TPS3850H30QDRCRQ1

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
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:	Adjustable/Selectable
Voltage - Threshold:	3V
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	10-VFDFN Exposed Pad
Supplier Device Package:	10-VSON (3x3)

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IntroductionPMIC (Power Management Integrated Circuit) Supervisors are a type of integrated circuit used to regulate levels of power management in a variety of applications. They perform a vital role in the operation of electronic devices and are an integral part of many devices. The TPS3850H30QDRCRQ1 is a PMIC Supervisor from Texas Instruments designed for use in applications such as PLCs (Programmable Logic Controllers), automotive, medical and industrial systems. The TPS3850H30QDRCRQ1 boasts accurate voltage regulation and low power consumption, as well as a number of features for safe power monitoring. Below, the application field and working principle of the TPS3850H30QDRCRQ1 shall be discussed.Application FieldThe TPS3850H30QDRCRQ1 is a highly-integrated voltage supervisor device that is well-suited to a wide range of application fields. It is already implemented in a variety of applications such as automotive, medical and industrial systems, due to its low power requirements, accurate voltage regulation, and a host of safety-monitoring features. The TPS3850H30QDRCRQ1 is specified with a 0.9V threshold voltage, making it a well-suited choice for protecting circuitry from accidental reverse-voltage/EMC events that could potentially damage the circuits in question. Its low power requirements also make it a great choice for systems where battery-powered operation is imperative.The TPS3850H30QDRCRQ1 is also used to protect a wide range of digital and analog circuits from over-voltage and inrush current rating. Its small size and light weight also make it a great choice for applications such as embedded systems, where size and weight are of prime importance. The TPS3850H30QDRCRQ1 also features a Current Limiting Output (CLO) and an Open-Collector (OC) output for independent monitoring of Under Voltage Lockout (UVLO) and over-voltage events. The output signals can be used to safely shut down the system or signal an Over-Temperature event.Working PrincipleThe TPS3850H30QDRCRQ1 is an integrated voltage supervisor device that is able to accurately monitor and control the voltage levels of a system. The device consists of two main components that are responsible for performing the voltage monitoring and regulation functions – the Voltage Detection Circuit (VDC) and the Adjustable Threshold Control Circuit (ATCC).The VDC is responsible for monitoring the system’s voltage level and sending an appropriate signal to the ATCC when the voltage reaches the device’s threshold. The ATCC then adjusts the voltage so that it remains within the device’s predefined threshold level. The TPS3850H30QDRCRQ1 offers adjustable thresholds that range from 0.9V to 4.3V, and can be set according to the application’s requirements.In addition to its voltage monitoring and regulation functions, the TPS3850H30QDRCRQ1 also offers several safety-related features. These include an on-chip Power-On Reset (POR) circuit that is designed to feed an appropriate reset signal to the system that is being monitored, as well as a slew rate control circuit to limit inrush current rating. The TPS3850H30QDRCRQ1 also features a thermal shut down function that prevents the system from overheating. ConclusionThis article has outlined the application field and working principle of the TPS3850H30QDRCRQ1 PMIC supervisor from Texas Instruments. The TPS3850H30QDRCRQ1 is a highly-integrated voltage supervisor device and has already been implemented in a variety of applications such as automotive, medical, and industrial systems. The TPS3850H30QDRCRQ1 is specified with a 0.9V threshold voltage and is capable of accurately monitoring and controlling the voltage levels of a system, as well as offering a number of safety-related features to protect the system from over-voltage and inrush current rating.

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