Analog Devices Inc. LTM4626 & LTM4638 µModule Regulators

Analog Devices LTM4626 and LTM4638 Step-Down µModule Regulators are complete step-down DC-DC switching mode power regulators in a tiny 6.25mm × 6.25mm BGA (Ball Grid Array) package. The µModule (microModule) package includes the switching controller, power FETs, inductor, and support components. Operating over an input voltage range of 3.1V to 20.0V, the LTM4626 and LTM4638 support an output voltage range of 0.6V to 5.5V, set by a single external resistor. The devices deliver a continuous output current of up to 12A (LTM4626) and 15A (LTM4638). Only bulk input and output capacitors are needed.

The LTM4626 and LTM4638 µModules support selectable discontinuous mode operation and output voltage tracking for supply rail sequencing. The high switching frequency and current mode control features of these devices enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage, overcurrent, and overtemperature protection. Integrated heat sink inductors add additional thermal protection.


  • 3.1V to 20V Input voltage range
  • 0.6V to 5.5V Output voltage range
  • Output current
    • 12A LTM4626
    • 15A LTM4638
  • ±1.5% Maximum total dc output voltage error over line, load, and temperature
  • Differential remote sensing amp
  • Current mode control, fast transient response
  • External frequency synchronization
  • Multiphase parallel current sharing with multiple LTM4626s
  • Output voltage tracking
  • Selectable discontinuous mode
  • Power good indicator
  • Overvoltage, overcurrent, and overtemperature protection
  • Inductors for heat sinks
  • Package of 49-lead BGA
  • Package dimensions:
    • LTM4626 at 6.25mm × 6.25mm × 3.87mm
    • LTM4638 at 6.25mm × 6.25mm × 5.02mm


  • Telecom, datacom, networking, and industrial equipment
  • Medical diagnostic equipment
  • Data storage rack units and cards
  • Test and debug systems

Technical Articles


LTM4626 Application Circuit

Application Circuit Diagram - Analog Devices Inc. LTM4626 & LTM4638 µModule Regulators

LTM4638 Application Circuit

Application Circuit Diagram - Analog Devices Inc. LTM4626 & LTM4638 µModule Regulators
Publicado: 2019-01-08 | Actualizado: 2023-07-31