MIC5209-3.3BS

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

The MIC5209-3.3BS is a fixed-output linear voltage regulator manufactured by Microchip Technology, providing a nominal 3.3V output with a maximum continuous current of 500mA. It operates within an input voltage range of +2.5V to +16V and features a maximum dropout voltage of 500mV at full load. The device ensures high precision with better than 1% output accuracy and includes integrated protection mechanisms such as current limiting, thermal shutdown, and reversed-battery protection. Designed for thermally efficient surface-mount applications, it supports operation across a junction temperature range of -40°C to +125°C.

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

• Guarantees 500mA output capability over the full operating temperature range.
• Features extremely tight load and line regulation with low temperature coefficient.
• Includes comprehensive protection against current overload, overheating, and reversed battery connections.
• Provides no-load stability suitable for CMOS RAM keep-alive applications.

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 that the specific part number suffix corresponds to the SOIC-8 package type, as the MIC5209 series utilizes distinct suffixes for different physical packages. Confirm compliance with RoHS3 specifications and ensure the supply chain source provides valid traceability documentation. Cross-reference the manufacturer's latest packaging specifications to ensure compatibility with automated assembly processes.

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

Select this component when a fixed 3.3V rail is required with high current capacity in a compact form factor. The SOIC-8 package offers an enable/shutdown pin for power management, unlike the SOT-223 variant. Ensure the application does not require ultra-low-noise performance without additional external bypassing, as noise reduction features are primarily optimized for the SOIC-8 and DDPAK versions.

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

This device belongs to the MIC5209 family of 500mA Low-Noise LDO regulators originally developed by Micrel Semiconductor before being acquired by Microchip Technology. The family encompasses various output voltages and package options, including SOT-223, SOIC-8, DDPAK, and DFN. The MIC5209-3.3BS specifically denotes the 3.3V fixed output version housed in the SOIC-8 package.

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

MIC5209-3.3YM

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

Does the MIC5209-3.3BS include an enable/shutdown control feature?

Yes, the SOIC-8 package version includes an Enable (EN) pin that allows the regulator to be turned on or off via a logic signal.

What is the minimum output capacitor requirement for basic stability?

A minimum output capacitance of 1 µF is recommended for basic fixed-voltage applications to prevent oscillation.