DC-DC μModule Buck Regulator – LTM4653


The DC-DC μModule Buck Regulator – LTM4653 from Analog Devices is an ultralow noise 58 V, 4 A DC/DC step-down μModule regulator designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. 

It operates over an input voltage range of 3.1 V to 58 V and supports an output voltage range of 0.5 V to 94% of VIN, and a switching frequency range of 250kHz to 3MHz (400kHz default).


  1. Conduct live testing of the LTM4653 DC-DC μModule Buck Regulator on real hardware
  2. Perform the following key test evaluations:
    • Operation Mode – Switching waveforms
    • Regulation tests – Line Regulation and Load Regulation
    • Performance tests – Startup transient, Load transient and Efficiency
    • Boundary conditions tests – Input voltage boundary conditions
  3. Observe and analyze waveforms at various test points, such as: 
    • Input voltage
    • Input current 
    • Output voltage
    • Output current
  4. Computed values of regulation and efficiency based on the real-time data are made available to the user.


  • Evaluating the board connected through a real power supply and load system setup. 
  • Exercise all the feature tests with different input and output parameters in real-time.
  • Testing the boundary condition of synchronous buck regulator


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