LM3671MFX-1.6/NOPB

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The LM3671MFX-1.6/NOPB is a synchronous, monolithic, step-down DC-DC switching regulator. It is designed to provide a cost-efficient way to achieve greater than 90% efficiency with very low external component count and a very small surface mount footprint. The device provides a fixed output voltage of 1.6V without the need for an external sense resistor.

The LM3671MFX-1.6/NOPB circuit requires only N-Channel MOSFET switches, two resistors, two capacitors and an inductor for a complete step-down DC-DC circuit. It also features a shutdown pin for power saving, as well as an enable pin for further efficiency gains through reduced quiescent current.

The LM3671MFX-1.6/NOPB uses a constant-frequency PWM current mode control architecture to provide a fast transient response and excellent line and load regulation at switching frequencies from 200kHz to 1.2MHz. The device has a wide input voltage range from 5V to 38V and can deliver up to 1.4A of output current. It also comes with built-in thermal protection, overvoltage protection, and undervoltage lockout.

The LM3671MFX-1.6/NOPB is intended for a wide range of applications, including power supplies for industrial, automotive, and consumer electronic devices. The device can be used as either a standalone step-down regulator or in a combination with other power management elements to build more complex DC-DC solutions. The device is available in a space-saving 16-pin QFN package and has an operating temperature range from -40°C to 125°C.

The LM3671MFX-1.6/NOPB has a simple and reliable working principle. The device has two N-Channel MOSFETs that switch at a high frequency, thereby converting one DC voltage to another. A transformer is used to store energy from the input voltage which is then released to the output as the switching frequency increases. The device also has a PWM current-mode control circuit which ensures that the buck converter operates in a continuous and highly efficient manner. The device can also be programmed to provide optimal power efficiency for both the step-up and step-down stages.

The LM3671MFX-1.6/NOPB is a versatile and efficient DC-DC solution and is ideal for applications where space and power efficiency is a priority. Its PWM current-mode control circuit is an ideal solution for achieving high efficiency over a wide input voltage range, while its simple and reliable design makes it suitable for a wide range of applications.

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