LTC2935CDC-3

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Power Management Integrated Circuits (PMICs) are semiconductor devices that control, measure and manage a power signal. This power signal can be either an isolated or non-isolated signal, and can involve high voltage or higher current applications.

PMICs range from basic power management functions that offer basic on/off control of a power signal or supply, to full-featured, high-performance PMICs that provide complex power management functions such as voltage scaling, temperature monitoring, and complex sequencing.

One example of a power management integrated circuit is the LTC2935CDC-3, which is a high-accuracy voltage supervisor for microprocessors, FPGAs, DSPs and ASICs. It is a three-channel supervisor and offers microprocessor-compatible output for system reset and two configurable outputs for power-on reset and microprocessor wake-up. It also provides manual reset input and autonomous reset of the inputs/outputs.

Application Fields of LTC2935CDC-3

The LTC2935CDC-3 can be used in a wide range of applications, including industrial, computing, automotive, office automation, and communication. It is suitable for providing microprocessor-compatible reset and power-on reset for a system and it can be used as a reset manager to sequence power supplies. It can also be used as an independent voltage supervisor, where the configurable output can be used as an alert warning of out-of-limit input voltages, and the microprocessor-compatible manual reset input can be used as an independent system reset.

Working Principle of LTC2935CDC-3

The LTC2935CDC-3 is based on a switched capacitor network that provides accurate voltage detection over a wide input voltage range. It contains three individual comparator circuits – one for the supply voltage (VCC), one for the system reset voltage, and one for each of the two configurable outputs. When the supply voltage reaches a preset limit, the comparator will output a reset signal. Similarly, when a configurable output voltage threshold is exceeded, the corresponding output will be activated.

The LTC2935CDC-3 also contains an integrated time-out circuit, which is designed to ensure that the system reset voltage is reset after a brief period of time, in the event of a sudden voltage drop or surge.

The LTC2935CDC-3 is available in a 3mm x 3mm TDFN package, making it suitable for use in high-density applications and reducing the board space required. The voltage supervisor offers low current consumption, making it suitable for battery powered systems, and it has built-in protection against fault conditions such as open-circuit voltage and over-temperature operation.

Overall, the LTC2935CDC-3 is an accurate and reliable voltage supervisor and system reset manager that is suitable for a wide range of applications. It offers good accuracy and low power consumption, making it an ideal solution for power management in a variety of applications.

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