General Description
The MAX1907A/MAX1981A are single-phase, Quick-PWM™ master controllers for IMVP-IV™ CPU core supplies. Multi-phase operation is achieved using a Quick-PWM slave controller (MAX1980). Multiphase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties.

Features
♦ Quick-PWM Master Controllers
♦ Multiphase Conversion with Slave Controller
   (MAX1980)
♦ Active Voltage Positioning with Adjustable Gain
   and Offset
♦ Adjustable Slew Rate Control
♦ ±0.75% VOUT Accuracy Over Line, Load, and
   Temperature
♦ 6-Bit On-Board DAC (16mV Increments)
♦ 0.700V to 1.708V Output Adjust Range
♦ Selectable 200kHz/300kHz/550kHz/1000kHz
   Switching Frequency
♦ 2V to 28V Battery Input Voltage Range
♦ Drive Large Synchronous Rectifier MOSFETs
♦ Output Overvoltage Protection (MAX1907A Only)
♦ Undervoltage and Thermal Fault Protection
♦ Power Sequencing and Selectable Boot Voltage
♦ Low-Profile 40-Pin Thin QFN, 6mm ✕ 6mm
   Package

Applications
   IMVP-IV™ Notebook Computers
   Single-Phase CPU Core Supply
   Multiphase CPU Core Supply
   Voltage-Positioned Step-Down Converters
   Servers/Desktop Computers