LP3985ITL-2.5

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The LP3985ITL-2.5 is a low-noise LDO (low-dropout) linear regulator IC released by the semiconductor manufacturer Texas Instruments. The part is a tiny 0.8 mm x 0.8 mm package, and is specified to be able to deliver up to 250 mA output current with an input/output voltage difference of 2.4 V at 25 °C. This part can be used to maintain operating power for all kinds of digital electronics systems. It is housed in a 2.5 x 2.5 mm QFN package which has a very low profile, making it ideal for applications with tight spacing.

The LP3985ITL-2.5 is equipped with an extensive range of features and protection functions. The short-circuit, over-temperature and over-current protection features are enabled, allowing for reliable operation in any situation. A low-noise voltage reference is included and provides 0.2 Percent accuracy, which is more stable than external references. The LP3985ITL-2.5 also features a fast transient response time and a minimum output capacitor (3.3 uF).

The LP3985ITL-2.5 device is suitable for a variety of different applications, such as automotive, industrial, consumer, portable and other general purpose applications. The device can be used in battery powered applications, as it is capable of operating with an input voltage range of 2.5 V to 5.5 V, and with excellent line regulation. Additionally, with its high output current (250mA) and low-noise feature, it is suitable for powering numerous functions in a digital system which requires a clean, stable output voltage for performance.

The working principle of the LP3985ITL-2.5 linear regulator is similar to most linear regulators. The output is regulated by a feedback loop, where an error amplifier compares the output voltage to a voltage reference. If the error amplifier determines that the output voltage is not equal to the reference voltage, the error amplifier will adjust the output of the regulator by varying the current on the pass element. The pass element is then used to control the voltage output, which helps maintain the desired output voltage. The LP3985ITL-2.5 has an output voltage range of 0.8V to 5V, and the output voltage is programmable via an external resistor.

In summary, the LP3985ITL-2.5 is a low-noise LDO linear regulator ideal for powering digital systems. Its small size allows it to fit into applications with tight spacing, and it provides excellent protection from short circuits, over-temperature, and over-current. It offers a fast transient response time and stable operation, even when powered by a battery. Finally, its working principle is similar to most linear regulators, using an error amplifier and pass element to adjust the output voltage in order to maintain the desired output voltage.

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