TPS3839G18DBZR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	120 ms Minimum
Voltage - Threshold:	1.67V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3
Base Part Number:	TPS3839G18

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

TPS3839G18DBZR is a highly functional, low-power supervisor family of Power Management Integrated Circuits (PMIC). It offers extensive monitoring capabilities, reliable reset protection, and level detection and alert signaling. The goal of this article is to provide an overview of the application fields and working principles of the TPS3839G18DBZR. Furthermore, some of the features and technical specifications are delineated as well.

Application Fields

The TPS3839G18DBZR is an ideal solution for monitoring and protecting systems from over-voltage and current faults, or from losing power or reset conditions. It is capable of providing system reset and latch-up protection at low-voltage levels and can stay in reset for long periods of time.The TPS3839G18DBZR is suitable for batch test solutions, providing ample protection and high-precision power control in a variety of applications. Most of these applications require long battery lives as part of their operational conditions, as the TPS3839G18DBZR consumes very little power and has low sleep current. The device is also well-suited for communication systems and embedded applications.

Working Principles

The working of the TPS3839G18DBZR is based on its Supervisory Circuit, which provides monitoring of the power supply and reset functionality. The reset signal is activated when the monitored supply voltage falls below or rises above the programmed threshold level. A reset delay is offered before the reset output is activated, allowing the system to become quiescent and then the reset cycle to occur.The device also features an adjustable window watchdog filter which can be used for system monitoring. It allows for the detection of problems in the system, such as software and hardware errors. If a malfunction occurs, the watchdog filter activates and starts a reset cycle.The device offers a variety of additional features, such as open drain and manual reset input signals. The open drain feature allows the system to enter reset mode quickly and the manual reset input allows the user to manually enter reset mode.The TPS3839G18DBZR also has a temperature monitor which acts as a safeguard against temperature-related faults, such as over-temperature protection. It has a built-in thermal warning monitor which allows the system to detect and alert when the temperature rises above a certain level.

Features

The features of the TPS3839G18DBZR are outlined as follows:

• High-precision power monitoring and control
• CMOS logic-compatible reset input
• Programmable watchdog timer
• Pre-programmed or user-programmable reset thresholds
• Open drain output for fast reset response
• Manual reset input
• Minimum 70µs reset time-out period
• Performs reset sequences automatically
• Built-in temperature monitor

Technical Specifications

The technical specifications of the TPS3839G18DBZR are:

• Operating Voltage Range: 1.65V to 3.6V
• Operating Temperature Range: -40°C to +125°C
• Operating Current: 1µA (maximum)
• Accuracy of Reset Detection Thresholds: 0.8% (maximum)
• Reset Delay: 70µs (minimum)
• Watchdog Timer: User programmable
• Output Type: Open drain
• Package Type: 3 x 3mm WQFN

Conclusion

The TPS3839G18DBZR is a low-power PMIC supervisor family which provides comprehensive power monitoring and control capabilities. It offers a reliable and high-precision reset protection and level detection and alert signaling. The device is suitable for batch test solutions, communication systems and embedded applications. Furthermore, it can be utilized for monitoring and protecting systems from overtemperature, over-voltage and current faults, or from losing power or reset conditions.

References

Texas Instruments. (2018, August 31). TPS3839G18DBZR - Supervisors. Retrieved from https://www.ti.com/product/TPS3839G18DBZR

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description