USB3503T-I/ML

Controllers Overview

The USB3503T-I/ML is a low-power, USB 2.0 hub controller featuring an HSIC upstream port and three downstream ports. It supports Hi-Speed, Full-Speed, and Low-Speed devices. The device operates on a single supply with internal 3.3V and 1.2V regulators, or dual supplies via VBAT and 1.8V inputs. It includes programmable features such as MultiTRAK technology for dedicated transaction translators per port, PortMap for configurable mapping, and PHYBoost for signal integrity recovery. The component is housed in a 32-pin SQFN package.

Controllers Feature Summary

• Integrated USB 2.0 compatible 3-port hub with HSIC upstream connectivity.
• Advanced power saving features including standby mode and automatic port shutdown.
• MultiTRAK technology providing dedicated transaction translators per port.
• Configurable port mapping, signal swapping, and drive strength adjustment.

Controllers Applications

• Mobile Phones
• Tablet Computers
• Ultra Mobile PCs
• Digital Still Cameras
• Portable Media Players

Controllers Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when sourcing. Confirm the '-I' designation corresponds to the industrial temperature range requirements of your design. Ensure the ML package variant matches your PCB footprint specifications before finalizing orders.

Controllers Selection Notes

Select this component for mobile applications requiring multiple USB connections with minimal BOM. Consider the integrated regulators and ESD protection if external components are to be minimized. Verify that the host system supports HSIC upstream connectivity or provides the necessary reference clock frequencies.

Controllers Part Context

This part belongs to the USB3503 family of high-speed hub controllers optimized for portable electronics. It shares core functionality with variants like the USB3503/ML but differs in packaging and shipping format. The T suffix typically denotes reel packaging suitable for automated assembly processes.

Controllers Replacement Considerations

Direct substitutes include other USB3503 variants such as USB3503/ML or USB3503AI-1-GL-TR, provided the package type and electrical characteristics align with the original design requirements. Verify pin compatibility and software configuration settings when switching between package types.