LT1963AEST-1.5#PBF

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LT1963AEST-1.5#PBF is an advanced low dropout (LDO) three-terminal adjustable regulator. It is designed to provide small current to high current output with low dropout voltage. LT1963AEST-1.5#PBF belongs to the class of PMIC (Power Management Integrated Circuit), Voltage Regulators, Linear type.

The LT1963AEST-1.5#PBF is capable of delivering up to 1.5A of output current while maintaining a low output voltage with a low dropout voltage. With an adjustment range of 1.25V to 17V, it is suitable for regulating microprocessor core voltages. It is designed to operate at supply voltage ranging from 4.5V to 20V, making it ideal for many battery-powered applications such as portable electronic devices.

The LT1963AEST-1.5#PBF offers an efficient design with low quiescent current, high efficiency and fast transient response. It features internal current limiting and thermal shut-down protection for short circuit protection. The output voltage and current can be set with two external resistors. It also includes input/output voltage monitoring, allowing the use of the regulator as a constant-current source. The LT1963AEST-1.5#PBF also features a low output noise performance and high PSRR.

The LT1963AEST-1.5#PBF contains two power transistors connected in series. The base of each transistor is connected to its own base current device. The emitter of one transistor is connected to the base of the other. When the voltage at the input pin is higher than that at the output pin, the base current device supplies current to both bases, which causes current to flow from the input to the output. The current through the two transistors is regulated by the current-sensing output transistor. As the base current device increases its current, the current through the two transistors will drop, resulting in the output voltage decreasing.

The LT1963AEST-1.5#PBF\'s output voltage can be adjusted by varying the external reference voltage and current-sensing transistor current. It is possible to increase the current limit by pincuiting the resistor connected to the current-sensing output transistor base.

The LT1963AEST-1.5#PBF is well suited for applications such as industrial process control, RF transmitters and receivers, microprocessor power supply and post regulation of switched-mode power supplies. It is also suitable for low dropout voltage applications such as low power battery-powered systems and applications with tight voltage accuracy requirements.

In conclusion, the LT1963AEST-1.5#PBF is an ideal choice for a linear three-terminal adjustable regulator because of its small size, low quiescent current and low dropout voltage. With its low current limit and input/output voltage monitoring, it can be used in a wide range of applications.

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