TPS259841RZJR

Current Regulation/Management Overview

The TPS259841RZJR is a stackable electronic fuse (eFuse) from Texas Instruments, designed for high-current power distribution. It operates within an input voltage range of 4.5 V to 16 V and supports up to 70 A of continuous output current. The device features a typical on-resistance of 0.8 mΩ, minimizing conduction losses in power paths. It integrates accurate and fast current monitoring capabilities, enabling precise load protection and system management. Packaged in a 32-pin WQFN-FCRLF (5x5 mm) format, it supports junction temperatures from -40°C to 125°C.

Current Regulation/Management Feature Summary

• Stackable architecture allows multiple devices to be connected in parallel for increased current capacity without complex external control circuitry.
• Integrated accurate and fast current monitor provides real-time feedback for load management and fault detection.
• High-side switch configuration with low on-resistance ensures efficient power delivery and minimal thermal impact.

Current Regulation/Management Applications

• High-density server and storage backplanes requiring redundant power paths
• Industrial automation systems needing robust overcurrent protection
• Telecommunications infrastructure equipment with hot-swap requirements

Current Regulation/Management Procurement Notes

Verify the complete part number including suffix RZJR to ensure correct package type and tape-and-reel configuration. Confirm that the design supports the specified 4.5 V to 16 V input range and 70 A current rating. Ensure PCB layout accommodates the WQFN-FCRLF footprint with adequate thermal vias for heat dissipation. Check for any specific ordering restrictions or environmental compliance documentation required by your region.

Current Regulation/Management Selection Notes

Select this component when parallel eFuse operation is required for currents exceeding single-device limits. The stackable feature simplifies board layout compared to non-stackable alternatives. Consider the 0.8 mΩ on-resistance for efficiency calculations under full load. Verify compatibility with upstream power supplies capable of delivering 70 A continuously. Evaluate thermal management needs given the high current density in the 5x5 mm package.

Current Regulation/Management Part Context

This device belongs to the TPS25984x family of stackable eFuses from Texas Instruments. The family offers various current ratings and voltage ranges, with the TPS259841RZJR representing the 70 A, 16 V variant. It shares core functionalities like current monitoring and stackability with other members but differs in electrical specifications and pin configurations suitable for different power levels.

Current Regulation/Management Replacement Considerations

Direct substitutes are not explicitly listed in public datasheets for this exact stackable 70 A variant. Non-stackable eFuses may require redesigning the power distribution network. Verify if alternative TI models like TPS259840 or TPS259842 meet the specific current and voltage requirements while maintaining stackability if needed.

Current Regulation/Management FAQ

What does 'stackable' mean for this eFuse?

Stackable means multiple TPS259841RZJR devices can be connected in parallel directly, sharing the same enable and fault signals, to increase total current capacity without additional control logic.

How is current monitoring implemented?

The device includes an integrated accurate and fast current monitor that provides a signal proportional to the output current, allowing for precise load regulation and fault detection.