LQ05041RCS6

Overview

The Littelfuse LQ05041RCS6 is an ultra-low consumption load switch IC designed for power distribution applications. It operates within a supply voltage range of 1.1 V to 5.5 V and supports a maximum output current of 4 A. The device features a maximum on-resistance of 21 mΩ, ensuring efficient power delivery. Key timing parameters include a maximum turn-on time of 450 µs and a maximum idle time of 20 µs. It incorporates true reverse current blocking functionality to prevent backflow. The component is rated for operation between -40°C and +85°C and is housed in a WLCSP-6 package.

Feature Summary

• Integrates true reverse current blocking to prevent reverse flow from load to source
• Ultra-low static current design to minimize parasitic leakage and extend battery life
• Compact chip-level footprint reduces printed circuit board space requirements compared to discrete solutions

Applications

• Wearable electronic devices
• Internet of Things (IoT) hardware
• Solid-state drive storage systems
• Handheld mobile equipment

Procurement Notes

Verify the specific suffix 'RCS6' against the manufacturer's official datasheet to confirm the inclusion of true reverse current blocking features. Ensure the ordering documentation matches the WLCSP-6 package type and the 4A current rating. Cross-reference the RoHS compliance status with the latest regulatory declarations provided by Littelfuse before finalizing procurement orders.

Selection Notes

Select this component when system design requires a single-channel load switch with integrated reverse blocking capabilities. It is suitable for designs prioritizing low quiescent current to maximize battery longevity in portable electronics. Engineers should consider the 4A continuous load capacity and the 21 mΩ on-resistance for thermal management calculations. Verify that the operating voltage range aligns with the system's power rail specifications.

Part Context

This part belongs to the Littelfuse ultra-low consumption load switch family, which includes variants with different current ratings and feature sets such as slew rate control. The LQ05041RCS6 specifically addresses the need for compact, high-efficiency power management in space-constrained consumer and industrial applications. It replaces traditional discrete MOSFET and diode configurations with a fully integrated solution.

Replacement Considerations

Consult the official Littelfuse product selector guide for direct functional equivalents within the same series. Potential substitutes may include other members of the LQ050xx series with compatible pinouts and electrical characteristics. Verify package compatibility and feature parity before substitution.