MIC5209YU-TR

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

The MIC5209YU-TR is a fixed-output linear voltage regulator manufactured by Microchip Technology. It provides a guaranteed 500 mA output current over the full operating temperature range with a maximum dropout voltage of 600 mV at full load. The device features an input voltage range of +2.5 V to +16 V and offers better than 1% output accuracy. It includes an enable/shutdown pin for near-zero shutdown current, reversed-battery protection, current limiting, and thermal shutdown.

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

• Guaranteed 500 mA continuous output current across the full operating temperature range
• Ultra-low-noise capability in DDPAK package with optional reference bypass
• Integrated reversed-battery protection, current limiting, and thermal shutdown
• Enable/shutdown control 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
• SMPS post-regulator and DC/DC modules

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

Verify the specific output voltage value associated with the suffix in the part number MIC5209YU-TR against official documentation, as the base model supports a wide range. Confirm that the TR suffix indicates tape and reel packaging. Ensure the DDPAK (TO-263-5) package type matches the design requirements for thermal management and board space.

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

Select this component when a thermally efficient surface-mount package is required for high-current applications. The DDPAK package offers superior heat dissipation compared to smaller packages. Consider the ultra-low-noise feature if powering sensitive analog or RF circuits. Verify that the input voltage remains within the 16 V maximum limit under all operating conditions.

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

The MIC5209 series is designed for battery-powered devices requiring low ground current to prolong battery life. The YU suffix denotes the DDPAK (TO-263-5) package variant, which includes an enable pin and an optional bypass pin for noise reduction. This package is suitable for applications demanding higher power dissipation capabilities while maintaining a small footprint.

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

Check for updated part numbers following the Micrel to Microchip transition. Verify compatibility with existing PCB footprints and thermal requirements when substituting with other LDO regulators from the same family or competitors.