RT9715DGB

Overview

The RT9715DGB 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 SC-74A (SOT-753) surface-mount package. It includes integrated protection mechanisms such as fixed current limiting, thermal shutdown, reverse current blocking, and under-voltage lockout. The component functions with a non-inverting input interface and provides status flag outputs for fault indication.

Feature Summary

• Integrated high-side N-channel MOSFET for USB power path control
• Built-in fault protection including over-current, thermal shutdown, and reverse current blocking
• Status flag output for monitoring operational state and faults
• Low quiescent current design suitable for portable applications

Applications

• USB port power switching in consumer electronics
• Battery-powered portable devices requiring bus-powered USB interfaces
• Hot-plug application circuits with soft-start capabilities
• System-level power distribution management

Procurement Notes

Verify the specific suffix DGB against official Richtek documentation to confirm pinout compatibility and package dimensions. Confirm RoHS compliance status and lead-free certification requirements for your target assembly process. Check for end-of-life notices or obsolescence warnings prior to finalizing procurement plans. Ensure the supplier provides valid traceability documents and original manufacturer packaging seals.

Selection Notes

Select this component when a compact single-channel USB switch with integrated protection is required. The SC-74A package offers space efficiency for dense PCB layouts. Consider the 2A current rating and 90mΩ on-resistance for voltage drop calculations. Verify that the non-inverting logic interface matches the system control signals. Evaluate the operating temperature range against environmental conditions.

Part Context

The RT9715 series belongs to Richtek's portfolio of power management ICs designed for USB applications. These switches are engineered to meet USB specifications while minimizing board space. The family typically includes variants with different current ratings and packages, such as SOT-23-5 and MSOP-8. The RT9715DGB specifically utilizes the SC-74A footprint, aligning with industry-standard small-outline transistor packages.

Replacement Considerations

Publicly confirmed substitute part numbers for the RT9715DGB were not identified in the provided source material. Cross-referencing with similar devices like the RT9715BGBR requires verification of exact package and electrical parameter alignment. Consult official manufacturer cross-reference lists for validated alternatives.