4A current switch with high/low-side sensing
The MAX1562ESA+ is a current switch from Analog Devices, designed to monitor and switch loads up to 4A continuous. It supports both high-side and low-side sensing, meaning the same part can be placed in the power rail or the return path depending on the load configuration. The input voltage range spans 4V to 5.5V, covering standard 5V logic rails and 3.3V-derived supplies.
Package and board-fit note
The supplier device package is listed as 8-SOIC, and the part ships in tube format. The 4A output current rating means the on-resistance and thermal performance of the internal switch must be considered in the board layout — the SOIC-8 package's copper pad area under the part sets the effective thermal resistance, so a solid ground-plane connection on the die-attach pad is recommended for sustained 4A operation.