Texas Instruments

LP38841T-1.2

LP38841T-1.2 Description

The LP38841T-1.2 is a fixed-output linear regulator from Texas Instruments, designed to deliver a stable 1.2V output voltage with a maximum current capacity of 800mA. This regulator is housed in a TO-220-5 through-hole package, making it suitable for applications requiring robust and reliable power management solutions. The LP38841T-1.2 features a low dropout voltage of 0.21V at 800mA, ensuring efficient power delivery even under low input voltage conditions. It also includes essential protection features such as over-current, over-temperature, and short-circuit protection, enhancing its reliability and durability.

LP38841T-1.2 Features

• Output Type: Fixed at 1.2V, providing a stable and consistent power supply.
• Input Voltage Range: Capable of operating with input voltages up to 5.5V, offering flexibility in various power source configurations.
• Output Current: Delivers up to 800mA, suitable for applications requiring moderate to high current loads.
• Low Dropout Voltage: A maximum dropout voltage of 0.21V at 800mA ensures high efficiency, especially in low input voltage scenarios.
• Protection Features: Integrated over-current, over-temperature, and short-circuit protection mechanisms safeguard the regulator and connected circuits from potential damage.
• Enable Control: The enable feature allows for dynamic control of the regulator’s operation, enabling power-saving modes and precise control over power delivery.
• Quiescent Current: A low quiescent current of 30 µA minimizes power consumption during idle states, enhancing overall system efficiency.
• Power Supply Rejection Ratio (PSRR): Offers a high PSRR of 80dB to 65dB across the frequency range of 120Hz to 1kHz, ensuring minimal noise and ripple in the output voltage.
• Moisture Sensitivity Level (MSL): Rated MSL 1 (Unlimited), making it suitable for a wide range of environmental conditions without the need for special handling.

LP38841T-1.2 Applications

The LP38841T-1.2 is ideal for a variety of applications where a stable and efficient power supply is crucial. Its fixed 1.2V output and 800mA current capacity make it well-suited for powering microcontrollers, digital signal processors (DSPs), and other low-voltage digital circuits. The low dropout voltage and high PSRR ensure minimal power loss and noise, making it suitable for sensitive analog and mixed-signal applications. Additionally, its through-hole package and robust protection features make it a reliable choice for industrial and automotive applications where reliability and durability are paramount.

Conclusion of LP38841T-1.2

The LP38841T-1.2 from Texas Instruments is a versatile and reliable fixed-output linear regulator, offering a stable 1.2V output with a maximum current of 800mA. Its low dropout voltage, high PSRR, and comprehensive protection features make it an excellent choice for a wide range of applications, from digital circuits to sensitive analog systems. Despite being marked as obsolete, the LP38841T-1.2 remains a valuable component for designers seeking a robust and efficient power management solution.