LM2940IMP-15/NOPB

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Voltage regulators, also known as linear regulators, are designed to maintain a constant voltage level regardless of changes in output or input current. The LM2940IMP-15/NOPB is a high-performance low-dropout (LDO) voltage regulator with an operating input voltage range of 4.5V to 40V. It features a guaranteed output voltage of 15V, a quiescent current of 130uA, and a fast transient response of the output voltage. It is an ideal choice for automotive, industrial, and consumer applications that require stable, high-performance circuitry.

Features

The LM2940IMP-15/NOPB is a 3-terminal adjustable regulator that features adjustable output voltage with a range from 1.2V to 15V. It features a fixed output voltage of 15V, low dropout voltage, a wide operating temperature range, and low quiescent current. Other features include over-temperature protection, over-voltage protection, under-voltage protection, and overload protection. It has a high ripple rejection of 82dB and a 132.5kHz switching frequency.

Application fields

The LM2940IMP-15/NOPB can be used in various applications including automotive, industrial, and consumer systems. It is suitable for any application that requires high-performance operation in low-dropout voltage regulation. It can be used in motor control, communication systems, and power supplies, as well as in automotive audio systems, digital power supplies, and voltage-sensitive logic circuits. It can also be used for general-purpose voltage conversion and low-dropout voltage-controlled power supplies.

Working principle

The LM2940IMP-15/NOPB is an adjustable low drop-out, adjustable output positive voltage regulator. The output voltage can be adjusted from 1.2V to 15V. It has an internal current-limiting, short-circuit protection, transient protection, and overload protection. The circuit is designed to maintain constant output voltage, regardless of the input voltage.

The LM2940IMP-15/NOPB is a voltage-mode control, three-terminal, switch-mode device that uses a 1.2V to 15V external reference and a fixed threshold voltage of 1.5V. The output voltage is controlled by the voltage on the voltage references pin, which monitors the output voltage. The output voltage is regulated by comparing the voltage reference with a 1.5V reference. When the output voltage drops below 1.5V, the internal switch is turned on and current begins to flow. As the output voltage increases, the feedback circuit will turn off the switch and current stops flowing, maintaining a constant output voltage.

Conclusion

In conclusion, the LM2940IMP-15/NOPB is a high-performance, low-dropout voltage regulator that is suitable for automotive, industrial, and consumer applications. It is designed to maintain a constant output voltage and is equipped with various protection mechanisms such as over-voltage protection, under-voltage protection, and overload protection. The LM2940IMP-15/NOPB is a switch-mode device that uses an external reference and a 1.5V reference to regulate and maintain a constant output voltage.

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