General Description

The MAX8566 high-efficiency switching regulator delivers up to 10A load current at output voltages from 0.6V to (0.87 x VIN). The IC operates from 2.3V to 3.6V input supplies, making it ideal for point-of-load applications. The total output-voltage set error is less than ±1 over load, line, and temperature.

The MAX8566 operates in pulse-width-modulation (PWM) mode with a 250kHz to 2.4MHz switching frequency range that is programmable by an external resistor. The IC can be synchronized to an external clock in the same frequency range using the SYNC input. The high operating frequency minimizes the size of external components. Using low-RDS(ON) n-channel MOSFETs for both high- and low-side switches maintains high efficiency at both heavy-load and high switching frequencies.

Features

♦ Internal 8mΩ On-Resistance MOSFETs

♦ 10A Output PWM Step-Down Regulator

♦ ±1 Output Accuracy over Load, Line, and Temperature

♦ Operates from 2.3V to 3.6V Input Supply

♦ Adjustable Output from 0.6V to (0.87 x VIN)

♦ 250kHz to 2.4MHz Adjustable Frequency or SYNC Input

♦ Allows All-Ceramic-Capacitor Design

♦ SYNCOUT Drives 2nd Regulator 180° Out-of-Phase

♦ Prebiased or Monotonic Soft-Start

♦ Programmable Soft-Start Time

♦ Output Tracking or Sequencing

♦ Sourcing and Sinking Output Current

♦ Power-Good Output

♦ 32-Lead TQFN Package

♦ REFIN for DDR-Termination Application

Applications

   ASIC/CPU/DSP Core Voltages

   POL Power Supplies

   DDR Power Supplies

   Base-Station Power Supplies

   Fiber Power Supplies

   Telecom Power Supplies

   Network Power Supplies