New Power Distribution Switch Series BD22xx

ROHM Semiconductor introduces new Power Switches for USB ports and Memory Card slots. USB Slots were first used in computers, but today they have spread into many different other applications like set top boxes, TVs, navigation systems and many other consumer devices. To prevent the connected USB device to draw a too high current, each slot needs a protection – the power switch.
Current switches have a big range for the current threshold so that the power supply always has to be designed bigger as they are actually needed. To optimize this, the new series of power switches has improved the accuracy of the threshold to ±10% for a typical current of 1.275A and ±18% for a typical current of 765mA. This helps to reduce the total system cost because unnecessary margins don’t need to be implemented.
Samples of nearly all different types are already available – some products are already available in mass production.