LS0504EDD12

Overview

The Littelfuse LS0504EDD12 is a single-channel load switch IC designed for power distribution applications. It operates within an input voltage range of 1.8 V to 5.5 V, with a maximum rating of 6 V. The device supports a continuous output current of 4 A and features a low on-resistance (R_ON) of 26 mΩ. It incorporates comprehensive protection mechanisms including overcurrent, overvoltage, undervoltage lockout (UVLO), and overtemperature protection. The component is housed in a compact DFN1.6×1.2_4L package.

Feature Summary

• Integrates complete fault protection including overcurrent, overvoltage, undervoltage lockout, and overtemperature safeguards.
• Features a low on-resistance design to minimize conduction losses during operation.
• Allows programmable input undervoltage lockout thresholds via an external resistor divider network.
• Includes a built-in discharge resistor for rapid output voltage decay upon shutdown.

Applications

• Power distribution in portable electronic devices
• Load switching in automotive infotainment systems
• Power management in industrial control equipment

Procurement Notes

Verify the specific ordering suffix and tape-and-reel specifications against the manufacturer's latest datasheet before procurement. Confirm that the DFN1.6×1.2_4L package dimensions align with your PCB footprint requirements. Ensure compatibility with the intended input voltage range and thermal management strategy for the target application environment.

Selection Notes

Select this component when a compact, high-current load switch with integrated protection is required. The 4 A continuous current capability and low R_ON make it suitable for efficient power routing. Consider the programmable UVLO feature if precise power sequencing or threshold monitoring is necessary for the system design.

Part Context

This part belongs to the LS0504 series of eFuse and load switch ICs from Littelfuse. These components are engineered to provide robust power distribution solutions with minimal board space consumption. The series emphasizes reliability through integrated circuit protection features, catering to modern electronics that demand high efficiency and safety standards.

Replacement Considerations

Consult official Littelfuse documentation for verified cross-reference part numbers. Ensure any substitute maintains the same pinout, voltage ratings, and current handling capabilities to guarantee functional equivalence without redesigning the host circuitry.

FAQ

How is the undervoltage lockout (UVLO) threshold configured?

The UVLO threshold is programmable using an external resistor divider network connected to the enable pin.

What protection features are included in the LS0504EDD12?

The device includes overcurrent protection, overvoltage protection, undervoltage lockout, and overtemperature protection.