MP62551DJ-LF-Z

Overview

The MP62551DJ-LF-Z is a single-channel power distribution switch manufactured by Monolithic Power Systems. It operates with an active-high logic interface and features an N-channel output configuration housed in a TSOT-23-6 package. The device supports a supply voltage range of 2.5 V to 5.5 V and delivers a maximum output current of 1.5 A. It includes a current limit of 1.7 A and a maximum on-resistance of 135 mOhms. Key timing parameters include a maximum turn-on time of 3 ms and a maximum idle time of 30 ms. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates adjustable current limiting, overtemperature protection, and under-voltage lockout for comprehensive circuit safeguarding.
• Features controlled slew rate functionality to minimize inrush current and electromagnetic interference during switching events.
• Includes a status flag output to provide real-time feedback regarding the operational state or fault conditions of the switch.

Applications

• Peripheral power distribution in portable consumer electronics
• Load switching for USB-powered devices
• Power management in industrial control systems

Procurement Notes

Verify the specific suffix LF-Z indicates lead-free compliance and RoHS adherence before procurement. Confirm the TSOT-23-6 package dimensions match your PCB footprint requirements. Ensure the active-high logic level aligns with your system's control signals. Cross-reference the datasheet for thermal dissipation limits relative to your expected load current and ambient temperature conditions.

Selection Notes

Select this component when a single-channel high-side switch with integrated protection is required. The 1.5 A continuous current rating suits moderate load applications. The low on-resistance helps minimize power loss. Consider the TSOT-23-6 package size for space-constrained designs. Verify that the 2.5 V minimum operating voltage matches your system's rail availability.

Part Context

This part belongs to the MP62551 series of power switches from Monolithic Power Systems. It shares functional similarities with the MP62550 but differs in logic polarity and packaging options. The series is designed for efficient power distribution in compact electronic systems requiring reliable load management and protection features.

Replacement Considerations

The MP62550DJ-LF-Z is a related variant within the same family, though it utilizes active-low logic. Direct substitution requires verifying logic compatibility. Other MPS power switches may serve as alternatives if pinouts and electrical ratings are compatible.

FAQ

What is the logic polarity of the MP62551DJ-LF-Z?

The MP62551DJ-LF-Z uses an active-high logic interface, meaning the switch turns on when the enable pin is driven high.

Does the MP62551DJ-LF-Z include a status indicator?

Yes, the device includes a status flag output that indicates the operational state or fault conditions of the power switch.