LT1129CT-3.3#PBF

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LT1129CT-3.3#PBF is a precision three-terminal regulator with a unique combination of features and performance. The regulator is designed to provide an adjustable positive output voltage from an input voltage of up to 35 Volts. It can source up to 250mA with current-limiting protection, over-temperature shutdown, and a maximum line and load regulation of 0.2%. With a temperature coefficient of 0.01%, this regulator can maintain accuracy at temperatures as low as -55°C and as high as 140°C.The LT1129CT-3.3#PBF is a power management integrated circuit (PMIC) which is used to regulate the voltage of a power supply, usually to a specific value. The most commonly used type is the linear voltage regulator which is used to keep the output voltage of electrical equipment constant, no matter what the input voltage or load changes. Using a voltage regulator helps to limit the amount of current drawn from the power source and also reduces the effects of noise or ripple on the power supply.The LT1129CT-3.3#PBF is a low-dropout (LDO) linear voltage regulator that provides an adjustable output voltage between 2.7V and 3.6V. It operates at a maximum input voltage of 30V and is capable of delivering up to 250mA of output current. It is designed to deliver low-noise power supply solutions with fast transient response performance. Its 0.2% maximum line and load regulation and 0.01% temperature coefficient ensures good output accuracy and stability over temperature and load changes.The LT1129CT-3.3#PBF has several features that make it suitable for use in a wide range of applications. The low dropout voltage (2V) makes it ideal for battery-powered applications. It also includes short-circuit protection and thermal protection with temperature monitoring at the output. The thermal shut-down feature is capable of complete reverse current protection.The LT1129CT-3.3#PBF features an input-to-output differential of 2V, making it suitable for use with low output voltage applications. The device is equipped with a series resistor between the regulator and the load, which acts as a “bleeder” to reduce power losses across the regulator. The LT1129CT-3.3#PBF is offered in a SOT-23-5 package and is also available with an external diagram.The working principle of the LT1129CT-3.3#PBF is based on the fact that a fixed voltage is established across a resistor if a voltage divider is used with two resistors of a specified ratio. This fixed voltage is proportional to the input voltage, and thus can be used to control the output voltage. When there is a change in the input voltage, the output voltage is regulated automatically.The device consists of an input buffer, error amplifier, and output driver. The input buffer consists of two N-channel MOSFETs, which bring the input voltage to the reference voltage. The error amplifier compares the reference voltage with the output voltage and converts it into an error signal. This signal is then sent to the output driver, which controls the MOSFETs to adjust the output voltage.The LT1129CT-3.3#PBF is a great choice for applications requiring low noise and fast transient response. Its low dropout voltage and high input voltage capability makes it suitable for battery-powered devices. The 0.2% line and load regulation, 0.01% temperature coefficient, and fast transient response can help ensure reliable and accurate performance in a wide range of applications.

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