MPM3840GQV-Z

• Synchronous Step-Down Power Module with the Inductor Integrated in the Package
• 4A Output Current from a 5.5V Input per the Product Title
• Power Good Output for Supply Sequencing and Fault Indication per the Product Title
• Compact 5mm by 3mm Module Footprint
• Listed by Monolithic Power Systems in Active production, RoHS Compliant

The Monolithic Power Systems MPM3840GQV-Z is a synchronous step-down power module rated for 4A output from a 5.5V input, with an integrated inductor and a power good output, as identified in its product title. A power module differs from a regulator IC in that the inductor and passive components are packaged with the silicon, so the designer places one part instead of laying out a switching loop, which removes most of the EMI and layout risk from the design. The MPM3840GQV-Z measures 5mm by 3mm. Monolithic Power Systems lists it in active production, RoHS compliant with a REACH SVHC declaration of Yes; note that this catalog record carries only six attributes, so the electrical figures come from the product title.

Power modules are specified when board space, time to market or EMI performance matters more than component cost, because the switching loop is already optimised inside the package and the design collapses to a handful of external capacitors. A 4A module from a 5.5V input is a point-of-load part, generating the core, memory and I/O rails for processors, FPGAs, So Cs and sensor front ends from an upstream 5V or 3.3V bus. The power good signal lets it participate in a multi-rail power-up sequence, which is a requirement on most modern processors. Buyers are industrial, medical, networking and instrumentation designers, particularly on compact boards where the 5mm by 3mm footprint replaces a regulator plus inductor plus surrounding passives.