STMicroelectronics

L4931CDT120-TR

L4931CDT120-TR Description

The L4931CDT120-TR is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 12V and a maximum output current of 250mA. This device is housed in a DPAK package, suitable for surface mount applications, and is available in a tape and reel format. Despite being marked as obsolete, the L4931CDT120-TR remains a reliable choice for applications requiring a stable power supply with a maximum input voltage of 20V. The regulator features a low dropout voltage of 0.8V at 250mA, ensuring efficient operation even under varying input conditions. It also includes over-current and over-temperature protection, enhancing its reliability and safety in demanding environments.

L493CD1T120-TR Features

• Output Type: Fixed at 12V, providing a stable power supply for various electronic circuits.
• Input Voltage Range: Capable of handling up to 20V, making it suitable for a wide range of input conditions.
• Output Current: Delivers a maximum of 250mA, sufficient for many low to medium power applications.
• Low Dropout Voltage: 0.8V at 250mA, ensuring high efficiency and minimal power loss.
• Protection Features: Over-current and over-temperature protection safeguard the device and connected circuits.
• Package Type: DPAK, ideal for surface mount applications, ensuring compact and reliable integration.
• Supply Current: A maximum of 7mA, with a quiescent current of 1.6mA, contributing to low power consumption.
• Noise Performance: A PSRR of 64dB to 55dB across the frequency range of 120Hz to 10kHz, ensuring minimal noise interference.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for various storage and operational environments.

L4931CDT120-TR Applications

The L4931CDT120-TR is well-suited for applications requiring a stable and reliable power supply. Its fixed 12V output and 250mA current capability make it ideal for:

• Consumer Electronics: Powering small electronic devices and peripherals that require a stable 12V supply.
• Industrial Equipment: Providing a reliable power source for sensors, actuators, and control circuits in industrial settings.
• Telecommunications: Supplying power to low-power communication modules and interfaces.
• Automotive: Suitable for automotive electronics where a stable 12V supply is needed, such as in dashboard electronics and infotainment systems.
• Medical Devices: Powering low-power medical equipment and monitoring devices that require precise voltage regulation.

Conclusion of L4931CDT120-TR

The L4931CDT120-TR, despite being marked as obsolete, remains a robust and reliable choice for applications requiring a stable 12V power supply. Its low dropout voltage, over-current and over-temperature protection, and compact DPAK package make it a versatile and efficient solution. While newer alternatives may offer enhanced features, the L4931CDT120-TR continues to provide dependable performance in a wide range of applications, ensuring its relevance in the electronics industry.