LT1737CGN#PBF

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LT1737CGN#PBF Application Field and Working Principle

The LT1737CGN#PBF is a voltage regulator manufactured by Linear Technology that belongs to the Power Management Integrated Circuit (PMIC) category, and is classified as a DC DC Switching Controller. This device is a general-purpose, adjustable positive or negative voltage regulator, designed to provide voltage level shifting, current limiting and thermal protection features.

The LT1737CGN#PBF consists of an externally adjustable bandgap reference, an amplifier, a driver stage, and a power MOSFET switch capable of handling up to 2A of current. The output voltage can be adjusted with a sense resistor or a potentiometer. The device also offers short-circuit protection, current-limit protection, over-temperature protection, and under-voltage lockout features.

Generally speaking, the LT1737CGN#PBF can be used in a variety of applications, such as consumer electronics, industrial control, medical and automotive systems. It is typically used for efficiently regulating an input voltage and providing a higher or lower output voltage, as well as for suppressing high frequency noise for improved signal integrity.

Working Principle

The LT1737CGN#PBF works by comparing the feedback voltage to a fixed voltage reference and adjusting the switching frequency until the output voltage matches the reference voltage. The feedback voltage and the reference voltage are compared with an error amplifier. When the output voltage is higher than the reference voltage, the error amplifier\'s output changes to a logic high. This logic high is then transmitted to the driver stage, which controls the gate of the power MOSFET switch. When the gate voltage is high, the drain-to-source voltage of the switch is low, allowing current to flow from the input to the output.

When the output voltage is lower than the reference voltage, the logic level of the error amplifier\'s output changes to low, and the driver stage opens the switch so that current is blocked. In this way, the output voltage is maintained at a constant level, regardless of changes in the input voltage or load.

Conclusion

The LT1737CGN#PBF from Linear Technology is a highly-efficient DC DC switching controller specifically designed for regulating an input voltage and providing a higher or lower output voltage. It is a general-purpose, adjustable positive or negative voltage regulator, featuring an adjustable bandgap reference, an amplifier, a driver stage, and a power MOSFET switch capable of handling up to 2A of current. This device can be used in a variety of applications, such as consumer electronics, industrial control, medical and automotive systems. It is typically used for efficiently regulating an input voltage and providing a higher or lower output voltage, as well as for suppressing high frequency noise for improved signal integrity.

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