LTC2901-2IGN#TRPBF

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Power Management Integrated Circuits (PMIC) are integrated circuits (ICs) that help manage the distribution, transmission and protection of power for other electronic circuits such as those found in a computer. PMICs are effective in the system level design because they integrate multiple power resources in a single chip, significantly reducing the number of external components while also providing high performance and low noise operation.

Supervisors, a class of PMICs, are meant to monitor incoming power, voltage and/or current in an electronic system, thereby ensuring that the system always operates in an intended operational mode. They provide protection against power supply faults that could otherwise damage the power system or cause misoperations.

LTC2901-2IGN#TRPBF is a power supervisor IC intended to provide protection against power rail overvoltage and undervoltage. It features programmable inputs for overvoltage, undervoltage and hysteresis, along with an adjustable watchdog timeout feature. All settings are programmable through an I2C/SMBus interface, which allows for remote monitoring, configuration and control.

The LTC2901-2IGN#TRPBF monitors incoming voltage using an analog comparator, comparing the input voltage to the reference voltage created by a combination of external resistances. The device then uses an internal open-drain driver to flag overvoltage and undervoltage when the thresholds are exceeded.

The watchdog timer feature of the LTC2901-2IGN#TRPBF is used to periodically pulse (or watch) the input voltage supply and alert if a voltage fault is detected. The watchdog timing is set via the WD_TIME pin, allowing for different timing periods depending on the application.

The LTC2901-2IGN#TRPBF also features a programmable hysteresis circuit that ensures that the undervoltage flag is not continually set off due to noise on the power supply. This feature is especially useful in applications where ripple or noise on the input voltage can cause false triggering of the undervoltage flag.

The overvoltage and undervoltage protection provided by the LTC2901-2IGN#TRPBF is suitable for a wide range of power supplies and loads, from 5V to 60V, making it ideal for systems with varying power supplies and loads. Additionally, the wide operating temperature range of the device (-40°C to +125°C) makes it suitable for harsh environment applications.

The LTC2901-2IGN#TRPBF is suitable for a variety of applications, including embedded systems, consumer electronics, automotive and industrial control systems, LED lighting, power supplies, and more. It is primarily used to monitor and protect against overvoltage and undervoltage faults, but since it is programmable via I2C/SMBus, it could also be used in applications that require remote monitoring and control.

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