MIC5159-3.0BM6-TR

Overview

The MIC5159-3.0BM6-TR is a precision-voltage regulator controller manufactured by Microchip Technology, housed in an SOT-23-6 package. It operates with an input voltage range of 1.65V to 5.5V and provides a fixed output voltage of 3.0V. The device features ±1.0% initial output tolerance at 25°C and supports operation across a junction temperature range of –40°C to +125°C. Designed for use with external P-Channel MOSFETs, it enables the construction of low-dropout regulators capable of driving high currents.

Feature Summary

• Logic-controlled shutdown via active-high enable pin
• Programmable current limit protection using external sense resistor
• Stable with ceramic output capacitors due to µCap design

Applications

• Ultra-high current, ultra-low dropout voltage regulators
• Low-voltage distributed power systems
• Fixed telecom equipment power supplies
• Multimedia and PC power supplies
• Battery chargers

Procurement Notes

Verify that the component matches the specific fixed 3.0V output variant, as the MIC5159 family includes adjustable versions. Confirm the SOT-23-6 package marking corresponds to the LZ30 identifier. Ensure the supply chain source provides documentation confirming compliance with RoHS3 specifications and REACH status prior to integration into production designs.

Selection Notes

This controller requires an external P-Channel MOSFET to function as a complete regulator. Selection of the MOSFET must account for input voltage breakdown, gate threshold requirements, and thermal dissipation capabilities based on the desired output current. Designers must calculate the appropriate current sense resistor value to set the desired current limit threshold according to the datasheet formulas.

Part Context

The MIC5159 series serves as a two-chip solution for creating flexible linear power supplies. By separating the control logic from the pass element, designers can optimize thermal performance and current handling independently. This architecture allows for high-efficiency regulation in space-constrained applications where standard monolithic LDOs may not meet current or dropout requirements.

Replacement Considerations

MIC5159YM6-TR