RT9712CGS

Overview

The RT9712CGS is a dual high-side power distribution switch manufactured by Richtek Technology Corporation. It integrates two N-channel MOSFETs with a typical on-resistance of 90 milliohms each, designed for heavy capacitive loads and short-circuit protection. The device operates within a supply voltage range of 2.7V to 5.5V and utilizes an internal charge pump for gate drive control without external components. It features fixed current limiting, over-temperature protection, reverse blocking, and under-voltage lockout. The component is housed in an 8-SOP package and supports non-inverting input logic.

Feature Summary

• Integrates two independent high-side N-MOSFET switches with low on-resistance for efficient power distribution.
• Includes an internal charge pump to control rise and fall times, minimizing current surges during switching.
• Provides comprehensive fault protection including fixed current limit, thermal shutdown, reverse blocking, and UVLO.

Applications

• Power distribution systems requiring multiple switches in a single package
• Heavy capacitive load applications
• Short circuit protection circuits

Procurement Notes

Verify the specific suffix 'CGS' against official datasheets to confirm pinout and packaging details, as suffixes often denote tape-and-reel quantities or specific temperature grades. Ensure compatibility with the 2.7V to 5.5V operating range. Confirm RoHS compliance status through the manufacturer's declaration. Cross-reference ordering information with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when dual high-side switching is required in a compact footprint. The 90mΩ resistance offers a balance between conduction loss and cost. The internal charge pump simplifies design by eliminating external bootstrap components. Consider the 8-SOP package constraints for thermal management in high-current scenarios. Verify that the non-inverting logic aligns with the system control interface.

Part Context

The RT9712 series belongs to Richtek's family of high-side power switches designed for USB and general power distribution applications. It complements similar products like the RT9711, which offers lower on-resistance but may differ in current ratings or package options. This series addresses the need for integrated protection and control in space-constrained electronic designs.

Replacement Considerations

The RT9711DGS is a documented related part number within the same product family. Verify electrical parameters such as on-resistance and current limits before substitution. Ensure pin compatibility and package dimensions match the existing PCB layout.

FAQ

Does the RT9712CGS require external components for the charge pump?

No, the device incorporates an internal charge pump that operates with a supply voltage as low as 2.7V and requires no external components.

What protection features are included in the RT9712CGS?

The device includes fixed current limiting, over-temperature protection, reverse blocking capability, and under-voltage lockout (UVLO).