TPS389018QDSERQ1

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:	--
Voltage - Threshold:	1.8V
Operating Temperature:	-40°C ~ 125°C (TJ)

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Introduction to TPS389018QDSERQ1

TPS389018QDSERQ1 is an advanced system supervisor circuit specifically designed to monitor the power-on reset (POR) and system voltage or voltage rails. It is based on the latest technologies from Texas Instruments, it’s a high performance System Supervisory Circuit (SCC) that provides efficient and reliable power-on reset, brown-out detection and supervisor functionality for embedded systems.

Application Field

Applications for the TPS389018QDSERQ1 supervisor include all types of embedded systems and microcontrollers running on various voltages and requiring reset management within the circuit. Typically, the supervisor can be used to manage and monitor the power-on reset, power-down reset, brown-out reset and voltage detection of any type of embedded system. Pin-out range and different packaging types allows the device to fit all industry standard requirements.

Working Principle

The TPS389018QDSERQ1 enables power-on reset and brown-out detection to ensure safe and reliable start-up of embedded systems. The supervisor features an ASIC core that is bidirectionally connected to the chip’s logic. The core also contains a master reset signal and a reset time delay circuit as well as a Power Good output with a selectable power-on delay time.The TPS389018QDSERQ1 monitors the power-on reset (POR) and voltage detection of any type of embedded systems. When VDD voltage rises above the reset voltage threshold, the TPS389018QDSERQ1 will assert a reset signal on the RESET pin and keep it asserted for a minimum reset timeout period. Upon expiration of the reset timeout period, the TPS389018QDSERQ1 will de-assert the reset signal. Additionally, the TPS389018QDSERQ1 has two separate open-drain Power Good output signals.The TPS389018QDSERQ1 impedance-matched power-on reset and undervoltage detection circuits provide improved accuracy and system performance. The TPS389018QDSERQ1\'s wide operating voltage range allows the device to be used over a wide spectrum of applications. The TPS389018QDSERQ1 also features multiple power-on delay choices and reset timeout periods that are programmable either by external RC delay networks or via software code. The reset time delay allows power sequencing to be achieved.

Conclusion

The TPS389018QDSERQ1 is an advanced system supervisory circuit designed to provide efficient, reliable and accurate power-on reset, brown-out detection and supervisor functionality for embedded systems. Its wide range of operation, programmable delay and reset timeout capabilities make it suitable for a variety of applications. The device offers improved accuracy over other SCCs and is an ideal choice for a reliable supervisor circuit.

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