24-QFN USB-to-I²C bridge for embedded control buses
The CY7C65211-24LTXIT is a USB-to-I²C bridge IC from Infineon's CapSense® series, translating USB 2.0 protocol to a standard I²C bus for embedded control applications. Housed in a 24-UFQFN Exposed Pad package (4x4 mm, 0.50 mm pitch), the exposed thermal pad on the underside requires a solid ground-plane connection to the PCB for rated thermal performance — the datasheet's recommended footprint includes a 2.6x2.6 mm solder pad with via array.
Supply range and power budget for mixed-voltage designs
Typical supply current is 20 mA during active bridging, with the I²C bus pull-up resistors adding to the total draw — budget 5-10 mA additional per bus for standard 4.7 kΩ pull-ups at 3.3 V.