USB3750A-1-A4-TR

Controllers Overview

The USB3750A-1-A4-TR is a USB protection and battery charger detection IC from Microchip Technology. It integrates VBUS over-voltage protection, ESD protection, and High-Speed USB multiplexing capabilities. The device supports USB Battery Charging Specification Revision 1.2, detecting SDP, CDP, DCP, and SE1 chargers. It features dead battery provision support allowing 100 mA trickle charging via SDP. Operating voltage ranges from 2 V to 9 V with an operating temperature range of -40°C to +85°C. The unit is housed in a 16-pin QFN package.

Controllers Feature Summary

• Integrates VBUS over-voltage protection and high-speed USB mux for signal routing
• Provides IEC 61000-4-2 level 4 ESD protection without external components
• Supports automatic USB-IF Battery Charger Detection (Rev 1.2) including DCP, CDP, and SDP
• Enables dead battery trickle charging up to 100 mA from Standard Downstream Ports

Controllers Applications

• Mobile devices requiring robust USB port protection
• Portable electronics needing fast charging ecosystem support
• USB hubs and docks with multiplexing requirements

Controllers Procurement Notes

Verify the specific suffix 'A4' against the manufacturer's latest documentation to confirm pinout and electrical characteristics. Ensure the ordering quantity aligns with the factory reel packaging specifications provided by authorized distributors. Confirm RoHS compliance status directly with the supplier prior to finalizing procurement orders.

Controllers Selection Notes

Select this component when High-Speed USB multiplexing is required alongside battery charger detection. The USB3750 variant includes the HS switch, whereas the USB3751 does not. Verify that the system design accommodates the 16-pin QFN thermal pad grounding requirements and I2C pull-up resistor configurations for proper operation.

Controllers Part Context

This part belongs to the USB375x family of USB protection ICs. It combines discrete protection functions into a single solution to reduce bill of materials and PCB area. The device is designed for mobile applications where space and power efficiency are critical constraints.

Controllers Replacement Considerations

Check for direct substitutes within the USB375x family, such as the USB3751A-1-A4-TR if the High-Speed USB mux feature is not required. Verify pin compatibility and register mapping before substituting.