Texas Instruments

LP38841T-0.8

LP38841T-0.8 Description

The LP38841T-0.8 is a fixed output linear regulator designed by Texas Instruments, offering a robust solution for power management applications. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Through Hole TO220-5 package. It provides a fixed output voltage of 0.8V and can deliver up to 800mA of output current, making it suitable for a variety of low-voltage, high-current applications. The LP38841T-0.8 features a maximum input voltage of 5.5V and a low dropout voltage of 0.21V at 800mA, ensuring efficient power conversion even under low input-to-output voltage differentials.

LP38841T-0.8 Features

Technical Specifications:

• Output Type: Fixed
• Input Voltage Range: Up to 5.5V
• Output Current: 800mA
• Output Voltage: Fixed at 0.8V
• Dropout Voltage: 0.21V @ 800mA
• Quiescent Current: 30 µA
• Supply Current: 40 mA
• Power Supply Rejection Ratio (PSRR): 80dB to 65dB (120Hz to 1kHz)
• Protection Features: Over Current, Over Temperature, Short Circuit
• Control Features: Enable
• Package: Tube
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Product Status: Obsolete
• REACH Status: REACH Unaffected

Performance Benefits:

• Low Dropout Voltage: The LP38841T-0.8's low dropout voltage of 0.21V at 800mA ensures high efficiency, especially in applications where the input voltage is close to the output voltage.
• High PSRR: The regulator offers a high power supply rejection ratio, ranging from 80dB at 120Hz to 65dB at 1kHz, which helps in minimizing the impact of input voltage ripple on the output voltage.
• Protection Features: Comprehensive protection features, including over current, over temperature, and short circuit protection, ensure reliable operation and protect the regulator from potential damage.
• Enable Control: The enable control feature allows for easy control of the regulator's operation, enabling quick turn-on and turn-off capabilities.

LP38841T-0.8 Applications

The LP38841T-0.8 is ideal for applications requiring a stable and efficient power supply with a fixed output voltage. Specific use cases include:

• Consumer Electronics: Ideal for portable devices, such as smartphones, tablets, and digital cameras, where low dropout voltage and high efficiency are crucial.
• Industrial Equipment: Suitable for industrial control systems, sensors, and actuators that require a reliable power source with protection features.
• Telecommunications: Applicable in base stations, routers, and other telecom equipment where low noise and high PSRR are essential.
• Automotive Electronics: Can be used in automotive infotainment systems, onboard diagnostics, and other electronic modules that demand efficient power management.

Conclusion of LP38841T-0.8

The LP38841T-0.8 from Texas Instruments is a versatile and efficient linear regulator designed for applications requiring a fixed 0.8V output and up to 800mA of current. Its low dropout voltage, high PSRR, and comprehensive protection features make it a reliable choice for various power management needs. While the product is now obsolete, it remains a example notable of Texas Instruments' commitment to delivering high-performance power management solutions. For new designs, engineers may consider exploring alternative models with similar or enhanced features to meet their specific requirements.