STMicroelectronics

L4931ABDT80  

Linear & Switching Voltage Regulators

L4931ABDT80 Description

The L4931ABDT80 is a fixed linear regulator designed by STMicroelectronics, a leading manufacturer in the electronics industry. This regulator is part of the Power Management Integrated Circuit (PMIC) category and is housed in a DPAK package, suitable for surface mount applications. It is designed to provide a stable 8V output voltage with a maximum output current of 250mA. The input voltage range extends up to 20V, ensuring compatibility with a variety of power sources. The regulator features a low dropout voltage of 0.8V at 250mA, which enhances efficiency and performance in low-voltage applications.

L4931ABDT80 Features

• Fixed Output Voltage: The L4931ABDT80 provides a fixed output voltage of 8V, ensuring a stable power supply for connected devices.
• High Efficiency: With a dropout voltage of 0.8V at 250mA, the regulator maintains high efficiency even under low input-to-output voltage differentials.
• Low Quiescent Current: The regulator operates with a quiescent current of only 1.6mA, making it suitable for low-power applications.
• Protection Features: The L4931ABDT80 includes over-current and over-temperature protection, safeguarding both the regulator and the connected load from damage.
• High PSRR: The regulator offers a high power supply rejection ratio (PSRR) of 67dB to 55dB across a frequency range of 120Hz to 10kHz, ensuring minimal noise and ripple in the output voltage.
• Compliance and Packaging: The L4931ABDT80 is REACH unaffected and RoHS3 compliant, adhering to environmental and safety standards. It is available in a tube package, facilitating easy handling and assembly.

L4931ABDT80 Applications

The L4391ABDT80 is ideal for a range of applications where a stable and efficient power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering small electronic devices such as portable audio equipment, where a stable 8V supply is needed.
• Industrial Equipment: Suitable for low-power industrial applications requiring a reliable power source with protection features.
• Automotive Systems: Can be used in automotive applications where a fixed 8V supply is necessary, such as in dashboard electronics or infotainment systems.
• Telecommunications: Provides a stable power supply for low-power telecommunication devices, ensuring reliable under operation varying input voltage conditions.

Conclusion of L4931ABDT80

The L4931ABDT80 from STMicroelectronics is a robust and efficient linear regulator designed for applications requiring a stable 8V output. Its low dropout voltage, high PSRR, and protection features make it a reliable choice for various electronic systems. Despite being marked as obsolete, the L4931ABDT80 remains a viable option for designers seeking a fixed voltage regulator with a proven track record. Its compliance with environmental standards and availability in a surface mount package further enhance its appeal for modern electronics applications.

L4931ABDT80 Documents

Download datasheets and manufacturer documentation for L4931ABDT80

Datasheets :

L4931ABxx, L4931Cxx      

HTML Datasheet :

L4931ABxx, L4931Cxx