Analog Devices Inc. LTM4644/LTM4644-1 Quad DC/DC μModule Regulators

Analog Devices Inc. LTM4644/LTM4644-1 Quad DC/DC μModule® Regulators with Configurable 4A Output Array operate over an input voltage range of 4V to 14V or 2.375V to 14V with an external bias supply. An output voltage range of 0.6V to 5.5V is supported by the regulators and the LTM4644/LTM4644-1 outputs can be paralleled in an array for up to 16A capability. Analog Devices Inc. LTM4644/LTM4644-1 regulators provide 4A continuous (5A peak) output current per channel delivered by the high-efficiency design. Bulk input and output are the only capacitors needed.


  • Quad output step-down μModule regulator with 4A per output
  • 4V to 14V input voltage range
  • 2.375V to 14V with external bias
  • 0.6V to 5.5V output voltage
  • 4A DC, 5A peak output current each channel
  • Up to 5.5W power dissipation (TA = +60°C, 200 LFM, no heat sink)
  • ±1.5% total output voltage regulation
  • Current mode control, fast transient response
  • Place in parallel for higher output current
  • Output voltage tracking
  • Internal temperature sensing diode output
  • External frequency synchronization
  • Overvoltage, current, and temperature protection
  • 9mm × 15mm × 5.01mm BGA package


  • Multi-rail point-of-load regulation
  • FPGAs, DSPs, and ASICs

Typical Application

Analog Devices Inc. LTM4644/LTM4644-1 Quad DC/DC μModule Regulators
Published: 2017-05-16 | Updated: 2022-04-04