LM22673MRX-5.0/NOPB

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LM22673MRX-5.0/NOPB, DC DC Switching Regulators, is a low dropout (LDO) voltage regulator that provides current to 2.5A, with build-in protection cycles against over temperature and short circuit, while allowing a wide input range at 3.0V to 16V. Furthermore, it utilizes a system LDO architecture which reduces power losses and input output differential. It offers low output voltage noise, and is ideal for battery-powered automotive, industrial, and portable applications.

Application Field and Working Principle

Features of LM22673MRX-5.0/NOPB

The LM22673MRX-5.0/NOPB is a high frequency DC-DC converter optimized for a wide input voltage (3V to 16V). It operates in 1.2 MHz switching frequency, thus allowing a very compact size solution. It integrates a power FET and a synchronous rectifier, so that the output voltage can be adjusted accurately (< 1%) through external resistors. Furthermore, it provides programmable soft-start and over temperature protection.

Application Field of LM22673MRX-5.0/NOPB

LM22673MRX-5.0/NOPB is an ideal solution for applications that require low power and high efficiency DC-DC converter such as filterless buck regulator, battery management, and automotive applications. It is also suitable for portable applications demanding small footprint like tablet and power banks.

Working Principle of LM22673MRX-5.0/NOPB

The LM22673MRX-5.0/NOPB is based on a synchronous buck DC-DC converter topology. Its switch node is connected to the input voltage VIN through an external N-Channel MOSFET. When the power switch is activated, the input voltage is fed through the diode to the inductor, storing energy in the form of magnetic field. When the power switch is deactivated, the stored energy is released to the load through the diode and the inductor which acts as an energy buffer between the input and the output.

The switching frequency is typically set at 1.2 MHz, and can be adjusted by changing the external resistor. It also has built-in soft-start and over temperature protection, which helps provide system stability and robustness.

Conclusion

Overall, the LM22673MRX-5.0/NOPB provides a very simple and efficient DC-DC switch-regulator solution at a wide input voltage range. It is ideal for low power applications that demand small board space and high efficiency.

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