LMR33620BRNXR

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The LMR33620BRNXR is a fixed frequency, step-down switching regulator, commonly referred to as a DC-DC converter. It is a type of PMIC (Power Management IC) device and is part of the Voltage Regulators family of DC DC Switching Regulators.

This regulator is suitable for a wide range of applications, including powering peripheral devices, and can operate across a wide input voltage range of 4.5V to 40V. It has an integrated switch that can handle up to 3A of continuous current, so it is suitable for large, high-power applications. Its operating frequency is fixed at 300kHz, and its switching characteristics can be configured using its default resistive divider settings.

In addition to its fixed frequency, easy to use design, the LMR33620BRNXR also offers several safety features. It has an output voltage accuracy of ±2%, an adjustable current limit, and an integrated thermal shutdown circuit. This makes it an ideal choice for applications where consistent and reliable electrical performance is critical.

To understand how the LMR33620BRNXR works, it is important to understand the basics of DC-DC switching power converters. As the name suggests, these converters use a switch to switch power from a high voltage DC source, such as a battery or wall adapter, to a lower voltage regulated output. At a basic level, these converters consist of four components: an input DC source, an inductor, a switch, and a diode.

The input voltage is fed into the switch using the alternation of two voltage sources. When the switch is in the “on” state, current will flow through the inductor and diode in a loop before it is eventually sent to the output load. When the switch is in the “off” state, the current through the inductor will be stored in its magnetic field, and will be delivered to the load when the switch is reset again.

By controlling the “on” and “off” states of the switch, the output voltage of the LMR33620BRNXR can be adjusted. The output voltage is regulated using two feedback signals: the voltage error signal, which compares the actual output voltage with the expected voltage, and the current limit feature, which monitors the current draw of the output.

The LMR33620BRNXR offers a number of advantages over conventional linear regulators, including improved efficiency, better voltage accuracy, and smaller footprint. It is an excellent choice for applications that require reliable and consistent performance from a high-power DC-DC converter.

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