STMicroelectronics

L7915CT

L7915CT Description

The L7915CT is a linear voltage regulator designed by STMicroelectronics, featuring a output fixed voltage of -15V and a maximum output current of 1.5A. This regulator is housed in a TO-3 package, making it suitable for through-hole mounting. Despite being marked as obsolete, the L7915CT remains a robust choice for applications requiring a stable negative voltage supply. With a dropout voltage of 1.1V at 1A (typical), it ensures efficient operation even under varying load conditions. The regulator operates within a temperature range of 0°C to 125°C, making it suitable for a wide range of industrial and commercial applications.

L7915CT

Features- Output Type: Fixed at -15V, ensuring a stable and reliable power supply.

• Output Current: Capable of delivering up to 1.5A, making it suitable for demanding applications.
• Number of Regulators: Single regulator design simplifies circuit design and reduces component count.
• Output Configuration: Negative output voltage, ideal for applications requiring a negative power rail.
• Voltage Dropout: 1.1V at 1A (typical), ensuring efficient operation under varying load conditions.
• Operating Temperature: Wide range of 0°C to 12°C5, suitable for diverse operating environments.
• Quiescent Current: Low quiescent current of 3 mA, minimizing power consumption during standby.
• PSRR: High power supply rejection ratio of 60dB at 120Hz, ensuring minimal noise and ripple.
• Protection Features: Over-temperature and short-circuit protection, enhancing reliability and longevity.
• Compliance: REACH unaffected and ROHS3 compliant, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for storage and handling in various conditions.

L7915CT Applications

The L7915CT is ideal for a variety of applications where a stable negative voltage supply is required. Its robust design and high current capability make it suitable for:

• Industrial Control Systems: Providing stable power to control circuits and sensors.
• Telecommunications Equipment: Supplying power to negative voltage rails in communication systems.
• Medical Devices: Ensuring reliable power supply in medical equipment requiring negative voltage.
• Automotive Electronics: Suitable for automotive applications where a negative voltage supply is necessary.
• Power Supply Units: Ideal for creating stable power supplies in various electronic systems.

Conclusion of L7915CT

The L7915CT, despite being obsolete, remains a reliable and efficient linear voltage regulator for applications requiring a stable -15V supply. Its high current capability, low dropout voltage, and robust protection features make it a standout choice in its category. The wide operating temperature range and compliance with environmental and regulatory standards further enhance its suitability for diverse applications. For engineers and designers looking for a dependable negative voltage regulator, the L7915CT offers a proven solution with a track record of performance and reliability.