MIC5239-1.5YM

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

The MIC5239-1.5YM is a fixed-output low-dropout regulator manufactured by Microchip Technology, providing a stable 1.5V output with a continuous current capacity of 500 mA. It operates within an input voltage range of 2.3V to 30V and features an ultra-low quiescent current of 23 µA at 100 µA load. The device exhibits a typical dropout voltage of 350 mV at full load and maintains ±1.0% initial output accuracy. Packaged in an 8-lead SOIC format, it supports operation across a junction temperature range of -40°C to +125°C.

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

• Ultra-low quiescent current consumption for battery-powered applications
• Capable of delivering continuous 500 mA output current
• Wide operating input voltage range from 2.3V to 30V
• Integrated thermal shutdown, overcurrent protection, and reverse-battery protection

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

• USB power supply circuits
• Keep-alive supplies in notebook and portable personal computers
• Logic supply generation from high-voltage batteries
• Automotive electronics systems

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

Verify the specific package type and marking against the datasheet to ensure compatibility with your PCB footprint. Confirm that the ordering suffix matches the required media type, as standard tubes differ from tape and reel options. Ensure the component meets RoHS compliance requirements for your assembly process.

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

Select this regulator when a wide input voltage range up to 30V is required alongside low standby current. The 8-lead SOIC package offers higher thermal dissipation compared to smaller packages. Ensure the application utilizes ceramic or tantalum capacitors, as the device is stable with minimal capacitance values.

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

This component belongs to the MIC5239 family of low quiescent current LDO regulators. The series includes various fixed output voltages and adjustable versions. The 'M' suffix specifically denotes the 8-lead SOIC package variant, distinguishing it from MSOP-8 and SOT-223 options available within the same product line.

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

MIC5239-1.5YMM (MSOP-8 package)

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

What is the minimum output capacitor requirement for stability?

The MIC5239 is stable with either ceramic or tantalum output capacitors and requires only a 3.3 µF output capacitor for stability.

How does the enable pin function affect quiescent current?

Driving the enable pin low disables the part, reducing the quiescent current to less than 0.1 µA.