TCM809RENB713 Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are electronic components used for managing the power of a product or device. They are responsible for turning the power of a product on and off and for regulating different voltage levels within the product. PMICs are used in a wide range of applications from mobile phones and TVs to servers and wearable devices. Power management integrated circuits often contain several different functions, including power regulation and monitoring, voltage supervision, voltage regulation, and power sequencing. Supervisors are an important type of PMICs that monitor the power supply of a system, providing an early warning when the power supply fails or drops below an acceptable level.

TCM809RENB713 is a PMIC - Supervisors designed by Texas Instruments. The device is a low-cost power management solution with an integrated timer, voltage supervisor, watchdog timer, and reset signal generation. The TCM809RENB713 provides system power management with simple power-on, power-off, and system reset sequences, as well as the ability to arbitrarily sequence multiple power rails and reset signals. It also features a 1.5μs reset assertion time, allowing for precise system initialization, and a wide input voltage range from 1.5V to 5.5V.

The TCM809RENB713 has a variety of applications in embedded systems, from providing an early warning system for unexpected power failure to controlling complex power-up and power-down sequences for multi-rail systems. It can be used to monitor the system\'s power rail and trigger critical reset events to protect the system and preserve its settings. The watchdog and reset function of the device is also useful in managing user applications, such as power-off and auto-start, which can be timed using the integrated timer.

The TCM809RENB713 works by detecting a change in its input supply voltage, either high or low, and asserting a power-on reset (POR) or power-off reset (POF). The POR input is usually higher than the POF voltage, so when the supply voltage is at or above the POR level, the output reset (RESET) pin is kept in the low state. If the voltage then falls below the POF threshold, the RESET pin is pulled high, resetting the system. The WDTR pin operates in a similar way, generating a reset signal if the WDTR pin does not receive the expected signal or the voltage supplied to it falls below the POF threshold for a period of time.

The TCM809RENB713 provides users with an easy and cost-effective solution for managing the power of a system. Its integrated timer, power monitoring, and reset generation functions allow for precise control over a system\'s power and reset sequences, making it an ideal choice for embedded system designers who need to monitor and control a system\'s power supply. The device is also versatile enough to be used in a wide range of applications, such as portable electronics, automotive applications, and industrial automation systems.

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