STMicroelectronics

L4931ABDT33-TR

The L4931ABDT33-TR is a high-performance, step-down (buck) switching regulator from STMicroelectronics. It is designed to provide efficient power conversion for a wide range of applications, including automotive, industrial, and consumer electronics.

Description:

The L4931ABDT33-TR is a monolithic integrated circuit that provides a highly efficient step-down DC-DC converter with a wide input voltage range. It is available in a thermally enhanced PowerSSO-20 package, making it suitable for use in compact and space-constrained applications.

Features:

1. Wide input voltage range: The L4931ABDT33-TR can operate with input voltages from 4V to 40V, making it suitable for a wide range of power supply applications.
2. High efficiency: The device achieves high efficiency levels of up to 96%, reducing power dissipation and improving overall system performance.
3. Fixed or adjustable output voltage: The output voltage can be set to a fixed value of 3.3V or can be externally adjusted using a resistor divider.
4. High-frequency operation: The L4931ABDT33-TR operates at a high switching frequency of up to 2MHz, allowing for the use of smaller external components and more compact designs.
5. Low quiescent current: The device has a low quiescent current of 1.5uA in run mode and 0.1uA in shutdown mode, contributing to low power consumption.
6. Protection features: The L4931ABDT33-TR includes over-current protection, over-temperature protection, and short-circuit protection to ensure reliable operation.
7. Thermal shutdown: The device features thermal shutdown to protect against overheating and potential damage.

Applications:

1. Automotive applications: The L4931ABDT33-TR is suitable for use in automotive applications, such as infotainment systems, lighting, and power management systems.
2. Industrial applications: The device can be used in industrial equipment, such as motor controllers, sensor power supplies, and programmable logic controllers.
3. Consumer electronics: The L4931ABDT33-TR can be used in portable devices, smartphones, tablets, and laptops for power management and voltage regulation.
4. Telecommunications: The device can be used in power supply applications for telecommunications equipment, such as routers, modems, and base stations.
5. Medical equipment: The L4931ABDT33-TR can be used in medical devices, such as portable monitoring equipment and diagnostic instruments, for efficient power conversion.

In summary, the L4931ABDT33-TR from STMicroelectronics is a versatile and efficient step-down switching regulator with a wide input voltage range, high efficiency, and various protection features. It is suitable for use in a wide range of applications, including automotive, industrial, and consumer electronics.