MIC49200-1.8WR-TR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The MIC49200-1.8WR-TR is a low-dropout linear voltage regulator manufactured by Microchip Technology, designed for applications requiring stable power delivery from low input voltages. This specific variant provides a fixed positive output of 1.8V with a maximum continuous output current capability of 2A. It utilizes the SPAK-5 surface-mount package to facilitate efficient thermal management and compact board layout. The device features fast transient response characteristics and maintains stability using only ultra-small capacitance (µCap) output capacitors, significantly reducing the required external component count. It operates reliably within an extended temperature range from -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides a fixed 1.8V regulated output suitable for powering sensitive digital logic and microcontrollers.
• Delivers up to 2A of continuous load current while maintaining regulation under varying line and load conditions.
• Ensures stability with minimal external components by supporting ultra-small capacitance output capacitors.
• Incorporates internal protection mechanisms including overcurrent limiting and thermal shutdown to safeguard the device.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable battery-powered consumer electronics requiring efficient step-down conversion.
• Embedded systems and microcontroller units needing clean, stable power rails.
• Industrial control modules operating in harsh environmental conditions.
• Communication equipment interfaces requiring low-noise voltage regulation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the exact part number suffix against official Microchip documentation to confirm the fixed 1.8V output configuration, as the base MIC49200 series includes adjustable variants. Ensure compatibility with your PCB footprint for the SPAK-5 package. Confirm moisture sensitivity level handling procedures during assembly to prevent damage. Cross-reference datasheet revision dates to ensure all electrical specifications match your design requirements.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 1.8V rail is required with high current capacity in a small form factor. It is preferable to adjustable versions if the system design does not require variable output settings, simplifying the bill of materials. Consider the SPAK-5 package for its superior thermal dissipation compared to smaller SOT packages. Evaluate input voltage ranges to ensure sufficient headroom for the specified dropout voltage at full load.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the MIC49200 family of low-voltage LDO regulators from Microchip Technology. The family is characterized by its ability to operate with very low input-to-output differentials and its unique µCap stability feature. These regulators are engineered for modern portable and industrial applications where space constraints and efficiency are critical design drivers.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Consult Microchip's official cross-reference tools or datasheets for verified equivalent parts. Potential substitutes may include other fixed 1.8V, 2A LDOs from the same manufacturer or compatible competitors, provided pinouts and electrical parameters align. Verify that any replacement supports µCap stability if minimizing external components is a priority.