TPS3839L30DBZR

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:	2.63V
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:	TPS3839L30

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Introduction of PMIC - Supervisors

Power Management Integrated Circuits (PMICs) are electronic components that are essential for power management applications. PMICs are used in mobile devices including economic mobile phones, advanced tablets, computers, telecom equipment and the Internet of Things (IoT). Supervisors, which are a type of PMIC, are employed to protect critical components and maintain system stability.

TPS3839L30DBZR Application Field and Working Principle

The TPS3839L30DBZR is a supervisor IC component which provides power supply sequencing and detection, lockout functions and other protective features. It is an advanced Hi-Volt supervisory solution specifically designed to monitor the power supply levels and provide system reset, automated shut off and power-on sequencing in embedded and consumer applications. The TPS3839L30DBZR is used in embedded consumer applications and other applications requiring power supply sequencing, detection, lockout and system reset. It also provides a single fixed reset signal for each power supply rail. The features of the TPS3839L30DBZR include a fast reset time of 1.2 ms, adjustable voltage trip levels for power supply monitoring, a lockout detector for improved stability and a wide supply range from 2.5V to 5.5V.The TPS3839L30DBZR has a working principle which uses voltage detect thresholds to monitor power supply rails. The thresholds are set at two trip points, an under threshold and an over threshold, using external resistor divider networks which set the trip points. When the voltage on each power rail reaches the under or over threshold, an associated interrupt output is given. The interrupt outputs are debounced and provide reset signals to the system to ensure the power supplies are stable and in line with the set thresholds. The TPS3839L30DBZR also has a lockout detector which monitors the voltage rail and sets a lockout threshold. If the voltage drops below the lockout threshold, the system will automatically shut down and the associated reset signal will be asserted. The reset signal will remain active until the voltage rail rises above the lockout threshold.

Conclusion

The TPS3839L30DBZR is a supervisor IC component which provides power supply sequencing and detection, lockout functions and other protective features. It is designed for embedded and consumer applications and offers features such as fast reset time of 1.2 ms, adjustable voltage trip levels for power supply monitoring, a lockout detector for improved stability and a wide supply range from 2.5V to 5.5V. The TPS3839L30DBZR uses voltage detect thresholds to monitor power supply rails and sets a lockout threshold to ensure system stability when the voltage drops below the threshold.

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