LM340T-12/NOPB

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The LM340T-12/NOPB Voltage Regulator is a three-terminal positive linear regulator that can output a maximum of 12V for a wide range of input voltages up to 40V. It features the same high power and thermal capacity of the other LMxxT series ICs, and allows for a precise output voltage setting using a single external resistor and excellent line and load regulation.

The LM340T-12/NOPB is commonly used for a variety of applications, such as a secondary 12V voltage source for power supplies or a power backup for automotive, industrial, and telecom systems. It is also used as a high-precision reference generator for microcontrollers and digital signal processing circuits.

The LM340T-12/NOPB has a highly efficient design and a low quiescent current that allows it to operate with small heat sinks in a large temperature range. It has a large differential gain of 25mV at full load, making it the ideal choice for controlling output voltage in noisy applications. Furthermore, its good load and line regulation make it suited for high-end power supply designs that require precise output control.

The LM340T-12/NOPB works based on the same principles as other linear voltage regulators. It has a reference voltage which is derived from a zener diode, which is compared with the input voltage. The difference between the two is then amplified and used to control the output voltage of the regulator. This voltage is fed back to the error amplifier, and then adjusted by the zener diode to maintain a constant output voltage.

The LM340T-12/NOPB also features internal over-temperature and over-current protection, as well as short-circuit protection. It also has an output voltage margin detector, which helps in detecting the output voltage before it goes out of regulation. This feature can be used to alert the system when the output voltage is starting to drop below the design value, which can help save the system from premature failure.

The LM340T-12/NOPB is a great choice for voltage regulation in many different applications due to its high efficiency, excellent line and load regulation, high reliability, and its low quiescent current. Its combination of features and its wide input voltage range make it the ideal choice for many applications.

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