Texas Instruments

LM723CN

LM723CN Description

The LM723CN is a linear positive adjustable voltage regulator designed by Texas Instruments. It offers a wide input voltage range up to 40V and can deliver an output current of up to 150mA. This regulator is housed in a through-hole package, specifically a tube, making it suitable for applications requiring a robust and reliable mounting solution. The LM723CN features an adjustable output voltage ranging from 2V to 37V, providing flexibility in various power management scenarios. Despite being marked as obsolete, the LM723CN remains a viable option for certain legacy systems due to its proven performance and compatibility. With a moisture sensitivity level (MSL) of 1, it is suitable for unlimited exposure to standard environmental conditions. The operating temperature range of 0°C to 70°C ensures stable performance in typical industrial environments. Additionally, the regulator boasts a power supply rejection ratio (PSRR) of 86dB to 74dB across the frequency range of 50Hz to 10kHz, effectively filtering out noise and ripple from the input voltage.

LM723CN Features

• Adjustable Output Voltage: The LM723CN provides an adjustable output voltage from 2V to 37V, offering flexibility to meet various power requirements.
• High Input Voltage Range: With a maximum input voltage of 40V, this regulator can handle a wide range of input sources, making it suitable for diverse applications.
• Current Limit and Frequency Control: The regulator includes current limit and frequency control features, enhancing its stability and reliability in dynamic load conditions.
• Short Circuit Protection: The LM723CN is equipped with short circuit protection, safeguarding the device and connected circuits from potential damage.
• Low Noise Performance: The PSRR of 86dB to 74dB ensures low noise output, making it ideal for sensitive electronic systems where clean power supply is crucial.
• Through-Hole Mounting: The through-hole package type ensures robust mechanical stability and ease of integration into printed circuit boards (PCBs).
• Wide Operating Temperature Range: The operating temperature range of 0°C to 70°C makes it suitable for use in various industrial and consumer applications.

LM723CN Applications

The LM723CN is well-suited for a variety of applications due to its adjustable output voltage, high input voltage range, and robust protection features. Some specific use cases include:

• Power Supply Design: Ideal for designing power supplies in consumer electronics, industrial equipment, and automotive systems where a stable and adjustable voltage output is required.
• Battery Chargers: Suitable for battery charging applications where the adjustable voltage feature can be used to match the charging requirements of different battery types.
• Instrumentation and Control Systems: The low noise and high PSRR make it suitable for precision instrumentation and control systems where accurate voltage regulation is essential.
• Legacy Systems: Given its obsolete status, the LM723CN can be a critical component for maintaining and repairing older systems where modern alternatives may not be compatible.

Conclusion of LM723CN

The LM723CN, despite being marked as obsolete, remains a reliable and versatile linear voltage regulator from Texas Instruments. Its wide input voltage range, adjustable output voltage, and robust protection features make it suitable for a variety of applications, particularly in legacy systems and environments where proven technology is preferred. The through-hole mounting and wide operating temperature range further enhance its reliability and ease of integration. While modern alternatives may offer advanced features, the LM723CN continues to provide a cost-effective and dependable solution for power management needs.