RT9715BGS

Overview

The RT9715BGS is a single N-channel high-side power switch IC designed for USB applications. It features a typical on-resistance of 90mΩ and supports a continuous output current of 2A. The device operates within a load voltage range of 2.7V to 5.5V without requiring a separate supply voltage. Key protection mechanisms include fixed over-current limiting, thermal shutdown with foldback, reverse current blocking, and under-voltage lockout. It provides an open-drain fault flag output and utilizes a SOT-23-5 package.

Feature Summary

• Integrates a low on-resistance N-MOSFET for efficient power switching
• Provides comprehensive fault protection including over-current and thermal shutdown
• Features an open-drain status flag for real-time monitoring
• Blocks reverse current flow to prevent back-powering

Applications

• USB peripheral devices
• Notebook PC power distribution
• Portable battery-operated equipment

Procurement Notes

Verify component authenticity through authorized distributors or the manufacturer directly. Confirm RoHS compliance and check for end-of-life notices, as availability may be limited. Ensure the specific suffix matches required packaging and temperature ratings before ordering.

Selection Notes

Select this component for cost-effective high-side switching in low-voltage USB systems. Consider the 2A current limit and 90mΩ resistance when designing for thermal management. Verify that the SOT-23-5 package fits the board space constraints and that the operating voltage range aligns with the system bus requirements.

Part Context

This part belongs to the RT9715 series of high-side power switches from Richtek Technology Corporation. The series offers various current ratings and packages to suit different USB application needs. The B variant specifically denotes the 2A current capability within this family of low-voltage power management ICs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.