TPS3851G50EQDRBRQ1

Series:	Automotive, AEC-Q100
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:	5V
Operating Temperature:	-40°C ~ 125°C (TJ)

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Introduction

TheTPS3851G50EQDRBRQ1 is an ultra-low power Protection Single Chip Supervisory Circuit with integrated fast-reacting Electronic Pressure Switches. It offers superior protection and fast-reacting reliability for microprocessors and other sensitive electronic circuits. Designed for applications requiring high accuracy, theTPS3851G50EQDRBRQ1 features a programmable pull-up current, as well as an adjustable reset timing window and reset output open-drain circuit. This device helps provide improved protection in systems that are vulnerable to power transients, power glitches, overvoltage, undervoltage and other problems.

Application Fields

TPS3851G50EQDRBRQ1 is mainly used in computers, laptops, mobile devices and other electronics systems. It is designed to address the common problems of power transients, power glitches, overvoltage, undervoltage and other problems. This device is specially designed for miniaturization and low cost for various applications. For example, it can be used in PC motherboards to prevent memory corruption, to protect I2C/SPI bus from dangerous voltage/current level, in power supplies/adapters to protect the downstream systems from undervoltage/overvoltage and in automotive applications to detect overheating.

Working Principle

TheTPS3851G50EQDRBRQ1 works by monitoring both the voltage and the current of the power supply. It can monitor the voltage of the power supply by sampling the voltage at the output. If the voltage exceeds the defined upper limit, theTPS3851G50EQDRBRQ1 will trigger a reset signal to shut down the system. The current of the power supply is also monitored to check if it falls below the defined lower limit. If the current is below the defined lower limit, theTPS3851G50EQDRBRQ1 will also trigger a reset signal to shut down the system.The reset output of theTPS3851G50EQDRBRQ1 is an open-drain circuit. When the device is active, the output can be pulled to a low voltage by the pull-down transistor, thus providing an active low reset output signal. The reset timing window of theTPS3851G50EQDRBRQ1 is adjustable to control the response speed. The reset pulse width is adjustable by the SWAP pin function.

Conclusion

TheTPS3851G50EQDRBRQ1 is an ultra-low power Protection Single Chip Supervisory Circuit with integrated fast-reacting Electronic Pressure Switches. It is mainly used in computers, laptops, mobile devices and other electronics systems to protect the system from dangerous voltage/current levels, power transients, power glitches, overvoltage and undervoltage. Its reset output is an open-drain circuit and the reset timing window is adjustable to control the response speed.

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