LT1764AMPQ#TRPBF

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Introduction

LT1764AMPQ#TRPBF is a Linear Voltage Regulator and one of the products in the line of power management integrated circuit (PMIC) offered by Linear Technology. It is designed to provide a regulated current output with high efficiency, low noise and fast transient response.

Application Field

The LT1764AMPQ#TRPBF is primarily used as a system power source, providing clean voltage and current to electronic components and subsystems that are sensitive to noise and transients like A/D converters, memory, microprocessors and mixed logic circuits. Its fast transient response is ideal for applications that require fast load and line changes.

Another popular application is in automotive systems, where LT1764AMPQ#TRPBF can provide power conversion from a 12V battery to power circuits with digital devices operating from 3V to 12V. It can also be used in telecom systems to provide a clean power supply for routing digital circuits.

Working Principle

The LT1764AMPQ#TRPBF employs a voltage regulation topology that utilizes a single error amplifier and an external reference. A current Sampling Resistor (RS) is connected between Output Sense Pin and the Output Pin. The output current is sensed by an amplifier and its voltage is compared with a reference voltage.

When the output current exceeds this reference threshold, the Error Amplifier activates the Gate of a PNP transistor, regulating the current to match the reference. This regulation circuit is called the current mode control. It is able to provide fast transient response, high accuracy and reliable protection against overcurrent conditions.

The LT1764AMPQ#TRPBF also offers several protection features, such as short-circuit, overvoltage, and overcurrent protection. It also includes overtemperature and thermal shutdown protection. The LT1764AMPQ#TRPBF also includes two voltage reference circuits to provide a regulated reference voltage for other devices.

Conclusion

The LT1764AMPQ#TRPBF Linear Voltage Regulator is a versatile and reliable voltage regulation device designed for a wide range of applications in PMIC systems. It offers fast transient response, high efficiency, and low noise for the most demanding components. The LT1764AMPQ#TRPBF also provides several protection features to protect the device from overvoltage, overcurrent, and overtemperature conditions.

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