USB3803B-1-GL-TR

Controllers Overview

The USB3803B-1-GL-TR is a USB 2.0 High-Speed Hub Controller manufactured by Microchip Technology, designed for portable applications. It integrates three downstream ports and supports Full-Speed (12 Mb/s), Low-Speed (1.5 Mb/s), and High-Speed (480 Mb/s) data rates. The device operates within a temperature range of -40°C to +85°C and utilizes a 25-pin WLCS package measuring 1.95mm x 1.95mm with a 0.4mm ball pitch. It features internal 3.3V and 1.2V voltage regulators for single-supply operation, alongside external VBAT and 1.8V dual supply options.

Controllers Feature Summary

• Integrated USB 2.0 compatible 3-port hub with dedicated Transaction Translators per port for consistent full-speed throughput.
• Advanced power saving capabilities including 1 µA typical standby current and automatic port shutdown when disabled or unconnected.
• Supports USB Battery Charger Detection compliant with USB-IF Battery Charging 1.1 standards for DCP, CDP, and SDP.
• Includes an integrated bypass switch for low-power single-port operation and configurable serial I2C slave interface for custom descriptors.

Controllers Applications

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

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm temperature grade and package variations. Ensure compatibility with the required reference clock frequency settings via REF_SEL pins. Confirm that the system design accommodates the 25-pin WLCSP footprint and associated decoupling capacitor requirements for the internal regulators.

Controllers Selection Notes

Select this component for designs requiring a compact, low-power USB hub solution in mobile embedded systems. Consider the MultiTRAK technology if maintaining full-speed data throughput across multiple active connections is critical. Evaluate the need for the integrated bypass switch if direct upstream-to-downstream connectivity is required for specific operational modes.

Controllers Part Context

The USB3803 family includes variants such as USB3803C and USB3803Ci, differentiated primarily by operating temperature ranges. The USB3803B-1-GL-TR represents the industrial temperature grade variant (-40°C to +85°C). This controller is optimized for battery-powered devices, minimizing bill of materials through integrated resistors and regulators.

Controllers Replacement Considerations

Public confirmed substitute part numbers include USB3813 and USB3503. Verify pinout compatibility and feature set alignment before substitution.

Controllers FAQ

How does the USB3803 handle full-speed data throughput?

It utilizes MultiTRAK technology, which provides a dedicated Transaction Translator (TT) per port to maintain consistent full-speed data throughput regardless of the number of active downstream connections.

What are the reference clock frequency options?

The device supports external reference clocks of 12 MHz, 19.2 MHz, 26 MHz, or 38.4 MHz, selected via the REF_SEL input pins.

Can the USB3803 operate without an external microcontroller?

Yes, it includes an internal default configuration option that allows operation when a serial I2C host is not available, though an I2C interface is provided for customizable configurations.