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