LP3853ET-1.8

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The LP3853ET-1.8 is a Linear Voltage Regulator (LDO) in the PMIC or Power Management IC family. It is designed to provide overwhelming system protection, and exceptional power supply design flexibility by providing up to 1.8A of continuous current. The LP3853ET-1.8 is a low-dropout (LDO) linear regulator providing accurate and fast transient response, making it an ideal solution for power supply design applications that require accurate voltage regulation. It is also capable of providing up to 1.8A of output current, making it a great choice for applications where high-currents are needed.

The primary purpose of the LP3853ET-1.8 is to provide an adjustable output voltage source that can deliver a precise voltage to an application. The LP3853ET-1.8 device is part of a series of LDOs, with fixed output voltage options available, as well as one adjustable option. The adjustable option is the LP3853ET-1.8, offering an adjustable output range of 1.8V to 6.5V. This feature allows for design flexibility and enables the user to adjust the output voltage to the needs of the application without requiring additional components.

The LP3853ET-1.8 is a low-dropout linear regulator with a low quiescent current, allowing for greater system efficiencies. It is designed to maintain precise output voltage tolerance over its operating temperature range, with a preset output accuracy of ±1.0%. This feature allows for exceptionally precise voltage regulation over time, ensuring that the device is able to meet the needs of the application. The device includes a low-current shutdown feature, allowing the user to power-down the regulator when it is not in use.

In addition to its precise voltage accuracy, the LP3853ET-1.8 also features a wide operating temperature range of -40°C to 125°C, allowing it to function in extreme environmental conditions. The device also includes over voltage protection and short-circuit protection, providing robust system protection. This protection is especially important in high-humidity or high-temperature applications, where the environment could potentially cause issues with the system.

The LP3853ET-1.8 operates by providing a linear pre-regulating of the input voltage, followed by a series of bi-directional anti-parallel MOSFETs for output voltage regulation. The bi-directional MOSFETs are controlled by a single resistor, which sets the output voltage. This allows the device to maintain the desired output voltage regardless of input voltage variations. The bi-directional MOSFETs also provide thermal current limit protection, ensuring that the device is not pushed beyond its power limits.

The LP3853ET-1.8 is an excellent choice for a wide range of applications, from low-power IoT devices to industrial applications. It offers high-efficiency and precise voltage accuracy, allowing for reliable operation in extreme environments. Additionally, its robust protection features and low quiescent current enable it to be used in safety-critical applications, allowing users to have the confidence that their design will remain reliable for years to come.

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