The LM2576SX-ADJ is an adjustable step-down (buck) switching voltage regulator integrated circuit (IC) manufactured by Texas Instruments. It is a versatile component that provides efficient voltage conversion for various applications. Here, we will explore its key features and functions.
The LM2576SX-ADJ is designed to step down higher input voltages to adjustable lower voltages. Its input voltage can range from 4V to 40V, making it suitable for a wide range of power supply designs. The output voltage can be adjusted from 1.23V to 37V by using external resistors.
One of the main features of the LM2576SX-ADJ is its high efficiency. With a low-dropout voltage of only 1V, it can deliver continuous output currents of up to 3A. This efficiency is achieved through the use of a pulse-width modulation (PWM) control circuit that switches the IC's internal power transistor at a fixed frequency of 52 kHz.
To protect the component and the connected circuitry, the LM2576SX-ADJ incorporates various safety features. It includes thermal shutdown, which automatically turns off the regulator if the internal temperature exceeds the specified limit. Additionally, it has current limiting and short circuit protection, safeguarding against excessive output current and short circuits.
The IC also offers excellent line and load regulation
