General Description
The MAX1953/MAX1954/MAX1957 is a family of versatile, economical, synchronous current-mode, pulse-width modulation (PWM) buck controllers. These step-down controllers are targeted for applications where cost and size are critical.

Features
♦ Low-Cost Current-Mode Controllers
♦ Fixed-Frequency PWM
♦ MAX1953 1MHz Switching Frequency Small Component Size, Low Cost Adjustable Current Limit
♦ MAX1954 3V to 13.2V Input Voltage 25A Output Current Capability 93% Efficiency 300kHz Switching Frequency
♦ MAX1957 Tracking 0.4V to 0.86VIN Output Voltage Range Sinking and Sourcing Capability of 3A
♦ Shutdown Feature
♦ All N-Channel MOSFET Design for Low Cost
♦ No Current-Sense Resistor Needed
♦ Internal Digital† Soft-Start
♦ Thermal Overload Protection
♦ Small 10-Pin µMAX Package

Applications
    Printers and Scanners
    Graphic Cards and Video Cards
    PCs and Servers
    Microprocessor Core Supply
    Low-Voltage Distributed Power
    Telecommunications and Networking