RT9711CGS

Overview

The RT9711CGS is a high-side power switch featuring an integrated N-channel MOSFET, designed for USB applications. It offers a typical on-resistance of 90mΩ and supports a continuous load current of 0.6A. The device operates within a wide input voltage range of 2.5V to 5.5V. Key electrical characteristics include a typical supply current of 25μA in the on-state and 1μA in the off-state. It incorporates a 1.7V typical under-voltage lockout threshold and provides open-drain fault flag output.

Feature Summary

• Integrated N-channel MOSFET with low on-resistance
• Open-drain fault flag output for status monitoring
• Built-in thermal shutdown and current limiting protection
• Reverse current flow blocking capability

Applications

• Universal Serial Bus (USB) powered applications
• Bus-powered USB devices
• Portable battery-operated equipment
• Hot plug-in applications requiring soft-start

Procurement Notes

Verify the specific suffix GS indicates the SOP-8 package variant when sourcing. Confirm RoHS compliance and lead-free status as per manufacturer specifications. Ensure the selected component matches the required 0.6A current rating for the CG series designation. Cross-reference ordering codes with official Richtek documentation to avoid package mismatches.

Selection Notes

Select this component for designs requiring compact surface-mount solutions with integrated protection features. The SOP-8 package suits applications where board space is limited but slightly larger than SOT-23 options are acceptable. Consider the 0.6A current limit when sizing for load requirements. Verify compatibility with 2.5V to 5.5V supply rails.

Part Context

The RT9711 series comprises high-side power switches compliant with USB specifications. The CG variant specifically denotes the 0.6A current rating version housed in an SOP-8 package. This series is engineered to minimize board space while providing essential protections like UVLO and thermal shutdown for portable electronics.

Replacement Considerations

RT9711DGS: Same 0.6A rating and SOP-8 package; verify if D suffix implies identical pinout and electrical specs.

FAQ

Does the RT9711CGS support reverse current flow?

Yes, the device includes reverse current flow blocking and lacks a body diode.

What is the typical quiescent current in the off state?

The typical supply current is 1μA when the switch is in the off state.