LM2673T-5.0/NOPB

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The LM2673T-5.0/NOPB is a member of the\'switch-mode DC/DC converter family\' and is one of many power management integrated circuit (PMIC) components used in the efficient conversion of DC or AC power into the specific voltages used in digital and analog circuits. Specifically, this device is a non-synchronous, buck topology (step-down) voltage regulator that outputs a regulated 5 volts from an input range of 4.5 to 18 VDC.

This component is an integral part of many electronic designs which rely on an efficient and robust power source. For example, PCBs for an embedded system or a single-board computer will often incorporate an LM2673T-5.0/NOPB to convert the main voltage supply into a suitable 5V rail for the system.

The main components of the LM2673T-5.0/NOPB is the internal power switch, an inductor and a capacitor. The switch is an internal MOSFET transistor, which is controlled by an onboard, low-power motor driver - allowing it to rapidly switch ON and OFF, while the inductor is typically a miniature air-core component, which stores and releases energy in the form of a magnetic field.

The basic principle of the LM2673T-5.0/NOPB is to regulate an incoming voltage - when higher than 5 volts - to a fixed, regulated 5 volts. The switch is rapidly cycled ON and OFF at an adjustable frequency, allowing the inductor to periodically discharge or absorb energy. The output voltage is measured and compared against the voltage setpoint and any necessary adjustments are made to the switch timing. This process, known as pulse width modulation (PWM), is repeated continuously, thus maintaining a steady output, regardless of changes in input voltage or load.

The particular advantages of the LM2673T-5.0/NOPB include a wide input voltage range and a low quiescent current of typically less than 850N (less than 1 mA). It also has a selectable loop compensation for accurate output voltage control and a low frequency (50kHz) operation option. The device is very efficient in its power conversion and typically achieves at least 85% efficiency at full load.

The LM2673T-5.0/NOPB is a versatile and reliable component, capable of providing a steady output voltage in many types of devices. Its wide input voltage range, low quiescent current, selectable loop compensation and efficiency make it suitable for a variety of applications and can easily be incorporated into modern electronics designs.

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