LTC2977CUP

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Analog Devices’ LTC2977CUP power supply controllers, monitors are widely recognized as one of the most important components in power management applications. This device is recommended for use in applications where fast negotiations and setting of the power supply limits are required.

This power supply controller offers highly integrated and programmable power supply monitoring and limiting capabilities in a 38-pin castellation MSOP-38 package. Based on a combination of low operating power use and highly integrated feature set, the LTC2977CUP offers superior overall performance.

The application field of LTC2977CUP is mainly in mixed-signal devices or systems powered from different sources. These include systems powered from automotive and industrial power sources including 12V, 24V and 48V sources. The devices can also be used in portable devices running from a single voltage rail.

The LTC2977CUP consists of an advanced digital controller and a high-side power switch. The digital controller contains all the necessary features for detecting, limiting and reporting the voltage, current and temperature of the power supply being monitored. It also provides an adjustable voltage and current threshold set point and an optional temperature set point.

The LTC2977CUP utilizes a selectable high-side current sense scheme to accurately monitor and control the power supply’s output current, providing a wide range of protection limit settings. The device also includes an internal temperature sensor to detect overtemperature conditions and automatically shut down the power supply if the temperature exceeds the preset limit.

In addition to sensing the power supply’s output current, the LTC2977CUP also provides adjustable output power level limit settings. This allows the device to be configured to limit the amount of power delivered to a load, ensuring safe operation and preventing damage to components, as well as avoiding dangerous thermal issues.

The device’s digital controller also provides a comprehensive set of telemetry monitoring options, allowing it to continuously monitor the state of the power supply and report any abnormalities. This includes monitoring of over-voltage, under-voltage, short circuit, and over-temperature conditions.

For output current limiting, the LTC2977CUP provides adjustable power- and temperature-dependent limit settings. This allows the device to be configured to limit the amount of power delivered to a load, ensuring safe operation and preventing damage to components, as well as avoiding dangerous thermal issues.

The LTC2977CUP also features a push-button reset system, allowing it to be safely reset after a fault condition has occurred. The device also provides a PWRGD output to indicate the power good condition of the power supply.

In conclusion, the LTC2977CUP from Analog Devices offers a high level of performance, features and flexibility for a wide range of power management applications. With its advanced features and reliable operation, the LTC2977CUP is an ideal choice for power supply monitoring and limiting applications.

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