General Description
The MAX17000A pulse-width modulation (PWM) controller provides a complete power solution for notebook DDR, DDR2, and DDR3 memory. It comprises a stepdown controller, a source-sink LDO regulator, and a reference buffer to generate the required VDDQ, VTT, and VTTR rails.

Features
♦ SMPS Regulator (VDDQ)
    Quick-PWM with 100ns Load-Step Response
    Output Voltages—Preset 1.8V, 1.5V, or Adjustable 1.0V to 2.5V
    1% VOUT Accuracy Over Line and Load
    26V Maximum Input Voltage Rating
    Accurate Valley Current-Limit Protection
    200kHz to 600kHz Switching Frequency
♦ Source/Sink Linear Regulator (VTT)
    ±2A Peak Source/Sink
    Low-Output Capacitance Requirement
    Output Voltages-Preset VDDQ/2 or REFIN Adjustable from 0.5V to 1.5V
♦ Soft-Start/Soft-Shutdown
♦ SMPS Power-Good Window Comparator
♦ VTT Power-Good Window Comparator
♦ Selectable Overvoltage Protection
♦ Undervoltage/Thermal Protections
♦ ±3mA Reference Buffer (VTTR)

Applications
    Notebook Computers
    DDR, DDR2, and DDR3 Memory Supplies
    SSTL Memory Supplies