L4940D2T10-TR Integrated Circuits (ICs)

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The L4940D2T10-TR is an ultra-low Dropout (LDO) linear voltage regulator with an output voltage of 2.5 V that is ideally suited for use in portable applications. This device offers a wide operating temperature range of -40°C to +125°C and consumes extremely low quiescent current, making it an ideal choice for battery-powered systems. In addition, the L4940D2T10-TR has an adjustable output voltage from 2.5 V to 5 V and is capable of supplying 180 mA of output current.

The L4940D2T10-TR is part of a family of linear voltage regulators that are designed to provide high precision regulation in a variety of applications. The L4940D2T10-TR has a maximum dropout voltage of 110 mV, making it one of the lowest dropout linear voltage regulators available. This allows the device to maintain its output voltage even when the input voltage is slightly below or above the desired output voltage. Additionally, the L4940D2T10-TR has a low output voltage noise of 0.05 mV rms and can operate from a wide input voltage range of 3.0 V to 5.5 V.

As with most linear voltage regulators, the L4940D2T10-TR uses a series pass transistor to achieve its regulation. When the voltage across this transistor is insufficient to keep the output voltage regulated, current is diverted through the sense resistor and error amplifier, which then adjusts the output voltage to the desired level. This process occurs continuously as the output voltage of the regulator increases from no load to full load.

The L4940D2T10-TR also utilizes current limiting and thermal protection to ensure safe and reliable operation of the device. The current limit protection is designed to limit the output current in the event of an unexpected load increase, while the thermal protection will shut down the device if the junction temperature exceeds its maximum operating threshold.

Overall, the L4940D2T10-TR is an excellent choice for applications requiring prolonged operation in harsh environments. The device\'s low quiescent current, high precision output voltage regulation and wide operating temperature range make it ideal for battery powered portable applications such as cellular phones, PDAs, digital cameras, and media players. With its low dropout voltage and excellent protection features, the L4940D2T10-TR is a reliable and cost-effective solution for voltage regulation in a wide range of applications.

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