RT9711AGF

Overview

The RT9711AGF is a high-side power switch featuring an integrated N-channel MOSFET, designed for Universal Serial Bus (USB) applications. It offers a typical on-resistance of 80mΩ and supports continuous load currents of 1.5A or 0.6A depending on the series variant. The device operates within a wide input voltage range of 2.5V to 5.5V. Key electrical parameters include a typical quiescent current of 25μA in the on state and 1μA in the off state. It incorporates soft-start functionality to limit inrush current during hot plug-in events. Protection features include under-voltage lockout at 1.7V typical, fixed current limiting, and thermal shutdown.

Feature Summary

• Compliant with USB specifications for portable and bus-powered applications
• Integrated N-MOSFET with low on-resistance to minimize voltage drop
• Open-drain fault flag output for system monitoring
• Reverse current flow blocking capability without body diode

Applications

• Bus-powered USB peripheral devices
• Portable battery-operated equipment
• Hot plug-in USB hub circuits
• USB port protection modules

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm the exact package type and lead plating system. Ensure the selected variant matches the required continuous load current rating for the target application. Confirm RoHS compliance status and check for any recent product change notifications or end-of-life announcements prior to finalizing procurement orders.

Selection Notes

Select this component when designing USB interfaces requiring low on-resistance and compact footprint. The choice between 1.5A and 0.6A variants depends on the maximum load current requirements. Consider the SOP-8 package for broader thermal dissipation needs compared to smaller packages. Evaluate the need for the open-drain flag output for advanced fault detection in complex systems.

Part Context

The RT9711AGF belongs to the Richtek RT9711 series of high-side power switches. This family is engineered specifically for USB applications, offering robust protection and low power consumption. The AGF suffix typically denotes a specific package configuration and material composition within the series, aligning with industry standards for surface-mount assembly.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative high-side switches from other manufacturers.