General Description

The MAX8716/MAX8717/MAX8757 are dual, step down, interleaved, fixed-frequency, switch-mode power-supply (SMPS) controllers with synchronous rectification. They are intended for main (5V/3.3V) and I/O power generation in battery-powered systems.

Features

♦ Fixed 200kHz, 300kHz, or 500kHz Switching Frequency

♦ No Current-Sense Resistor Required

♦ 40/60 Optimal Interleaving

♦ Reduced Input-Capacitor Requirement

♦ 3.3V and 5V fixed or 1.0V to 5.5V Adjustable Outputs (Dual Mode™)

♦ 4V to 26V Input Range

♦ Independently Selectable PWM, Skip, and Low Noise Mode Operation

♦ Soft-Start and Soft-Stop

♦ 2V Precision Reference with 0.75% Accuracy

♦ Independent Power-Good Outputs

Applications

  2 to 4 Li+ Cell Battery-Powered Devices

  Notebook and Subnotebook Computers

  PDAs and Mobile Communicators

  Main or I/O Power Supplies