LM2694MTX/NOPB

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The LM2694MTX/NOPB voltage regulator is a high-performance switch-mode DC-DC regulator with a variety of functions and features, making it an ideal choice for a wide range of applications. The regulator has an ultra-wide 4.5V to 42V input voltage range and can deliver up to 3A of continuous output current. It features adjustable switching frequency and includes current-limit, under-voltage lockout, and over-temperature protection. The regulator is available in both a surface-mount and through-hole package.

Application Field

The LM2694MTX/NOPB voltage regulator is suitable for a wide range of applications including LED lighting, power supplies and converters, variable frequency drives, motor control, battery systems, and charging systems. It is also an ideal choice for automotive, telecommunications, and other applications where an efficient, low-noise voltage regulator is required.

Working Principle

The LM2694MTX/NOPB voltage regulator uses a switching regulator topology that consists of an input stage and an output stage. The input stage includes a switch, an inductor, a diode and a capacitor. The switching regulator operates based on the principle of inductor current commutation. During the switch on-time, the inductor current increases, and during the switch off-time, the inductor current decreases.

The output stage consists of an output capacitor, a Schottky diode, and an output voltage regulator. The output voltage regulator monitors the output voltage, and the inductor current is used to adjust the duty cycle of the switch. It also compensates for line voltage variations and output load variations. The output capacitor filters out the switching frequency and reduces the noise and ripple in the output voltage.

The inductor also helps to reduce the power losses associated with the switching regulator. Energy is stored in the inductor during the switch-on time, and it is released in the form of output voltage during the switch-off time. This helps to reduce the power dissipation in the switch and maintain a high efficiency.

The LM2694MTX/NOPB voltage regulator also includes a programmable frequency which allows the user to adjust the operating frequency to suit their application. The higher the switching frequency, the higher the efficiency, but it also causes greater EMI. The user can also adjust the duty cycle of the switch, allowing for a wider input voltage range.

The LM2694MTX/NOPB voltage regulator also includes current-limit, under-voltage lockout, and over-temperature protection. These protection features help protect the device from damage in case of an overload or other fault condition.

Overall, the LM2694MTX/NOPB voltage regulator is an ideal choice for a wide range of applications. It features a wide input voltage range, a programmable operating frequency, adjustable duty cycle, and various protection features. It is available in both a surface-mount and through-hole package.

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