LM2576T-ADJ/NOPB

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The LM2576T-ADJ/NOPB is a switch-mode step-down DC-DC regulator that is capable of delivering up to 1.5A of output current. This device is also known as an adjustable voltage regulator because it is capable of being adjusted to output a desired 25V output voltage. The LM2576T-ADJ/NOPB is capable of providing a stable and efficient low-cost solution for low-power applications. It has a wide input voltage range of 4.5V to 40V, allowing it to be used with a wide array of input sources.

Application Field

The LM2576T-ADJ/NOPB has a wide range of applications in industrial, medical, automotive and communications industries. The high frequency switching capability makes it ideal for use in applications where space is at a premium, such as in battery charging circuitry, high-current point-of-load regulation, and portable electronic device power regulation. The adjustable output capabilities of the device make it ideal for use in low-cost power supply designs. In automotive applications, the LM2576T-ADJ/NOPB can be used in electronic power steering systems and power window motors.

Working Principle

The LM2576T-ADJ/NOPB operates by switching ON and OFF a power switch in order to regulate the output voltage. The switching frequency of the device can be programmed by the onboard clock. As the input voltage or load on the output varies, the controller senses the change in voltage and adjusts the switching frequency accordingly in order to maintain the desired output voltage. In order to maximize the efficiency of the regulator, the device enters a low-power standby mode when the input voltage or output load is too low. This reduces the power dissipated in the device, which offers better overall efficiency.

Protection Features

To protect the device from damage caused by abnormal conditions, such as output overload or over-temperature, the LM2576T-ADJ/NOPB includes several protection features. The adjustable output current limit feature prevents the device from delivering more current than it is capable of handling. The device also includes over-temperature protection, which shuts down the output if the junction temperature exceeds the specified limit. The device also features under-voltage lockout, which prevents the device from operating if the input voltage falls below the specified operating limit. Finally, the device features an adjustable soft-start feature, which prevents the device from operating with an excessive inrush current.

Summary

The LM2576T-ADJ/NOPB is a switch-mode step-down DC-DC regulator that is capable of delivering up to 1.5A of output current. It has a wide input voltage range of 4.5V to 40V, allowing it to be used with a wide array of input sources. This device is capable of providing a stable and efficient low-cost solution for low-power applications and is ideal for use in industrial, medical, automotive and communications applications. The device features several protection features, such as output overload protection, over-temperature protection, and under-voltage lockout. The adjustable output current limit and soft start features further protect the device from damage caused by abnormal conditions.

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