The Microchip USB2422T-I/MJ: A Compact Powerhouse for USB Hub Integration

In the realm of modern electronics, efficient and reliable USB connectivity expansion is a fundamental requirement. The Microchip USB2422T-I/MJ stands out as a highly integrated, low-power, 2-port USB 2.0 Hi-Speed hub controller designed to meet this need with exceptional performance and design flexibility. This device serves as a critical component, seamlessly extending a single USB host connection into two downstream ports, fully compliant with the USB 2.0 specification.

Engineered for versatility, the USB2422T supports both downstream battery charging applications using the USB Battery Charging Revision 1.2 specification. This feature is crucial for modern devices, allowing for faster charging of smartphones, tablets, and other portable electronics connected to the hub. Its multi-translating hub architecture ensures that each downstream port operates independently, preventing a single non-compliant device from disrupting the entire bus.

A key advantage of this controller is its minimal external component count. With integrated termination resistors and all necessary USB serial resistors on-chip, the USB2422T significantly simplifies PCB layout, reduces the overall Bill of Materials (BOM) cost, and minimizes the physical footprint of the design. This makes it an ideal choice for space-constrained applications such as embedded systems, desktop peripherals, and laptop docking stations.

Furthermore, the hub offers advanced configuration options through a single serial I²C EEPROM interface. This allows OEMs to customize critical parameters like Vendor ID (VID), Product ID (PID), and port status without altering the base hardware design. The inclusion of individual or ganged power switching and status LEDs for each downstream port provides both robust power management and clear user feedback.

Housed in a compact 36-pin MLF® (QFN) package, the USB2422T-I/MJ is built for durability and efficient manufacturing. Its industrial temperature range (-40°C to +85°C) ensures reliable operation in a wide array of environments, from consumer products to more demanding industrial applications.

ICGOODFIND: The Microchip USB2422T-I/MJ is an optimal solution for designers seeking a cost-effective, feature-rich, and space-efficient USB hub controller. Its integrated features for battery charging, low power operation, and design simplicity make it a superior choice for accelerating product development and enhancing end-user connectivity experience.

Keywords: USB 2.0 Hub Controller, Battery Charging (BC1.2), Low Power, I²C Configuration, Hi-Speed USB