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LM2575HVS-3.3/NOPB

The LM2575HVS-3.3/NOPB is a high-performance and highly efficient switch mode fixed frequency pulse-width modulator (SMPS). As a DC-DC buck converter regulator, it provides a regulated output voltage of 3.3 V with a very high efficiency of up to 87%. This state-of-the-art device is suitable for a wide range of applications that require a stable output voltage, while offering a cost-effective solution.

Features

• Wide input voltage range of 3 V to 40 V
• Wide output voltage range of 0.8 V to 6 V
• High efficiency of up to 87%
• Low quiescent current
• Thermal shutdown protection
• Output over-current protection
• Over-voltage protection
• Low ripple and EMI

Applications

• Wireless communications equipment
• Portable consumer electronics devices
• Power management systems
• LED lighting
• Battery chargers

Working Principle

The LM2575HVS-3.3/NOPB is a current-mode switch mode buck converter, which operates on PWM (pulse-width modulation) technique. It uses a feedback loop to compare the output voltage with an internal voltage reference and adjust the output voltage to keep it accurate and stable. The device is supplied with an inductor and a capacitor. When the device is turned on, current begins to flow from the input to the output via the inductor. The voltage across the inductor keeps increasing until it reaches the set output voltage. At this point, the device switches off the current, and the energy stored in the inductor is released to the output. This process is repeated at regular intervals, resulting in the output of a stable voltage. The switching frequency of the device can be adjusted to suit the requirements of the application.

Conclusion

The LM2575HVS-3.3/NOPB is a high performance switch mode DC-DC buck converter that offers high efficiency, good output voltage stability and low noise. It is ideal for a wide range of applications that require a reliable and cost-effective power solution. Its sophisticated design and wide input voltage and output voltage range make it an excellent choice for a variety of applications.

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