LP2985AITPX-2.7/NOPB

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LP2985AITPX-2.7/NOPB is a voltage regulator, which belongs to the PMIC - Voltage Regulators - Linear category. Voltage regulators are commonly used to regulate the output voltage of a power supply to a range suitable for the downstream application. The LP2985AITPX-2.7/NOPB is an adjustable low dropout voltage regulator, which offers both precision and low power dissipation.

Application Field of LP2985AITPX-2.7/NOPB

The LP2985AITPX-2.7/NOPB Voltage Regulator from Texas Instruments is ideal for powering portable applications and other applications requiring low-power, low-dropout performance. The device operates over a wide input voltage range of 2.2 V to 6 V and is capable of delivering up to 200 mA of output current. LP2985AITPX-2.7/NOPB voltage regulator offers adjustable output voltage ranging from 1.25 V to 5.5 V.

The LP2985AITPX-2.7/NOPB is a high-performance IC that can be used in a variety of applications such as general purpose power management, battery monitoring, portable audio amplifiers, Bluetooth modules, and low-power portable computing devices. The device is particularly suitable for applications that require precise control of the output voltage and low Quiescent Current (IQ) operation.

LP2985AITPX-2.7/NOPB Working Principle

LP2985AITPX-2.7/NOPB works on the principle of feedback regulation. In this control mode, the voltage developed across a resistor divider is fed back to the non-inverting (positive) input pin of the regulator. The controller compares the output voltage to the reference voltage and varies the current, allowing the output voltage to remain constant.

The LP2985AITPX-2.7/NOPB consists of an error amplifier, a voltage reference, a current limiter, and a MOSFET pass transistor. The error amplifier provides the needed feedback and regulation between the output and reference voltages. A band-gap voltage reference provides a voltage reference for the error amplifier, and a current limiter prevents output current from exceeding its specified limit. The MOSFET amplifier is used to regulate the output voltage. It consists of an extremely low threshold voltage N-channel MOSFET, connected as a "common-drain"/source follower. It is designed to provide ultimate output impedance and low output noise.

The LP2985AITPX-2.7/NOPB regulates the output voltage with very low quiescent current draw (IQ) and excellent line and load regulation performance. It also offers fast transient response and precision output voltage accuracy. It also features thermal protection, which ensures the device is not damaged in the event of overheating.

Conclusion

The LP2985AITPX-2.7/NOPB is an adjustable, low-dropout voltage regulator ideal for managing power in portable applications. It works on the principle of feedback regulation and offers excellent accuracy, low power dissipation, and fast transient response. It is suitable for use in a wide range of applications such as general purpose power management, battery monitoring, portable audio amplifiers and low-power portable computing devices.

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