MIC2033-05AYMT-T5

Overview

The MIC2033-05AYMT-T5 is a high-side power distribution switch manufactured by Microchip Technology. It features a fixed current limit of 500 mA and an operating input voltage range from 2.5 V to 5.5 V. The device provides ±5% current limit accuracy and includes thermal shutdown protection. It utilizes a 6-pin SOT-23 package with a typical on-resistance of 75 mΩ at 5 V. The component supports logic-controlled enable inputs and offers an open-drain fault status output flag.

Feature Summary

• High-accuracy fixed current limiting for reliable power distribution
• Integrated thermal shutdown and undervoltage lockout protection
• Logic-controlled enable with active-high or active-low options
• Open-drain fault status output with built-in delay

Applications

• Portable consumer electronics power management
• Industrial control system load switching
• Automotive infotainment and sensor power distribution
• Telecommunications equipment peripheral power control

Procurement Notes

Verify the specific suffix 'A' against official Microchip documentation to confirm pinout configuration and electrical tolerances, as variations exist within the MIC2033 family. Ensure the 'YMT' package designation matches the required 6-pin SOT-23 footprint for PCB layout compatibility. Cross-reference the '-T5' tape-and-reel specification with manufacturing data sheets to confirm packaging standards and handling requirements during assembly.

Selection Notes

Select this component when precise current limiting is required for high-side switching applications. The 500 mA limit suits low-power peripheral loads. Consider the 2.5 V to 5.5 V input range for compatibility with standard logic levels. The inclusion of soft-start via external capacitor helps manage inrush currents for capacitive loads. Evaluate the thermal performance relative to ambient conditions given the junction temperature range.

Part Context

This part belongs to the MIC2033 series of high-side power switches designed for system reliability. It shares architectural similarities with the MIC2005 but offers improved current limit accuracy. The series is characterized by low quiescent current and fast response times to short-circuit conditions. It serves as a robust alternative to discrete MOSFET solutions in space-constrained designs requiring integrated protection features.

Replacement Considerations

The MIC2033-05BYMT-T5 is a pin-compatible alternative within the same family. Verify that the current limit tolerance and enable logic polarity match the design requirements before substitution. Other variants in the series offer different current limits (0.8 A, 1 A, 1.2 A) which may require re-evaluation of load protection thresholds.

FAQ

How is the soft-start function implemented?

The soft-start circuit is adjustable via an external capacitor connected to the designated pin, which minimizes inrush current during turn-on.

What triggers the fault status output?

The open-drain fault status flag asserts low during over-current conditions or thermal shutdown events, providing system-level error indication.