LP3981ILD-3.0/NOPB

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The LP3981ILD-3.0/NOPB is a Linear Voltage Regulator (LVR) manufactured by Texas Instruments. This device is part of the LP3981 family of low-dropout regulators and offers a wide range of features, including a wide input voltage range of 2.6V to 12.5V, an adjustable output voltage ranging from 2.3V to 12.5V, a guaranteed maximum output dropout voltage of 0.1V, and a guaranteed maximum quiescent current of 2.2mA. It also offers excellent regulation performance and short-circuit protection capabilities.

The LP3981ILD-3.0/NOPB is a low-power, low-dropout regulator that is suitable for a wide range of applications, including industrial, automotive, medical, and high-precision instrumentation applications. This device provides excellent power supply stability and robust protection features, making it an ideal choice for critical systems. It is also able to provide reliable performance in environments with high temperature and electrical noise.

The LP3981ILD-3.0/NOPB features a high power-supply rejection ratio, which allows it to reject power supply noise, a wide output voltage range, and a low temperature coefficient of approximately 1mV/˚C. It also has an enable function and undervoltage lockout (UVLO) protection, which helps prevent the device from operating when the supply voltage is below the UVLO threshold. Additionally, the LP3981ILD-3.0/NOPB has an internal soft start circuit and an overtemperature protection circuit.

The LP3981ILD-3.0/NOPB utilizes an error amplifier, a voltage reference, an external N-channel MOSFET, and an undervoltage lockout circuit to regulate the output voltage. The input voltage is applied to the device’s input pins, and the external MOSFET is used to provide current to the output. The error amplifier compares the output voltage to the internal reference voltage and adjusts the duty cycle of the external MOSFET accordingly to achieve regulation. The output voltage is then adjusted by adjusting the current of the MOSFET. The LP3981ILD-3.0/NOPB’s low-dropout design allows the device to maintain a tight voltage regulation even at low input voltages, allowing for greater design flexibility when working with low voltage sources.

In conclusion, the LP3981ILD-3.0/NOPB is an excellent Linear Voltage Regulator (LVR) device from Texas Instruments that features a wide input voltage range, adjustable output voltage, a low maximum-dropout voltage, and a low quiescent current. It also has excellent protection and regulation features, making it suitable for a wide range of applications. It is a reliable and easy-to-use device that is capable of providing excellent performance in environments with high temperatures and electrical noise.

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