Microchip Technology

MIC5319-1.8BD5  

Linear & Switching Voltage Regulators

MIC5319-1.8BD5 Description

The MIC5319-1.8BD5 is a linear voltage regulator designed by Microchip Technology, featuring a fixed output voltage of 1.8V and capable of delivering up to 500mA of output current. This regulator is designed for surface mount applications and comes in a compact TSOT23-5 package, making it suitable for space-constrained designs. The regulator operates with an input voltage range up to 5.5V and offers a quiescent current of just 150 µA, ensuring high efficiency even at low load conditions. The device includes an enable control feature, allowing for precise power management, and provides robust protection against overcurrent and overtemperature conditions. Despite its obsolescence, the MIC5319-1.8BD5 remains a reliable choice for applications requiring a stable 1.8V supply.

MIC5319-1.8BD5 Features

• Fixed Output Voltage: The MIC5319-1.8BD5 provides a stable 1.8V output voltage, ensuring consistent power supply for sensitive electronic components.
• High Efficiency: With a maximum input voltage of 5.5V and a quiescent current of only 150 µA, this regulator offers high efficiency and minimal power loss.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, enabling power savings and controlled startup sequences.
• Protection Features: Overcurrent and overtemperature protections ensure the longevity and reliability of the regulator under varying load conditions.
• Low Noise and High PSRR: The regulator exhibits a power supply rejection ratio (PSRR) of 70dB at 1kHz and 60dB at 10kHz, minimizing noise and ripple in the output voltage.
• Moisture Sensitivity Level 1: The device is classified as MSL 1, indicating it is not moisture-sensitive and can be stored and handled without special precautions.
• Compliance: The regulator is REACH unaffected and classified under ECCN EAR99, ensuring compliance with international regulations.

MIC5319-1.8BD5 Applications

The MIC5319-1.8BD5 is ideal for a variety of applications requiring a stable 1.8V power supply. Its compact size and surface mount package make it suitable for:

• Embedded Systems: Providing a reliable power source for microcontrollers, sensors, and other low-power components.
• Communication Devices: Ensuring stable power for RF modules and communication interfaces.
• Consumer Electronics: Powering portable devices, wearables, and other compact electronics where space and efficiency are critical.
• Industrial Automation: Supplying power to control circuits, sensors, and actuators in industrial environments.

Conclusion of MIC5319-1.8BD5

The MIC5319-1.8BD5, despite being marked as obsolete, remains a robust and reliable choice for applications requiring a stable 1.8V supply. Its low quiescent current, high PSRR, and compact TSOT23-5 package make it an attractive option for designers looking to optimize space and efficiency. The inclusion of enable control and comprehensive protection features further enhances its versatility and reliability. For applications where a fixed 1.8V output and up to 500mA current are required, the MIC5319-1.8BD5 continues to offer a dependable solution.

MIC5319-1.8BD5 Documents

Download datasheets and manufacturer documentation for MIC5319-1.8BD5