Texas Instruments

REG102NA-2.5/3K

REG102NA-2.5/3K Description

The REG102NA-2.5/3K is a linear voltage regulator designed by Texas Instruments, featuring a fixed output voltage of 2.5V and a maximum output current of 250mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface mount applications. Despite its small form factor, the REG102NA-2.5/3K offers robust performance with a maximum input voltage of 10V and a dropout voltage of only 0.27V at 250mA. The regulator includes an enable control feature and provides over-current and over-temperature protection, ensuring reliable operation in various conditions. While the product is marked as obsolete, it remains a viable option for existing designs and specific applications that require its unique set of features.

REG102NA-2.5/3K Features

• Fixed Output Voltage: The REG102NA-2.5/3K provides a stable 2.5V output voltage, ensuring consistent power supply to sensitive electronic components.
• High Efficiency: With a low dropout voltage of 0.27V at 250mA, the regulator maintains high efficiency even under heavy load conditions, minimizing power loss and heat generation.
• Low Quiescent Current: The regulator consumes only 500 µA in quiescent mode, making it suitable for low-power applications where energy efficiency is critical.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, enabling power-saving modes and controlled startup/shutdown sequences.
• Protection Features: Over-current and over-temperature protection mechanisms safeguard the regulator and connected components from damage due to excessive current or heat.
• Compact Design: The SOT23-5 package is ideal for space-constrained designs, fitting seamlessly into modern, compact electronic devices.
• High PSRR: The regulator offers a power supply rejection ratio (PSRR) of 65dB at 120Hz, effectively filtering out noise from the input power supply to maintain a clean output voltage.

REG102NA-2.5/3K Applications

The REG102NA-2.5/3K is well-suited for a variety of applications where a stable, low-voltage power supply is required. Its compact size and high efficiency make it particularly useful in:

• Portable Devices: Ideal for battery-powered devices such as smartphones, tablets, and portable medical equipment, where space and power efficiency are paramount.
• Embedded Systems: Suitable for microcontroller and microprocessor-based systems that require a reliable and stable power source.
• Communication Equipment: Can be used in low-power communication modules and IoT devices to ensure consistent performance.
• Medical Devices: Provides a stable power supply for medical sensors and diagnostic equipment, ensuring accurate readings and reliable operation.

Conclusion of REG102NA-2.5/3K

The REG102NA-2.5/3K from Texas Instruments is a versatile linear voltage regulator that offers a balance of performance, efficiency, and reliability in a compact package. Its low dropout voltage, low quiescent current, and enable control feature make it a valuable component for a wide range of applications, particularly in portable and embedded systems. Despite being marked as obsolete, the REG102NA-2.5/3K remains a reliable choice for existing designs and specific applications that benefit from its unique set of features.