Texas Instruments

LP2953IN-3.3

LP2953IN-3.3 Description

The LP2953IN-3.3 is a linear positive adjustable voltage regulator designed by Texas Instruments, offering a fixed output voltage of 3.3V. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a through-hole package, specifically a 16DIP configuration. Despite being marked as obsolete, it remains a reliable choice for applications requiring a stable power supply with a maximum input voltage of 30V and an output current capability of up to 250mA. The regulator features a dropout voltage of 0.8V at 250mA, ensuring efficient operation even at lower input-to-output voltage differentials. With a quiescent current of only 170 µA, the LP2953IN-3.3 is well-suited for low-power applications. It also includes essential protection features such as over-current, over-temperature, and reverse polarity protection, enhancing its robustness and reliability.

LP2953IN-3.3 Features

• Output Type: Adjustable (Fixed) - Provides a stable 3.3V output.
• Input Voltage Range: Up to 30V - Suitable for a wide range of input voltage levels.
• Output Current: 250mA - Capable of delivering sufficient current for various applications.
• Dropout Voltage: 0.8V @ 250mA - Ensures efficient operation with minimal voltage drop.
• Quiescent Current: 170 µA - Ideal for low-power applications, minimizing power consumption.
• Protection Features: Over-current, over-temperature, and reverse polarity protection - Enhances reliability and safety.
• Enable Control: Allows for dynamic control of the regulator's operation.
• Compliance: REACH Unaffected and ROHS3 Compliant - Meets environmental and regulatory standards.
• Moisture Sensitivity Level: MSL 3 (168 Hours) - Suitable for standard manufacturing processes.

LP2953IN-3.3 Applications

The LP2953IN-3.3 is ideal for a variety of applications where a stable and efficient power supply is required. Its fixed 3.3V output makes it particularly suitable for powering microcontrollers, digital logic circuits, and other low-voltage electronics. The regulator's ability to handle up to 30V input and deliver 250mA output current makes it a versatile choice for both small-scale and moderately demanding applications. Its low dropout voltage ensures efficient operation in scenarios where the input voltage may be close to the desired output voltage. Additionally, the inclusion of over-current, over-temperature, and reverse polarity protection features makes it a reliable option for applications in harsh or unpredictable environments.

Conclusion of LP2953IN-3.3

The LP2953IN-3.3 from Texas Instruments is a robust and efficient linear voltage regulator, offering a fixed 3.3V output with a maximum input voltage of 30V and an output current capability of 250mA. Its low dropout voltage and low quiescent current make it an ideal choice for low-power applications, while its comprehensive protection features ensure reliability and safety. Despite its obsolete status, the LP2953IN-3.3 remains a viable option for applications requiring a stable and efficient power supply. Its compliance with REACH and ROHS3 standards further enhances its suitability for modern electronics manufacturing.