Microchip Technology

MIC5209BU  

Linear & Switching Voltage Regulators

MIC5209BU Description

The MIC5209BU is a high-performance linear voltage regulator designed by Microchip Technology. This regulator offers an adjustable output voltage ranging from 2.5V to 5V, making it suitable for a variety of applications requiring precise voltage control. With a maximum input voltage of 16V and the ability to deliver up to 500mA of output current, the MIC5209BU is ideal for powering sensitive electronic circuits. The regulator features a low dropout voltage of 0.6V at 500mA, ensuring efficient power conversion even at low input-to-output voltage differentials.

MIC5209BU Features

• Adjustable Output Voltage: The MIC5209BU provides an adjustable output voltage range from 2.5V to 5V, offering flexibility for various power supply requirements.
• High Input Voltage Capability: With a maximum input voltage of 16V, this regulator can handle a wide range of input sources, making it versatile for different power supply designs.
• Low Dropout Voltage: The 0.6V dropout voltage at 500mA ensures high efficiency, especially in applications where the input voltage is close to the desired output voltage.
• Low Quiescent Current: The regulator consumes only 170 µA of quiescent current, making it suitable for battery-powered devices and other low-power applications.
• High PSRR: The 75dB power supply rejection ratio at 120Hz helps in filtering out noise from the input supply, ensuring clean and stable output voltage.
• Protection Features: The MIC5209BU includes over-current, over-temperature, and reverse polarity protection, safeguarding the regulator and connected components from potential damage.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, enabling power savings and controlled startup/shutdown sequences.
• Surface Mount Packaging: The TO263-5 package is designed for surface mount applications, providing a compact and reliable solution for modern PCB designs.

MIC5209BU Applications

The MIC5209BU is well-suited for a range of applications where precise voltage regulation and high efficiency are critical. Some specific use cases include:

• Battery-Powered Devices: The low quiescent current and low dropout voltage make the MIC5209BU ideal for extending battery life in portable electronics.
• Consumer Electronics: The regulator's ability to handle a wide input voltage range and provide a stable output voltage is beneficial for consumer devices that may experience voltage fluctuations.
• Industrial Control Systems: The protection features and high PSRR ensure reliable operation in industrial environments where noise and transient conditions are common.
• Medical Equipment: The precise voltage control and low noise output are crucial for sensitive medical devices that require stable power supplies.

Conclusion of MIC5209BU

The MIC5209BU from Microchip Technology is a robust linear voltage regulator offering adjustable output voltage, high input voltage capability, and low dropout voltage. Its low quiescent current and high PSRR make it suitable for low-power and noise-sensitive applications. The inclusion of over-current, over-temperature, and reverse polarity protection ensures reliability and durability. While the product is now obsolete, its unique features and performance benefits make it a valuable component for existing designs and legacy systems. For new projects, designers may consider exploring alternative regulators from Microchip Technology that offer similar or enhanced capabilities.

MIC5209BU Documents

Download datasheets and manufacturer documentation for MIC5209BU

PCN Packaging :

MBB/Label Chgs 16/Nov/2018      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH