LP3961ESX-2.5

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The LP3961ESX-2.5 is an integrated circuit voltage regulator used in electronics systems. It is a positive low dropout (LDO) linear regulator with an adjustable output voltage range of 1.2V to 2.5V. The device has a typical quiescent current of 1µA and a dropout voltage of only 200mV, allowing it to maintain high voltage accuracy at very low output currents. The device is designed to operate in a wide range of temperature environments, with a maximum junction temperature of up to 125°C. The LDO also includes internal over-voltage, short-circuit and thermal protection circuitry to protect the device from damage if the input or output voltages are exceeded.

The application fields of the LP3961ESX-2.5 range from consumer electronics, automotive and military applications. The device can be used for applications such as chipsets, wireless communication ICs, cellular phones, audio amplifiers, display controllers, and battery-powered systems. In automotive applications, the LP3961ESX-2.5 can be used as a DC/DC converter, a voltage reference, or a voltage monitor. In military and avionics systems, its low noise allows it to be used in high accuracy signal generation circuits and power management systems.

The LP3961ESX-2.5 employs a resistive feedback circuit to regulate the output voltage. The feedback terminal of the LDO is connected to the adjustable reference input of an error amplifier. An internal voltage divider network provides a constant output voltage. The error amplifier compares the voltage at its feedback terminal with a reference voltage and provides an output current which is proportional to the difference between the two voltages. The output current is then used to control a series of P-channel and N-channel MOSFETs to regulate the output voltage. The device includes an internal MOSFET to provide improved power handling capabilities and a low-impedance output.

The LP3961ESX-2.5 is a versatile voltage regulator with a wide range of applications. It can be used to accurately regulate the output voltage of a wide variety of circuits and systems, while providing protection from overvoltage, short circuits and temperature extremes. Its small size and low operating current enable it to be used in battery-powered systems, while its high temperature ratings make it suitable for automotive and military applications.

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