LP2985IM5-2.9

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PMIC or power management integrated circuits are semiconductor integrated circuits designed to manage multiple power supply sources that provide power to an electrical system or to segments of an electrical system. PMICs usually control and monitor other parts of the power supply system and function to improve the overall system performance. LP2985IM5-2.9 is a low dropout, low noise, low voltage linear regulator designed to work within microprocessor systems and other critical low noise, low power applications.

Applications:

LP2985IM5-2.9 is suitable for applications such as local on-card regulation, portable and battery operated systems, as well as digitized voice, data and industrial control applications which require extremely low output voltage at high current. It is suitable for powering memory, microprocessors, ASICs and other critical components requiring priority supply of regulated output voltage with fast transient response, very low dropout and low noise. Some of the applications of LP2985IM5-2.9 are cellular phones, desktops and notebooks PDAs, LCD displays and portable instrumentation.

Working Principle:

The working principle of LP2985IM5-2.9 is a linear voltage regulator. It has two voltage terminals, one connected to the input side and other connected to the output side. When power is applied to the VIN terminal, the internal circuitry of LP2985IM5-2.9 detects the voltage drop across it and applies a certain amount of load on the input voltage to regulate the output voltage to the required level. The required level of output voltage is governed by a set of resistors which control the reference voltage. The internal circuitry of LP2985IM5-2.9 consists of a sensing circuit, an error amplifier, a voltage reference and an output driver. The sensing circuit compares the output voltage to the reference voltage and signals the error amplifier when the output voltage is higher or lower than the required voltage.

The error amplifier then amplifies the signal and drives the output transistor, which is connected to the output terminal. The output transistor functions as a switch and controls the amount of current flowing through the load. The output transistor is also connected to a transistor in the voltage reference, which ensures that the reference voltage is maintained at a certain level. Thus, the voltage reference maintains the desired output voltage as long as the input voltage is above the dropout voltage of the LP2985IM5-2.9.

LP2985IM5-2.9 is designed to have low off-state current, low output noise and fast response time to transient load changes. It has a low dropout voltage, so it can regulate output voltages that are close to its input voltage. It also has an output disable pin, which allows it to shutdown the output voltage when not in use. Its input voltage range is from 2.7V to 5.5V and its output voltage range is from 1.2V to 5V.

LP2985IM5-2.9 is used in a variety of applications in the consumer and industrial markets. Its low drop-out and low noise make it ideal for low power and low noise applications such as cellphones, notebook computers, personal digital assistants and LCD displays. Its fast response time and wide input voltage range also make it suitable for automotive and industrial applications.

LP2985IM5-2.9 is a robust, reliable and low power linear regulator designed for use in demanding low noise, low power systems. It is capable of maintaining low output voltage with high accuracy and low noise, making it an ideal solution in many applications.

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