Texas Instruments

LP3874EMP-1.8  

Linear & Switching Voltage Regulators

LP3874EMP-1.8 Description

The LP3874EMP-1.8 is a linear regulator designed by Texas Instruments, offering a fixed output voltage of 1.8V and capable of delivering up to 800mA of output current. This device is housed in a SOT223-5 package, making it suitable for surface mount applications. Despite being marked as obsolete, the LP3874EMP-1.8 remains a reliable choice for power management in various electronic systems due to its robust performance and comprehensive feature set.

LP3874EMP-1.8 Features

• Output Type: Fixed at 1.8V, ensuring stable power supply for sensitive electronic components.
• Input Voltage Range: The regulator can operate with input voltages up to 7V, providing flexibility in power source selection.
• Output Current: With a maximum output current of 800mA, the LP3874EMP-1.8 is well-suited for applications requiring moderate to high current loads.
• Low Dropout Voltage: A maximum dropout voltage of 0.35V at 800mA ensures efficient operation even when the input voltage is close to the output voltage.
• Control Features: The enable feature allows for dynamic control of the regulator, enabling power-saving modes and precise power management.
• Protection Features: Over-current, over-temperature, and short-circuit protections safeguard the device and connected components from damage.
• Low Quiescent Current: A quiescent current of 9mA ensures minimal power consumption during operation.
• High PSRR: The power supply rejection ratio (PSRR) ranges from 73dB to 57dB at 120Hz, providing excellent noise suppression and stable output voltage.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates that the device is suitable for use in various environmental conditions without the need for special handling.
• Package Type: The Tape & Reel (TR) packaging format facilitates automated assembly processes, enhancing manufacturing efficiency.

LP3874EMP-1.8 Applications

The LP3874EMP-1.8 is ideal for a range of applications where a stable and efficient power supply is crucial. Some specific use cases include:

• Consumer Electronics: Ideal for powering microcontrollers, sensors, and other low-voltage components in devices such as smartphones, tablets, and IoT devices.
• Telecommunications: Suitable for providing stable power to communication modules and base stations, ensuring reliable operation.
• Industrial Equipment: Can be used in control systems, PLCs, and other industrial applications where precise voltage regulation is required.
• Automotive Electronics: Ideal for powering various electronic components in vehicles, including infotainment systems and electronic control units.

Conclusion of LP3874EMP-1.8

The LP3874EMP-1.8 from Texas Instruments is a versatile linear regulator that offers a balance of performance and reliability. Its fixed 1.8V output and 800mA current capability make it suitable for a wide range of applications, while its low dropout voltage and comprehensive protection features ensure efficient and safe operation. Despite its obsolete status, the LP3874EMP-1.8 remains a valuable component for designers seeking a dependable power management solution.

LP3874EMP-1.8 Documents

Download datasheets and manufacturer documentation for LP3874EMP-1.8