TPS3851G30EDRBT

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PMIC - Supervisors are a device category that integrates a variety of power management functions into one IC. It is used to provide power management for applications such as personal computers, communication systems, consumer electronics, industrial, automotive and safety and security monitoring systems. Among these PMIC - Supervisors, today we are going to discuss the application field and working principle of the TPS3851G30EDRBT.

As a member of the Texas Instruments TPS38xx family of low-power supervisor ICs, the TPS3851G30EDRBT is a precision reset monitor and has a small package size. It provides a range of threshold options and reset output accuracy, and can be implemented as a single- or dual-channel device. The device provides an active-low reset output, system power-on reset, power-on reset/supply voltage monitor (POR/VRMON), and a watchdog timer, which can be used in a variety of microcontroller-based systems.

The TPS3851G30EDRBT is an ideal solution for industrial automation, consumer electronic products, and consumer electronic applications that require power monitoring, detection and reset. It is a simple solution for adding external voltage monitors, reset outputs and/or watchdog timers to PC systems, as well as automotive, battery-management, home-appliance and set-top box applications.

The device operates by detecting a voltage that dips below its preset threshold. When this occurs, the reset output will be activated to either initiate a reset or put a device into a low-power mode. This reset mechanism is valuable in a wide range of applications, particularly in systems that require system stability and continual monitoring of incoming power sources. This reset protection can also be used to prevent data loss and system malfunctions.

The TPS3851G30EDRBT features a power-on reset circuit (POR) that is triggered by either an applied supply or reset signal. When the device is powered on, the POR sequence will initialize the reset output, and then monitor and regulate the voltage level of the power supply. When the monitored voltage dips below the set threshold, the reset output will be activated to either reset the system or put a device into a low-power mode.

In addition, the device also features a power supply supervisor circuit (PSS) that is triggered by a non-applied (monitoring/testing) power supply. This PSS feature is useful in applications where the applied voltage supply needs to be monitored at rates that are faster than the POR circuit can provide. When the monitored voltage dips below the set threshold, the reset output will be activated to either reset the system or put a device into a low-power mode.

The device also features a watchdog timer that can be used to detect system errors or deadlocks. When the watchdog timer is enabled, it will reset the system or put a device into a low-power mode if it detects a malfunction before its timer period expires. This can be useful in applications where system timeouts are occurring or where the device needs to be put in a low-power mode when it is not being used.

The TPS3851G30EDRBT is a simple solution for applications that require a reliable and economical way to monitor a power supply and provide reset protection. It is highly suitable for use in a range of industrial, consumer electronic, and automotive applications that require either reset protection or power management.

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