General Description

The MAX15048/MAX15049 are triple-output pulse-width modulated (PWM), step-down, DC-DC controllers with tracking (MAX15048) and sequencing (MAX15049) options. The devices operate over the 4.7V to 23V inputvoltage range. Each PWM controller provides an adjustable output down to 0.6V and delivers up to 15A of load current with excellent load and line regulation. The MAX15049 can start into prebiased outputs. The MAX15048/MAX15049 are optimized for high-performance, small-size power management solutions.

Features

♦ 4.7V to 23V or 5V ±10 Input Voltage Range

♦ Triple-Output Synchronous Buck Controllers with 120° Out-of-Phase Operation

♦ Prebias Power-Up (MAX15049)

♦ Output Voltage Adjustable Down to 0.6V

♦ Coincident/Ratiometric Tracking (MAX15048)

♦ Accurate Sequencing Through Enable Threshold (MAX15049)

♦ External Compensation for Maximum Flexibility

♦ Digital Soft-Start (MAX15048/MAX15049) and Soft-Stop (MAX15048)

♦ Lossless Valley-Mode Current Sensing Using RDS(ON) of the Low-Side MOSFET

♦ PGOOD Output

♦ Integrated Bootstrap Diodes

♦ Programmable Switching Frequency from 200kHz to 1.2MHz

♦ Thermal Shutdown and Hiccup Mode Short-Circuit Protection

♦ Space-Saving (5mm x 5mm), 32-Pin TQFN Package

Applications

    Point-of-Load DC-DC Converters

    ASIC/CPU/DSP Core and I/O Voltages

    DDR Power Supply

    Base-Station Power Supplies

    Telecom and Networking Power Supplies

    RAID Control Power Supplies

    Set-Top Boxes