RT9731BZQW(2)

Overview

The RT9731BZQW(2) is a dual-channel precision adjustable current-limited power switch manufactured by Richtek. It operates within a supply voltage range of 2.5 V to 5.5 V and provides two independent output channels. The device features a maximum on-resistance of 44 mΩ and supports a current limit of 2.8 A per channel. It is designed for surface-mount installation in WDFN-10 packages and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Dual-channel architecture with precision adjustable current limiting
• Low on-resistance for efficient power distribution
• Integrated protection mechanisms for load safety

Applications

• Power distribution units
• Peripheral interface circuits
• Load switching applications

Procurement Notes

Verify the specific suffix ZQW(2) against official datasheets to confirm pinout and thermal pad configurations. Ensure compatibility with the target PCB footprint and soldering profile. Confirm RoHS compliance status through manufacturer declarations before integration into regulated assemblies.

Selection Notes

Select this component when dual isolated outputs with adjustable current limits are required within a 5.5 V system. Evaluate the 44 mΩ on-resistance against thermal dissipation requirements at the expected load current. Compare package dimensions against available board space constraints.

Part Context

This part belongs to Richtek's power switch IC portfolio, which focuses on distributed power management solutions. These devices typically integrate protection features such as over-current and thermal shutdown to safeguard downstream loads in portable and industrial electronics.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Verify electrical parameters and pin compatibility before replacing.