LT1072CS8#PBF

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The LT1072CS8#PBF is a low drop-out Positive voltage regulator which is categories under PMIC - Voltage Regulators - DC DC Switching Regulators. It is a monolithic plastic power regulator specifically designed to provide positive(-ve) regulation with the output voltage adjustable between 1.2V to 20V. It is a three terminal device with two given input pins one of which is the input voltage supply and other is the ground pin. The third pin is the output voltage pin and can be adjusted by varying the voltage across the Adjust pin. It offers improved AC/DC characteristics with ripple rejection at greater than 72dB. It has a wide supply range of 2.4V – 40V and can supply an output current up to 150mA single output or 250mA dual output (<0.1% line and load regulation). This regulator further delivers a high PSRR of better than 50dB at 1KHz. It has a low dropout voltage of 520mV. It comes in 8 pin TO-220 package providing a full protection using the Reverse-battery protection and over-temperature protection feature.

The primary application field for LT1072CS8#PBF is in automotive, general electronics, 5V USB, and mobile phones along with industrial applications such as test and measurement, medical equipment, industrial instrumentation, supervisory systems, data acquisition systems and many more. We can also find application in regulated power supplies to supply power to CPUs, audio amplifier, LCD display and LED driver.

Working Principle: The LT1072CS8#PBF device is a low drop-out Positive Voltage Regulator. It operates with inputs ranges from 2.4V to 40V and will regulate an output voltage with an accuracy of ±2.5% with values up to 20V. The device operates on the principle of providing regulating voltage by the use of linear circuitry in the form of a pass transistor and a voltage reference. When the output voltage falls below the regulation point, the device will start to increase the current flow, thus compensating for the drop in output voltage. This process is continued until the output voltage reaches the regulation point. The regulation point is then maintained as long as the input voltage and load current remains constant. The features like Reverse-battery protection and over-temperature protection further protect the device from damage due to external conditions.

The LT1072CS8#PBF is the ideal device for applications requiring highly efficient, low drop-out, regulated outputs of accurate voltages with a wide operating range, low quiescent current and excellent performance against temperature and load variations.

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