MIC5209YM

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

The MIC5209YM is a 500 mA low-dropout linear voltage regulator in an 8-pin SOIC package. It provides adjustable output voltages from 1.8V to 15V with better than 1% accuracy. The device features a maximum dropout voltage of 600 mV at full load and includes enable/shutdown functionality for near-zero shutdown current. Electrical characteristics include a typical ground pin current of 170 µA at 500 mA output and a power supply rejection ratio of 75 dB at 120 Hz. Operating junction temperature ranges from -40°C to +125°C.

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

• Adjustable output voltage range from 1.8V to 15V with tight line and load regulation.
• Ultra-low-noise capability via optional reference bypass capacitor on the BYP pin.
• Integrated reversed-battery protection, current limiting, and overtemperature shutdown.
• Enable/shutdown control input compatible with CMOS logic levels.

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

• Pentium II Slot 1 and Slot 2 support circuits
• Laptop, notebook, and palmtop computers
• Cellular telephones
• Consumer and personal electronics
• SMPS post-regulator and DC/DC modules

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

Verify the specific part number suffix against the manufacturer datasheet to confirm package type and electrical specifications. Ensure that the ordering information matches the required output configuration and thermal performance needs. Cross-reference the component marking with official documentation to validate authenticity and production batch details before integration into design projects.

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

Select this component when an adjustable output voltage is required within the 1.8V to 15V range. Consider the SOIC-8 package for applications needing a balance between thermal dissipation and board space. Evaluate the need for the enable pin if system power management requires active shutdown capabilities. Verify that the external resistor network for voltage adjustment meets the impedance requirements for optimal stability.

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

The MIC5209 belongs to Microchip's family of low-dropout regulators designed for battery-powered devices. It offers high efficiency with minimal ground current consumption. The YM variant specifically denotes the adjustable version housed in an 8-pin SOIC package, distinguishing it from fixed-output or alternative package options like SOT-223 or DFN.

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

MIC5209-3.0YM-TR

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

How does the MIC5209YM achieve ultra-low-noise performance?

By connecting an external 470 pF capacitor between the BYP pin and ground, which quiets the internal voltage reference.

What is the function of the EN pin on the MIC5209YM?

The EN pin serves as a CMOS-compatible enable/shutdown control; driving it high enables the regulator, while driving it low initiates shutdown.