MIC5253-3.0YC5-TR

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

The MIC5253-3.0YC5-TR is a fixed-output low-dropout linear regulator manufactured by Microchip Technology, providing a stable 3.0V output with a continuous current capacity of 100mA and peak capability of 150mA. It operates within an input voltage range of 2.7V to 5.5V and features ultra-low output noise of 30 µV(rms). The device incorporates a dedicated bypass pin for further noise reduction and utilizes a Teeny SC-70-5 package.

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

• Ultra-low output noise optimized for RF applications
• TTL-logic-compatible enable pin for active shutdown control
• Stability ensured with low-ESR ceramic capacitors
• Integrated thermal shutdown and current limit protection

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

• Cellular phones and pagers
• Battery-powered equipment
• Laptop, notebook, and palmtop computers
• Consumer and personal electronics

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

Verify the specific ordering suffix 'YC5' against official documentation to confirm the Teeny SC-70-5 package configuration and lead-free status. Ensure compatibility with low-ESR ceramic output capacitors as specified in the datasheet requirements for stability.

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

Select this component when ultra-low noise performance is critical for sensitive analog or RF circuits. The inclusion of a bypass pin allows for additional noise filtering beyond standard operation. Verify that the required output current does not exceed the 100mA continuous rating under maximum ambient temperature conditions.

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

This part belongs to the MIC5253 series of 100mA Low Noise µCap Teeny LDO regulators originally developed by Micrel, now part of Microchip Technology. The series is designed specifically for handheld and battery-powered devices requiring efficient power management in minimal board space.

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

Direct substitutes include other MIC5253 variants with different output voltages (e.g., MIC5253-3.3YC5-TR) sharing the same package and electrical characteristics. Cross-vendor replacements require matching the 100mA current rating, 30 µV(rms) noise specification, and SC-70-5 footprint.

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

How does the BYP pin affect the regulator's performance?

Connecting a capacitor from the BYP pin to ground bypasses the internal reference, significantly reducing output voltage noise and improving Power Supply Rejection Ratio (PSRR).

What is the function of the Enable/Shutdown pin?

The EN pin controls the device state; a logic high enables the output, while a logic low activates the active shutdown clamp, reducing quiescent current to nearly zero.