RT9715CGBR

Overview

The RT9715CGBR is a single N-channel high-side power switch IC designed for USB applications, manufactured by Richtek USA Inc. It features a typical on-resistance of 90mΩ and supports a continuous load current of 1.1A. The device operates within a voltage range of 2.7V to 5.5V without requiring an external supply voltage. Key protection mechanisms include fixed over-current protection, thermal shutdown with foldback, reverse current blocking, and under-voltage lockout (UVLO). It provides a deglitched fault flag output and is housed in a SOT-23-5R package.

Feature Summary

• Integrates a low on-resistance N-MOSFET switch optimized for USB peripheral power distribution.
• Provides comprehensive fault protection including over-current, thermal shutdown with foldback, and reverse current blocking.
• Outputs a deglitched status flag to indicate fault conditions without requiring additional components.

Applications

• USB peripheral power switching
• Notebook PC power management
• Portable battery-operated equipment

Procurement Notes

Verify the specific suffix 'GBR' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Confirm end-of-life status and lead times through authorized distributors, as availability may be limited. Ensure compatibility with existing PCB footprints for the SOT-23-5R package before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring a compact, cost-effective high-side switch with integrated fault reporting. The 1.1A current rating and 90mΩ resistance make it suitable for standard USB loads. Consider the operating temperature range and UVLO threshold when designing for varying input voltage conditions.

Part Context

The RT9715 series comprises single N-channel high-side power switches intended for USB applications. This family offers various current ratings and packages, providing designers with options for different power and space constraints while maintaining consistent protection features and low on-resistance characteristics.

Replacement Considerations

Check for direct pin-to-pin replacements within the RT9715 series or other manufacturers' USB switches with similar 90mΩ Rds(on) and 1.1A current ratings. Verify that alternative parts support the same SOT-23-5R package and fault flag functionality.

FAQ

Does the RT9715CGBR support reverse current flow?

Yes, the device includes reverse current blocking capability to prevent backflow from the load to the source.

What is the typical quiescent current of the RT9715CGBR?

The typical supply current is 50µA during operation.