LP8900TLE-AAAH/NOPB

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The LP8900TLE-AAAH/NOPB is a product of Texas Instruments, and is a member of the PMIC - Voltage Regulators - Linear family. The device is a low current output, 3-terminal linear regulator, offering customers a range of input voltage and various output currents. This versatile device has many benefits, as well as some notable applications.

Features

The device offers superior line/load noise rejection ratio and excellent thermal stability. It is offered in output current range of 0.1mA to 500mA and input voltage of 0.6V to 6V. The device features an enable pin that can be disabled to reduce the current consumption of the device. Additional features include an output voltage accuracy of +/- 2.1%, output current monitor that can detect an overload of the output current, and overvoltage protections.

Applications

The LP8900TLE-AAAH/NOPB has a wide range of applications due to its versatile features. It is commonly used in cellular phones, laptops, and other portable electronic devices. It is also used in LED lighting and LED displays, where it is used to drive lighting LEDs while ensuring efficient current distribution and voltage accuracy. Additionally, the device is used in medical and aviation applications, where the existing and required safety standards must be met, and can be used in automotive infotainment devices.

Working Principle

The working principle of the LP8900TLE-AAAH/NOPB is based on the typical linear regulator topology. The device consists of a three-terminal regulator and an internal error amplifier. The input voltage is applied to the regulator, and the error amplifier has a feedback control loop that controls the output voltage. The output voltage is the difference between the input voltage and a voltage drop across the load resistor.

The error amplifier compares the output voltage with a reference voltage and adjusts the output accordingly. If the output voltage goes above the reference value, the error amplifier increases the resistance of the load resistor so that the voltage is reduced. Similarly, if the output voltage goes below the reference value, the error amplifier decreases the resistance of the load resistor so that the voltage is increased. This ensures a stable and accurate output voltage.

Conclusion

The LP8900TLE-AAAH/NOPB is a versatile device due to its wide range of input voltage and output current, as well as its superior line/load noise rejection ratio and excellent thermal stability. It is used in many applications, such as cellular phones, laptops, LED lighting and LED displays, medical and aviation applications, and automotive infotainment devices. The working principle of the device is based on the typical linear regulator topology, where an internal error amplifier adjusts the output voltage according to a reference value.

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