LP8340ILD-3.3/NOPB

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Linear regulators are a type of PMIC that is used to control, reduce and modify the output voltage from one power source to another in order to provide the exact voltage level and current that are required by a device. The LP8340ILD-3.3/NOPB, which is a low dropout (LDO) linear regulator with 3.3V fixed output voltage and 30 mA maximum output current, is one such PMIC.

This linear regulator is ideal for applications that require low power, low noise, and fast transient response. It has low EMI, low quiescent current, wide input voltage range of 2.17 V to 5.5V and is capable of providing high PSRR of 70 dB at 1 kHz. It is also RoHS and AEC-Q100 compliant, making it suitable for automotive systems as well.

The working principle of linear regulators is relatively simple to understand. In its simplest form, the regulator operates by maintaining a voltage reference across its input and output pins, and adjusting the resistance between the two points in order to maintain a constant output voltage. The resistance is adjusted by varying the amount of current flowing through a “control element”, which can be a field effect transistor (FET), bipolar transistor, or even a depletion mode MOSFET.

Once such current begins to flow, it shapes into a closed loop, forming a “Feedback” circuit. The control element acts as a variable resistor, controlling the voltage drop across its pin, while the output current helps form the feedback loop. In this way, the output voltage remains constant, regardless of changes in the input voltage, the output load, or operating temperature.

The LP8340ILD-3.3/NOPB is a low noise LDO regulator, which means that its output noise is less than 15 uV RMS over a 10 Hz to 100 kHz bandwidth for medium and high load currents. It also features thermal shut-down protection and over-temperature protection, making it suitable for a wide range of applications. The package types available are SOT23-5 and TSOP-5, making it easy to use in tight spaces or limited PCB area designs.

In conclusion, the LP8340ILD-3.3/NOPB is a high performance, low noise linear regulator with wide input voltage range and low dropout voltage. It is suitable for a wide range of applications that require accurate and stable output voltages, such as automotive systems, consumer electronics, and space applications. The wide range of features, along with its small form factor, makes the LP8340ILD-3.3/NOPB an ideal choice for modern design projects that require low power and efficient operation.

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