LT1764AET-1.8#PBF

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LT1764AET-1.8#PBF Application Field and Working Principle

The LT1764AET-1.8#PBF is a high-performance, low-noise, low-dropout linear regulated (LDO) voltage regulator with a very low quiescent current. LT1764 is suitable for a wide variety of applications, including PCs, tablets, servers, and cellular phones. This device is an adjustable type device, which means that its output voltage can be adjusted within the range of 1.25 V to 5.5 V by adding an external resistor divider to the SET pin. It also features a wide input voltage range, short-circuit protected output, a fast transient response, and low output voltage noise.

Application Field

The LT1764AET-1.8#PBF is well suited for a variety of applications, including power management for high-speed data converters, noise reduction in digital circuitry, post-regulator for higher voltage supplies, low-voltage regulation, battery-backed supplies, and microprocessors and DSPs. It is also suitable for various industrial and consumer electronics applications, such as portable electronics, instrumentation and test equipment, automotive applications, networking switches and routers, and medical instrumentation.

Working Principle

The LT1764AET-1.8#PBF regulator consists of a voltage reference, a control amplifier, and a power pass transistor. Under normal operation, the control amplifier compares a reference voltage to the voltage applied to the SET pin. The output voltage (V out) is set to the correct value and remains constant, independent of load, line, or temperature variations. In order to maintain the output voltage, the control amplifier adjusts the duty cycle of the power pass transistor to maintain the desired output voltage. Apart from the SET pin, the device also includes a SHDN pin which allows the user to turn the device off, saving power and reducing system noise. The LT1764 is a low-dropout device, meaning that the input voltage can be substantially lower than the output voltage, making it suitable for powering sensitive digital circuits.

In summary, the LT1764AET-1.8#PBF is a high-performance, low-noise, low-dropout linear voltage regulator suitable for a wide variety of applications. Its low quiescent current draws minimal power, making it an ideal choice for power management applications. It has a wide input voltage range, a fast transient response, and a low output voltage noise. It also has a SHDN pin to reduce system noise and enable power savings.

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