LP3965ESX-1.8

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The LP3965ESX-1.8 is a linear voltage regulator designed by Texas Instruments. It is a micropower series of low-dropout (LDO) regulators which features a high power supply rejection ratio and low quiescent current. It can operate at a range of up to 1.8 V and is designed to efficiently regulate high input voltages. This makes it suitable for a wide variety of applications, including automotive, industrial, battery-powered applications and portable devices.

The LP3965ESX-1.8 provides five fixed output voltages from 1.0 V to 1.8 V, with a maximum output current of 1 A. It is optimised for low power supply rejection ratio with a maximum output noise of 40 uVrms. Its low quiescent current of only 42 uA makes it ideal for use in energy-efficient designs. The LP3965ESX-1.8 is protected from overcurrent, overtemperature and reverse-battery conditions.

The working principle of the LP3965ESX-1.8 is based on the same principles as other linear voltage regulators. It uses a series of resistors and transistors connected in a system which is referred to as a voltage dropper. The voltage dropper uses a reference voltage, typically between 1.0 and 1.8 V, as a reference point to draw current from the input supply. An internal variable resistor is connected to the reference voltage, which is controlled by an input signal. This reference voltage is compared to the output voltage and the control signal adjusts the resistance level so that the output voltage matches the reference voltage. This is repeated continuously to ensure accurate and stable regulation of the output voltage.

The LP3965ESX-1.8 is ideal for applications that require a precise, low-noise output voltage. It is well-suited for automotive, industrial, CPAP machines and other battery-powered or low-power applications. It is also used in consumer electronics such as mobile phones, laptops, tablets and other portable devices which require a regulated power supply. The LP3965ESX-1.8 can also be used in robotic systems, security systems and audio/video equipment.

The LP3965ESX-1.8 is a versatile and reliable voltage regulator that offers high power supply rejection, low quiescent current and a wide range of output voltages. It is suitable for a wide range of applications and is perfect for energy-efficient designs. Its price is also very competitive when compared to other linear voltage regulators.

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