STMicroelectronics

L7981TR

The L7981TR is a monolithic integrated circuit designed and manufactured by STMicroelectronics. It is a step-down switching regulator (also known as a buck converter) that can be used to convert a higher input voltage to a lower output voltage. Here is a brief description of the L7981TR:

Description:

The L7981TR is a high-efficiency step-down switching regulator that can operate with input voltages from 4V to 40V. It features a wide output voltage range of 1.2V to 37.5V and can deliver an output current of up to 1.5A. The device is available in a compact 5x6mm TSOT-23 package.

Features:

Some of the key features of the L7981TR include:

1. High efficiency: The L7981TR has a high efficiency of up to 94%, which makes it suitable for battery-powered applications.
2. Wide input voltage range: The device can operate with input voltages from 4V to 40V, making it suitable for a wide range of applications.
3. Wide output voltage range: The output voltage can be adjusted from 1.2V to 37.5V using an external resistor divider.
4. Low quiescent current: The L7981TR has a low quiescent current of 1.2mA, which helps to minimize power consumption in battery-powered applications.
5. Soft-start function: The device features a soft-start function that limits the inrush current during startup.
6. Protection features: The L7981TR includes over-current protection, over-temperature protection, and under-voltage lockout to ensure safe and reliable operation.

Applications:

The L7981TR can be used in a variety of applications, including:

1. Portable electronic devices: The L7981TR can be used to regulate the voltage from batteries in portable electronic devices, such as smartphones, tablets, and laptops.
2. Power supplies: The device can be used to create compact and efficient power supplies for a wide range of applications.
3. LED lighting: The L7981TR can be used to regulate the voltage and current supplied to LED lights, improving their efficiency and lifespan.
4. Robotics: The device can be used in battery-powered robots and drones to regulate the voltage supplied to the motors and other electronic components.

Overall, the L7981TR is a versatile and efficient step-down switching regulator that can be used in a wide range of applications where a compact and efficient power supply is required.