MIC5225-1.8YM5-TR

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

The MIC5225-1.8YM5-TR is a fixed-output linear low dropout regulator manufactured by Microchip Technology, providing a stable 1.8V output with a maximum current of 150mA. It operates within an input voltage range of 2.3V to 16V and features ultra-low quiescent ground current of 29µA at no load. The device guarantees high output accuracy of ±2.0% over the operating temperature range of -40°C to +125°C. It incorporates comprehensive protection mechanisms including thermal shutdown, current limiting, reverse battery protection, and reverse leakage protection.

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

• Ultra-low quiescent ground current for extended battery life in portable applications
• Integrated reverse battery and reverse leakage protection for robust system operation
• Stable with small ceramic or tantalum capacitors requiring only 1.0µF minimum
• Active-high enable pin allows zero current consumption during shutdown

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

• Cellular phones and mobile communication devices
• Keep-alive supply circuits in notebook and portable computers
• Battery-powered equipment utilizing single-cell Li-Ion inputs
• Automotive electronics systems
• High-efficiency linear power supplies

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

Verify that the component matches the exact part number MIC5225-1.8YM5-TR to ensure correct 1.8V fixed output configuration. Confirm the package type is SOT-23-5 and check for lead-free compliance. Ensure the supplier provides valid traceability documentation. Cross-reference the manufacturer designation as Micrel/Microchip Technology to avoid counterfeit components.

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

Select this regulator when a wide input voltage range up to 16V is required alongside minimal ground current consumption. It is suitable for designs needing high output accuracy of ±2.0% across extreme temperatures. Consider its capability to remain stable under no-load conditions for memory retention tasks. Evaluate thermal dissipation requirements based on the junction-to-ambient resistance of the SOT-23-5 package.

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

This component belongs to the MIC5225 family of ultra-low quiescent current regulators. The series offers both fixed and adjustable output voltage options within the same IttyBitty SOT23-5 package. Other variants provide different fixed voltages such as 2.5V, 3.0V, and 3.3V, or an adjustable version using external resistors. All members share the core architecture featuring µCap stability and high input voltage tolerance.

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

MIC5225-2.5YM5-TR

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

What is the minimum output capacitor value required for stability?

The MIC5225 requires a minimum output capacitance of 1.0µF to maintain stability. It is optimized for use with low-ESR ceramic chip capacitors.

How does the enable pin function affect power consumption?

Forcing the enable pin logic low disables the regulator and places it into a shutdown state where the ground current drops to nearly zero.

Does the device support reverse polarity connections?

Yes, the MIC5225 includes built-in reverse battery protection and reverse leakage protection to safeguard against incorrect input connections.