Texas Instruments

LP38843T-1.5

LP38843T-1.5 Description

The LP38843T-1.5 is a fixed-output linear regulator designed by Texas Instruments, offering a robust solution for power management applications. This regulator is housed in a TO220-5 package, making it suitable for through-hole mounting. It provides a stable 1.5V output voltage with a maximum output current of 3A, ensuring reliable power delivery to various electronic systems. The regulator operates with an input voltage range up to 5.5V, making it versatile for different power supply configurations.

LP38843T-1.5 Features

• Output Type: Fixed at 1.5V, ensuring a stable voltage supply for sensitive applications.
• High Output Current: Capable of delivering up to 3A, making it suitable for high-current requirements.
• Low Dropout Voltage: A maximum dropout voltage of 0.5V at 3A ensures efficient power conversion, even at low input voltages.
• Low Quiescent Current: With a quiescent current of only 30 µA, the LP38843T-1.5 minimizes power consumption during standby conditions.
• High PSRR: The regulator boasts a power supply rejection ratio of 80dB to 65dB across a frequency range of 120Hz to 1kHz, ensuring minimal noise and ripple on the output voltage.
• Protection Features: Over-current, over-temperature, and short-circuit protections safeguard the regulator and connected circuits from damage.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, enhancing system flexibility and power management.
• Moisture Sensitivity Level: MSL 1 (Unlimited) ensures the regulator is suitable for a wide range of environmental conditions without the need for special handling.
• Compliance: The LP38843T-1.5 is REACH unaffected, meeting environmental and regulatory standards.

LP38843T-1.5 Applications

The LP38843T-1.5 is ideal for applications requiring a stable and efficient power supply with high current capabilities. Its low dropout voltage and high PSRR make it particularly suitable for:

• Consumer Electronics: Providing power to devices such as smartphones, tablets, and portable gaming consoles.
• Industrial Equipment: Ensuring reliable power for control systems, sensors, and actuators.
• Telecommunications: Powering components in base stations and network equipment.
• Automotive Systems: Suitable for in-vehicle electronic systems, including infotainment and control modules.
• Medical Devices: Ensuring stable power supply for critical medical equipment and monitoring devices.

Conclusion of LP38843T-1.5

The LP38843T-1.5 from Texas Instruments is a versatile and reliable linear regulator, offering a fixed 1.5V output with a high current capability of 3A. Its low dropout voltage and high PSRR ensure efficient and stable power delivery, making it an excellent choice for a wide range of applications. The inclusion of protection features and enable control further enhances its reliability and flexibility. While the product is now obsolete, its legacy continues to serve as a benchmark for efficient power management solutions in the electronics industry.