LP2980IM5-ADJ

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Introduction to LP2980IM5-ADJ

The LP2980IM5-ADJ is a precise, adjustable low-dropout linear voltage regulator from Texas Instruments. It is designed to provide precise voltage regulation for any system, with a wide range of operating input voltage and output load current. It is ideal for applications in mobile and battery powered systems, where precise voltage regulation and low current consumption are key requirements. With its adjustable output voltage range of 1.1 V to 5 V in 0.1 V increments, the LP2980IM5-ADJ can be used in a wide range of applications, including those requiring either a fixed or adjustable output voltage.

Application Field

The LP2980IM5-ADJ has a wide range of applications, ranging from consumer and communications products, to automotive systems and industrial automation systems. It is suitable for powering a variety of low power components, such as low voltage microcontrollers, general purpose digital and analog ICs, LED drivers, etc. Additionally, its low dropout voltage, low quiescent current, and adjustable output voltage range make it suitable for use in battery powered portable devices.

Working Principle

The LP2980IM5-ADJ is a linear voltage regulator, meaning it uses a low pass filter and an error amplifier to maintain an output voltage by correcting the difference between the reference voltage and actual output voltage. The error amplifier is driven by an external feedback voltage, and then drives the pass element, which is a MOSFET, in order to adjust the output voltage. The low pass filter is a series of RC elements that filter out high frequency noise, and the MOSFET is a low-power switch controlled by the error amplifier, allowing the pass element to adjust the output voltage.

Advantages

Some of the key features the LP2980IM5-ADJ provides are high accuracy, low dropout voltage, low quiescent current, adjustable output voltage and low noise. The device is also designed with a low impedance voltage reference (TCR = +-0.2%), low thermal resistance (15 mΩ internal MOSFET) and a programmable over-current protection. These features make the LP2980IM5-ADJ suitable for powering a variety of low power components, especially in mobile and battery powered systems.

Conclusion

The LP2980IM5-ADJ is a precise, adjustable low-dropout linear voltage regulator from Texas Instruments suitable for a wide range of applications requiring either a fixed or adjustable output voltage, including those requiring low power consumption or precision voltage regulation. Its high accuracy, low dropout voltage, and low quiescent current make it an ideal choice for mobile and battery powered systems.

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