LM22671MR-5.0/NOPB

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Today, we are going to discuss about the application field and working principle of LM22671MR-5.0/NOPB.

The LM22671MR-5.0/NOPB belongs to the family of DC to DC switching voltage regulators of PMIC – Voltage Regulators. The LM22671MR-5.0/NOPB is a 2A Switching Mode Step Down DC to DC Converter (SMPS). It features an internal 2.6V reference voltage, an internal Soft Start circuit, an internal two phase compensation network and a fixed frequency current mode PWM operation. It also has an integrated high side MOSFET and an integral power diode.

The LM22671MR-5.0/NOPB is specifically designed to provide a wide range of output voltages with selectable output voltage range of 1.2V to 5V. The device has a wide operating temperature range that can safely operate up to +125°C to -40°C. Furthermore, it offers many protections such as short circuit, over temperature and current limit.

As for its applications, LM22671MR-5.0/NOPB is widely used in various market segments such as mobile phones, digital cameras, netbooks and other mobile PC\'s and cellular base station RF amplifiers. It is also used in automotive and industrial applications such as battery-powered systems, IGBT modules and high-powered LED backlighting.

In terms of its working principle, the LM22671MR-5.0/NOPB is based on a pulse width modulation (PWM) switching regulator topology. This type of regulator works by periodically switching the integrated power MOSFET between the input supply voltage and ground. When the integrated power MOSFET is switched on, it is said to be “on-time”, and during this period, the output terminal is essentially connected to the input supply voltage. Conversely, when the power MOSFET is switched off, it is said to be “off-time”, and during this period, the output terminal is essentially connected to the ground. By controlling the on-time and off-time of the power MOSFET, the regulator can control the output voltage. The duration of the on-time and off-time is determined by the amount of current on the output, as the internal feedback loop will switch the power MOSFET off or on depending on the output voltage.

The LM22671MR-5.0/NOPB has a built-in current limit and thermal shutdown that helps prevent excessive current flow and the device from overheating. This switching regulator also has an internal clock with a frequency range from 200KHz to 2MHz, which is user selectable. This frequency can be changed with an included external resistor.

To sum it up, the LM22671MR-5.0/NOPB is a DC-DC switching regulator with a wide range of output voltages. It is widely used in various market segments, such as mobile phones and digital cameras. The working principle is based on a pulse width modulation switching capability to control the output voltage by changing the on-time and off-time of the integrated power MOSFET. It is also equipped with a built-in current limit and thermal shutdown, as well as an internal clock with a wide frequency range.

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