LTC2945HMS#PBF

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LTC2945HMS#PBF Application Field and Working Principle

The LTC2945HMS#PBF is a PMIC – Power Supply Controller, Monitor from Linear Technology, a key member of Linear Technology’s large portfolio of power management ICs. It is designed to monitor voltages, currents, and temperatures in modern systems, and is especially beneficial for mobile computing, automotive, and industry systems.

The power supply controller and monitor uses a built-in digital programmable current-sense amplifier with high sensitivity and fast settling times. This allows the user to monitor power supplies, enabling fast, accurate, digital voltage and current measurements. By monitoring various telemetry signals, users can gain insight into the power supply status and power usage of their system and have a single source to perform supervisory functions.

The main features of the LTC2945HMS#PBF include a programmable voltage monitor and selectable current-sense gain with a typical offset of just 0.3-1.5mV. The device is also equipped with under voltage, over voltage, and over current monitor comparators with fault comparator outputs, allowing for use in high current applications. The monitor has a wide range of programmable temperature trip points and a thermal monitoring temperature register.

The LTC2945HMS#PBF monitor is a versatile device, with features that can be customized to each user’s requirements. The device’s programmable comparators and registers allow users to quickly and easily set up their power supply monitors as needed. Multiple inputs can be configured, allowing for monitoring of different voltages, currents, and temperatures, with crisp, accurate readings.

The working principle of the LTC2945HMS#PBF involves two main components – the digital programmable current sense amplifier and the comparators and registers. The highly sensitive current-sense amplifier converts sensor or power supply analog signals into digital equivalents, with a typical offset of 0.3-1.5mV. The digital signal is then processed to monitor power levels and signals, providing telemetry data about system power usage and supply parameters. The comparators and registers let the user configure the monitor, setting thresholds for under and/or over voltage conditions and over current conditions, which can then be monitored and stored in the device’s onboard registers. The built-in thermal monitoring temperature register also allows the user to monitor system temperatures, preventing any potentially damaging overloads.

The LTC2945HMS#PBF is also immune to high EMI and transient noises, helping to ensure accuracy and stability. It also eliminates the need for external calibration and level shifting circuitry, reducing PCB space and overall system cost. It has a variety of features, such as programmable hysteresis, delay time, and acquisition time settings, making it an ideal solution for a wide range of power monitoring and management applications.

In conclusion, the LTC2945HMS#PBF is a robust, precise, and highly capable power supply controller and monitor from Linear Technology. With its built-in current sense amplifier, programmable registers, and configurable comparators, it provides a powerful and reliable solution for monitoring an array of system voltages, currents, and temperatures. Easily customizable to user requirements, it is a great choice for any power monitoring and management application.

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