General Description
The MAX1636 is a synchronous, buck, switch-mode, power-supply controller that generates the CPU supply voltage in battery-powered systems. It achieves ±1% output voltage accuracy and offers the excellent load transient response needed by upcoming generations of dynamic-clock CPUs.

Features
♦ ±1% DC Accuracy (Adjustable Mode)
♦ Output Overvoltage Crowbar Protection
♦ Output Undervoltage Shutdown
♦ Adjustable Switching Frequency to 340kHz
♦ Low-Dropout Operation
♦ Idle Mode Pulse-Skipping Operation
♦ 1.10V to 5.5V Adjustable Output Voltage
♦ 2.5V/3.3V Dual-Mode Fixed-Output Settings
♦ Internal Digital Soft-Start
♦ 1.1V ±1% Reference Output
♦ 3μA (typ) Shutdown Current
♦ Open-Drain Power-Good Output (RESET)
♦ 20-Pin SSOP Package

Applications
    Notebook Computers
    Subnotebook Computers
    Desktop Computers
    Bus-Termination Supplies