LT1963AEFE#PBF

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Overview

The LT1963AEFE#PBF is a high-efficiency, low-dropout voltage regulator that is typically used in advanced power management applications. It provides adjustable and preset output voltage levels, enabling designers to easily customize output voltage levels for a wide range of applications. It provides excellent regulation over a wide temperature range, with excellent performance in high-temperature conditions. The LT1963AEFE#PBF also features low-voltage protection, reverse voltage protection, and automatic power-down features to enable design flexibility and robustness.

Application Field

The LT1963AEFE#PBF is ideal for applications requiring a high efficiency, low-dropout voltage regulator, such as portable devices, battery-powered equipment, networking/computing systems, industrial, automotive, avionics, and medical applications. It can be used to drive low-power digital loads, such as logic, serdes, and sensors, as well as analog loads, such as DACs and ADCs. It is typically used to regulate the output voltage and current of power supplies.

Working Principle

The LT1963AEFE#PBF regulator consists of a P-channel MOSFET, an N-channel FET, an internal voltage reference, a voltage detector, and an output control circuit. When the power supply voltage exceeds a predetermined threshhold, the P-channel MOSFET is enabled. This allows current to flow from the output of the regulator to the input. The voltage at the output of the regulator is then regulated using the internal reference and the output control circuit. A resistive voltage divider is used to adjust the output voltage, and the output regulation is clamped to the internal reference voltage of the regulator.

When the input voltage exceeds the maximum rating of the regulator, the P-channel MOSFET automatically shuts down, preventing current from flowing between the input and output. In addition, the voltage detector of the regulator monitors the output voltage to detect any faults or unintended changes in the output voltage level. If the output voltage rises above the maximum safe operating level, the detector circuit shuts down the regulator, preventing any permanent damage.

The LT1963AEFE#PBF regulator also provides two protection modes, automatic power-down and reverse voltage protection. The automatic power-down mode allows for automatic power-down of the device in the event of an output voltage overshoot, reducing power consumption and increasing system reliability. The reverse voltage protection prevents any current from flowing from the output to the input of the device, protecting the circuit from potentially damaging reverse voltage conditions.

Conclusion

The LT1963AEFE#PBF is a high-efficiency, low-dropout voltage regulator. It offers adjustable output voltage levels, adjustable current protection, temperature regulation, reverse-voltage protection, and automatic power-down capabilities. It is designed to operate over a wide temperature range and is ideal for a variety of applications including portable electronics, industrial, avionics, and medical devices. Thanks to its high efficiency and robust protection features, it provides a reliable voltage regulation solution for power-critical systems.

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