LM2671M-ADJ

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The LM2671M-ADJ Switching Regulator is part of National Semiconductor’s Switching Regulator family. It is a step-down switching regulator with a wide power range and adjustable output voltage. This regulator can provide up to 1.5A of load current and requires only a few external components for operation. It is designed for use in low voltage applications such as medical equipment, portable electronics, and consumer electronics.

The LM2671M-ADJ switching regulator is composed of a high-side power MOSFET switch, an adjustable reference voltage and an error amplifier. The high-side power MOSFET switch, which operates at a frequency of 300kHz, is controlled by a pulse-width modulated (PWM) signal from the on-chip error amplifier. The adjustable reference voltage is used to set the output voltage. This voltage is acquired by connecting a voltage divider to the regulator\'s REFIN pins. The error amplifier compares the reference voltage with the output voltage to determine the required duty cycle. The error amplifier then output a PWM signal with a duty cycle that is proportional to the voltage difference between the reference voltage and the output voltage.

The LM2671M-ADJ switching regulator provides an independent enable input that can be used to control the shutdown of the regulator and provide an optimized start-up configuration. The enable input is pulled low to turn the regulator off and pulled high to turn it on. The LM2671M-ADJ also provides an overcurrent protection and thermal shutdown feature that prevents damage to the regulator in the event of an overcurrent event or overheating.

The LM2671M-ADJ switching regulator is a very versatile and efficient regulator for powering low voltage applications from a fixed DC source. It provides a wide range of adjustable output voltages, an independent enable input for shutdown and start-up control and integrated protection features for safe operation.

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