TPS3851H25EDRBT

Series:	--
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	170 ms Minimum
Voltage - Threshold:	2.5V
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	8-VDFN Exposed Pad
Supplier Device Package:	8-SON (3x3)

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Introduction

Power management integrated circuits (PMICs) are essential to any design because they provide the core power functions necessary for operation. A PMIC can be a stand-alone chip or be integrated into other electronic blocks, or integrated into custom devices. A PMIC typically provides voltage regulation, current regulation, and power sequencing functions.The TPS3851H25EDRBT is a PMIC from Texas Instruments that is a supervisor. The device is specifically classified as a Brown-Out Detector (BOD) Supervisor and includes a 3.2V to 5.5V supply and an improved version of the Thermal Shutdown (TSD) diagnostic technology.

Application Field

The TPS3851H25EDRBT can be used in many different types of application fields. The core purpose of this device is to protect and monitor microprocessors, especially those that require steady power while operating. It can also be used to monitor and protect memory chips and any other electronic components that require a constant source of power to operate. The TPS3851H25EDRBT can also be used in industrial applications, such as automation and control systems, that require consistent power and safety protection. It is also commonly used in medical equipment and consumer electronic devices, such as smartphones, tablets, and computers. In addition, it is ideal for battery powered applications that need to be monitored, as it can detect any changes in battery power and alert users accordingly.

Working Principle

The TPS3851H25EDRBT is an integrated supervisor IC that helps to monitor power levels for microprocessors, memory chips, and other electronic components. It ensures that the device does not operate at any unsafe power levels by signaling an alert whenever the power goes above or below the programmed safe voltage. It uses a dedicated TSD pin to detect when the power supplies become too hot, which then triggers the TSD output. This output can be used to shut down the system if necessary, or alert the user of a potential problem. The device also offers an improved version of the TSD, called the Brown-Out Detector (BOD).The BOD detects when the power supply drops below a certain voltage threshold, which then triggers an alert to be sent to the system. This alert can be used to shut down the system or inform the user of an issue. In addition, the supervisor also features a precision bandgap reference, a temperature sensor, and a watchdog timer. These features help to ensure that the system remains stable and is not subject to any undesired fluctuations in power.

Conclusion

The TPS3851H25EDRBT is a PMIC from Texas Instruments and is classified as a Brown-Out Detector (BOD) supervisor. It provides voltage regulation, current regulation, and power sequencing functions to help protect and monitor microprocessors, memory chips, and other electronic components. It operates by detecting changes in power levels, triggering an alert when they go above or below the programmed safe voltage. It also has a TSD feature to detect when the power supplies become too hot, as well as a precision bandgap reference, a temperature sensor, and a watchdog timer. The device can be used in several application fields, including industrial, medical, and consumer electronics.

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