General Description

The MAX5066 is a two-phase, configurable single- or dual-output buck controller with an input voltage range of 4.75V to 5.5V or from 5V to 28V. Each phase of the MAX5066 is designed for 180° operation. A mode pin allows for a dual-output supply or connecting two phases together for a single-output, high-current supply. Each output channel of the MAX5066 drives n-channel MOSFETs and is capable of providing more than 25A of load current.

Features

♦ 4.75V to 5.5V or 5V to 28V Input

♦ Dual-Output Synchronous Buck Controller

♦ Configurable for Two Separate Outputs or One Single Output

♦ Each Output is Capable of Up to 25A Output Current

♦ Average Current-Mode Control Provides Accurate Current Limit

♦ 180° Interleaved Operation Reduces Size of Input Filter Capacitors

♦ Limits Reverse Current Sinking When Operated in Parallel Mode

♦ Each Output is Adjustable from 0.61V to 5.5V

♦ Independently Programmable Adaptive Voltage Positioning

♦ Independent Shutdown for Each Output

♦ 100kHz to 1MHz per Phase Programmable Switching Frequency

♦ Oscillator Frequency Synchronization from 200kHz to 2MHz

♦ Hiccup Mode Overcurrent Protection

♦ Overtemperature Shutdown

♦ Thermally Enhanced 28-Pin TSSOP Package Capable of Dissipating 1.9W

♦ Operates Over -40°C to +85°C or -40°C to +125°C Temperature Range

Applications

    High-End Desktop Computers

    Graphics Cards

    Networking Systems

    Point-of-Load High-Current/High-Density

    Telecom DC-DC Regulators

    RAID Systems