LP2987IM-3.2/NOPB

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LP2987IM-3.2/NOPB is a Linear Voltage Regulator used in the Power Management Integrated Circuit (PMIC) market. This voltage regulator is a member of the OPA2987 series of low-noise, low-dropout linearvoltage regulators. It is capable of providing up to a 3.2V output, and has a 250 mV dropout voltage. This voltage regulator has a high power supply rejection ratio of 70 dB and a low ground bias current of 10 μA, which makes it suitable for use in noise sensitive applications.

The LP2987IM-3.2/NOPB is designed for a wide range of input voltages spanning from 4.3V to 18V. It is capable of supplying up to 3A of output current, making it suitable for powering low-noise analog or digital circuits. The device features an adjustable output voltage — the output voltage is set by an external resistor (R1) connected between VOUT and GND. The output voltage is equal to VIN multiplied by (1+R1/R2), with R1 and R2 being preset within the device. This adjustable output feature of the device allows for simple, accurate, and cost-effective adjustment of the output voltage.

The LP2987IM-3.2/NOPB has a high power supply rejection ratio (PSRR) of 70 dB, making it suitable for use in applications where it is important to reduce power supply fluctuations. The device also features a low ground bias current of 10 μA, which minimizes the error voltage across the output voltage when noise and temperature variations occur. The device also features a temperature range of –40°C to 125°C.

Due to its high PSRR, low ground bias current, and wide temperature range, the LP2987IM-3.2/NOPB is suitable for a wide range of applications, including mobile devices, automotive, consumer electronics, communications infrastructure, aerospace and defense, and medical devices.

The LP2987IM-3.2/NOPB works by using a pass transistor that is regulated by a comparator. The pass transistor will switch ON or OFF depending on the voltage on the comparator output. When the voltage on the comparator output is above a threshold level, the pass transistor is switched ON, which allows the current to flow from the input to the output. When the voltage on the comparator output is below the threshold level, the pass transistor is switched OFF, which stops the current from flowing from the input to the output. By controlling the current in this manner, the LP2987IM-3.2/NOPB is able to regulate the output voltage.

The LP2987IM-3.2/NOPB is well-suited for a wide range of applications in the PMIC market due to its adjustable output voltage, high PSRR, low ground bias current, and wide temperature range. Its low noise and low dropout performance make it ideal for powering low-noise analog or digital circuits.

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