LP2989ILD-3.0

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LP2989ILD-3.0 is an integrated low-voltage linear regulator chip developed by Texas Instruments. It can be used as a low-voltage, low power voltage regulator for a wide range of applications. It has a maximum current output of 1.5A and a maximum input voltage of 17V. The chip has several features that help ensure reliable operation, such as very low quiescent current, low drop out voltage, and low noise operation. In addition, the IC has protection features against overvoltage, undervoltage and ESD.

Application Field

LP2989ILD-3.0 can be used as a portable voltage regulator for powering most low voltage appliances such as smartphones, cameras, and other small devices powered by Li-ion batteries. It is also used in marine, automotive and avionic applications because of its low-power operation and low-noise performance. In addition, the low dropout voltage makes it suitable for use in harsh environments where both input and output voltages are close.

Working Principle

The LP2989ILD-3.0 works by converting a higher input voltage to a stable output voltage while at the same time maintaining a very low quiescent current. The chip has an internal voltage reference, an operational amplifier (op-amp), a feedback loop, and an error amplifier. An external voltage divider is used to set the output voltage, the error amplifier is responsible for controlling the output voltage, and the op-amp is used to amplify any changes in the output voltage. The LP2989ILD-3.0 is capable of providing a very low noise output by using its internal oscillator, so this helps to reduce the power supply noise. The low dropout voltage helps to ensure that the output remains regulated at high current loads and helps to prevent output overvoltage during a power outage.

Conclusion

LP2989ILD-3.0 is a low power, low voltage linear regulator that is suitable for a wide range of applications. It has a maximum current output of 1.5A and a maximum input voltage of 17V. The chip has several features that help ensure reliable operation, such as very low quiescent current, low drop out voltage, and low noise operation. In addition, the IC has protection features against overvoltage, undervoltage, and ESD. These features make it an ideal choice for low-voltage, low-power applications. It is also suitable for use in harsh environments because of its low dropout voltage. The LP2989ILD-3.0 is a very reliable and efficient voltage regulator that can be used for many applications.

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