Features and Benefits

  • Complete 48V Input to Low Voltage Dual 25A Supply that Can Scale to 300A
  • Dual Analog Loops with Digital Interface for Compensation, Control and Monitoring
  • Input Voltage Range: 30V to 58V
  • Output Voltage Range: 0.5V to 1.5V
  • ±3% Output Current Readback Accuracy (–20° to 125°C)
  • 88% Efficiency for 48V to 1V at 50A
  • ±0.5% Output Voltage Accuracy Over Temperature
  • 400kHz PMBus-Compliant I2C Serial Interface
  • 16mm × 16mm × 7.72mm BGA Package

Product Details

The LTM4664 is a complete non-isolated 48V input high efficiency step-down µModule® regulator with dual 25A outputs. The switching controllers, power MOSFETs, inductors and supporting components are included. Only external capacitors are needed to complete the design. Operating over a 30V to 58V input voltage range, the LTM4664 supports an output voltage of 0.5V to 1.5V at up to 75W. An intermediate output at 25% • VIN is also available. The LTM4664 product video is available on the website.

The LTM4664 dual 25A regulators utilize digitally programmable analog control loops, precision data acquisition circuitry and EEPROM with ECC. The LTM4664’s 2-wire serial interface allows the 25A outputs to be margined, tuned and ramped up and down at programmable slew rates and sequencing delay times. True input current sense, output currents and voltages, input and output power, temperatures, uptime and peak values are all readable. 


  • 48V Systems
  • Computer and Networking Equipment
  • Electronic Test Equipment
  • Storage Systems

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.