MIC94042YFL-TR

Overview

The MIC94042YFL-TR is a high-side power load distribution switch manufactured by Microchip Technology. It operates within an input voltage range of 1.7V to 5.5V and supports a continuous output current of 3A. The device features a maximum on-resistance of 55mΩ, with a typical value of 28mΩ. Key timing specifications include a maximum turn-on time of 185µs and a maximum turn-off time of 200ns. It is housed in a compact MLF-4 package measuring 1.2x1.2mm and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• High-side load switching capability with active-high control logic
• Integrated slew rate control to minimize inrush current during turn-on
• Compact MLF-4 surface-mount package for space-constrained designs
• Extended industrial temperature rating up to +125°C

Applications

• Power distribution in portable electronic devices
• Load switching in embedded systems and microcontroller boards
• Battery-powered equipment requiring efficient power management
• Industrial control modules operating in harsh environments

Procurement Notes

Verify the specific suffix YFL corresponds to the MLF-4 package and tape-and-reel quantity when ordering. Confirm RoHS compliance status through official Microchip documentation or authorized distributor certificates. Ensure ESD handling procedures are followed due to moisture sensitivity classification. Cross-reference datasheet revision dates to guarantee parameter accuracy against design requirements.

Selection Notes

Select this component when a single-channel high-side switch with 3A capacity is required. The low on-resistance minimizes power dissipation compared to higher resistance alternatives. Consider the 185µs turn-on time for applications sensitive to inrush currents. The wide operating voltage range accommodates various supply rails from 1.7V to 5.5V. Evaluate thermal performance based on PCB copper area and ambient conditions.

Part Context

This part belongs to the MIC9404x family of high-side load switches from Microchip. It shares functional similarities with the MIC94041 but differs in packaging and specific electrical characteristics. The MIC94042 variant utilizes the MLF-4 package, whereas other family members may use UDFN-4. These devices are designed for general-purpose power distribution tasks in modern electronics.

Replacement Considerations

Direct substitutes include the MIC94041YFL-TR, though package differences must be verified. Check pinout compatibility and electrical parameters such as on-resistance and current ratings before substitution. Ensure thermal characteristics match the original design constraints.