RT9715BGBG

Overview

The RT9715BGBG is a single-channel N-channel USB power switch manufactured by Richtek USA Inc. It operates within a load voltage range of 2.7V to 5.5V and supports a maximum output current of 2A. The device features a typical on-resistance of 90 milliohms and utilizes an open-drain fault flag interface. Integrated protection mechanisms include fixed current limiting, thermal shutdown, reverse current blocking, and under-voltage lockout (UVLO). Designed for surface-mount installation in SOT-23-5R packages, it functions without external supply voltage requirements.

Feature Summary

• Integrated N-channel MOSFET with low on-resistance for efficient power delivery
• Comprehensive fault protection including over-current, thermal, and reverse current safeguards
• Open-drain status flag output for real-time fault monitoring
• Soft-start functionality to manage inrush currents during hot-plug events

Applications

• Self-powered Universal Serial Bus (USB) peripheral devices
• Bus-powered USB hub ports and connectivity interfaces
• Portable battery-operated equipment requiring power management
• High-side switching applications for USB host controllers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the product's end-of-life status. Confirm package integrity and pin alignment against the SOT-23-5R specification before integration. Ensure that design specifications align with the documented electrical limits, particularly regarding the 2A continuous current rating and operating temperature range. Request updated documentation from the supplier to confirm final revision details and compliance certifications prior to procurement.

Selection Notes

Select this component for designs requiring robust USB port protection with minimal board space utilization. The integrated charge pump eliminates the need for external biasing components, simplifying schematic design. Consider the 90mΩ on-resistance impact on voltage drop when designing for high-current loads near the 2A limit. Evaluate the thermal performance characteristics relative to the expected ambient conditions and PCB copper area available for heat dissipation.

Part Context

The RT9715 series represents Richtek's solution for compact USB power distribution. This specific model belongs to the family of single-channel switches optimized for portable electronics. It complements other Richtek PMIC offerings by providing dedicated port protection. The device addresses the industry demand for integrated solutions that combine switching capability with diagnostic feedback in small form factors.

Replacement Considerations

The RT9715BGBR is a verified substitute part number within the same series, offering identical functional specifications. Verify that the suffix change does not alter the package type or electrical parameters. Cross-reference pinouts and thermal characteristics to ensure mechanical compatibility during replacement.