LTM4657EY#PBF

• 8A Maximum Output current, Single Output
• 3.1V to 20V Input Voltage Range
• 500k Hz Switching frequency, Current-Mode Control
• 49-Pin BGA Package with 49 balls, 4.21mm Height
• Integrated Inductor and Power Stage in One Module
• -40°C to 125°C Operating range, 125°C Maximum Junction Temperature

The LTM4657EY#PBF is a current-mode switching regulator module from Analog Devices in a 49-pin BGA package. It accepts a 3.1V to 20V input and delivers up to 8A of output current from a single output, switching at 500k Hz. The module stands 4.21mm tall and is rated for -40°C to 125°C operation with a 125°C maximum junction temperature. A regulator module of this type integrates the switching controller, power stage and inductor in one package, so the design needs only external input and output capacitors. Analog Devices lists the LTM4657EY#PBF as a production part.

The LTM4657EY#PBF is chosen when board area and design time matter more than component cost — the integrated inductor removes the magnetics selection and layout work that dominates a discrete buck design. Typical placements are FPGA, ASIC and processor core rails, DDR memory supplies, and distributed point-of-load conversion on dense digital boards where several 8A rails must fit near their loads. Its 20V input ceiling covers 5V and 12V intermediate buses directly. The 125°C rating supports industrial and communications equipment operating without forced airflow. Buyers are typically networking, test and industrial hardware designers and contract manufacturers building high-density boards.