Texas Instruments

LM2931IBP-3.3

LM2931IBP-3.3 Description

The LM2931IBP-3.3 is a fixed-output linear voltage regulator designed by Texas Instruments. It offers a regulated output voltage of 3.3V with a maximum output current of 100mA. This regulator is designed for surface mount applications and is housed in a 6USMD package. The LM2931IBP-3.3 is capable of operating with an input voltage range up to 26V, making it suitable for a variety of power supply applications. It features a low dropout voltage of 0.3V at 100mA, ensuring efficient operation even at low input-to-output voltage differentials.

LM2931IBP-3.3 Features

• Fixed Output Voltage: The LM2931IBP-3.3 provides a stable 3.3V output, ideal for applications requiring a precise and consistent power supply.
• Low Dropout Voltage: With a maximum dropout voltage of 0.3V at 100mA, this regulator maintains high efficiency and performance even when the input voltage is close to the output voltage.
• Protection Features: The regulator includes over-temperature, reverse polarity, and short-circuit protection, ensuring robustness and reliability in various operating conditions.
• Low Quiescent Current: A quiescent current of only 1mA minimizes power consumption, making it suitable for low-power applications.
• High PSRR: The regulator boasts a power supply rejection ratio (PSRR) of 55dB at 120Hz, effectively filtering out noise from the input power supply.
• Surface Mount Packaging: The 6USMD package format is ideal for surface mount technology (SMT) applications, providing a compact and reliable solution for modern electronic designs.
• Moisture Sensitivity Level: The MSL rating of 1 (Unlimited) ensures the regulator is suitable for a wide range of manufacturing environments without the need for special handling precautions.

LM2931IBP-3.3 Applications

The LM2931IBP-3.3 is well-suited for a variety of applications where a stable and efficient 3.3V power supply is required. Key applications include:

• Embedded Systems: Providing a reliable power source for microcontrollers, sensors, and other low-power components in embedded systems.
• Consumer Electronics: Ideal for powering small electronic devices such as portable gadgets, where low power consumption and compact size are critical.
• Industrial Control: Suitable for industrial applications requiring stable voltage regulation, such as PLCs and other control systems.
• Telecommunications: Can be used in low-power communication modules and IoT devices where a stable 3.3V supply is necessary.

Conclusion of LM2931IBP-3.3

The LM2931IBP-3.3 is a versatile and efficient linear voltage regulator that offers a stable 3.3V output with a maximum current of 100mA. Its low dropout voltage, low quiescent current, and robust protection features make it an excellent choice for a wide range of applications. Despite being marked as obsolete, the LM2931IBP-3.3 remains a reliable option for designers seeking a compact, efficient, and reliable power solution.