Standalone VBUS-powered controller targets 5V USB-C charging

March 19, 2020 //By Julien Happich
VBUS
The STUSB4500L from STMicroelectronics is a small-footprint addition to the Company’s USB-C controller IC family designed and certified for pure 5V sink-only applications.

All mandatory features to use the USB-C connector as a 5V universal power plug are integrated, allowing designers to implement USB-C charging solutions quickly and easily without studying the standard or writing code. ST’s new USB-C controller IC is a stand-alone, plug-and-play interface product, targeting low-voltage applications such as Bluetooth speakers, computer accessories, Wi-Fi access points, point-of-sale equipment, LED lighting, and USB dongles. It can also be used for powering equipment such as single-board computers and hardware development kits. The controller IC runs without additional code and requires no external support from the microcontroller, which eases adoption of the USB-C connector standard by saving time-consuming design work. The STUSB4500L is auto-powered via VBUS from the connected source and does not need to be supplied from a local battery or on-board power. Zero leakage current prevents draining the battery when not charging. Input over-voltage protection prevents low-voltage equipment being damaged if it is incorrectly connected, for example, to a 20V source from a USB PD AC adapter rather than the required 5V supply. The STUSB4500L is in production now, in a choice of 4x4mm QFN-24 package or 2.6x2.6mm CSP-25 chip-scale package.

STMicroelectronics - www.st.com


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