28V max)
♦Ultrasonic Mode
♦Independent SMPS and LDO Enable Controls
♦Independent SMPS Power-Good Outputs
♦Minimal Component Count

APPLICATIONs
Notebook Computers
Main System Supply (5V and 3.3V Supplies)
Graphic Cards
DDR1, DDR2, DDR3 Power Supplies
Game Consoles
Low-Power I/O and Chipset Supplies
Two to Four Li+ Cells Battery-Powered Devices
PDAs and Mobile Communicators
Telecommunication