LTM4638IY#PBF

• Single-Output Step-Down (buck) DC-DC Converter U Module
• 15 A Output Current
• 3.1 V to 20 V Input Voltage Range
• 0.6 V to 5.5 V Adjustable Output
• 600 K Hz Switching Frequency
• 49-Pin BGA package, 5.36 Mm Height
• -40 C to 125 C Operating range, 125 C Maximum Junction Temperature
• RoHS Compliant

The Analog Devices LTM4638IY#PBF is a single-output step-down DC-DC converter u Module rated at 15 A, in a 49-pin BGA package 5.36 mm tall. It operates from a 3.1 V to 20 V input, uses a buck topology switching at 600 k Hz, and produces an output adjustable from 0.6 V to 5.5 V. The LTM4638IY#PBF is rated from -40 C to 125 C with a 125 C maximum junction temperature and is RoHS compliant. A u Module regulator integrates the controller, power MOSFETs, inductor and compensation components inside the package, so a 15 A rail is realised with the module plus input and output capacitors and a feedback resistor.

15 A point-of-load u Module regulators are used to generate the core, memory and I/O rails for FPGAs, ASICs, So Cs, network processors and DSPs, typically placed close to the load on communications line cards, industrial and medical instruments, test equipment, and compact server and storage boards. The 0.6 V lower output limit covers modern low-voltage core rails, while the 20 V input ceiling accommodates 12 V intermediate bus architectures with transient headroom. The main design trade is board area and cost against the engineering time, layout risk and magnetics selection a discrete 15 A converter would require. Typical buyers are power and board-level hardware designers, communications and industrial equipment OEMs, and test and measurement manufacturers.