TPS3813L30DBVTG4

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The TPS3813L30DBVTG4 is an ultra-small supervisor IC specifically designed to monitor power supply rails and act as a system reset. This tiny package is an ideal solution for limiting the power supply finite stream and for providing a reset trigger on power rail fault conditions. It is featured with low quiescent current, multiple reset timeout, adjustable reset active and inactive thresholds and basic enable/disable pin control.

The device is suitable for applications such as monitoring of single or multi-rail power supplies in applications such as medical devices, automotive electronics, cell phones, tablets, personal digital assistant and microcontrollers.

TPS3813L30DBVTG4 is classified as PMIC – Supervisors and its working principle and application field are fully explained in this article.

Working Principle of TPS3813L30DBVTG4:

TPS3813L30DBVTG4 IC works by monitoring the power supply rail and providing a reset input to the microcontroller when the voltage falls below an adjustable low threshold, VLOWTH. When VLOWTH is crossed, a resetn output asserts a reset signal to the controller. The reset is asserted or de-asserted based on the input setpoint, veto and manual reset logic.

When the fault condition clears, the monitor needs to know that the voltage has returned to normal and the system can resume operation. To detect this, the monitor tracks the input voltage and when it reaches a second adjustable threshold VHIGHTH, the IC negates the reset signal.

This helps in preventing the system from resetting multiple times during a fault condition and providing a consistent power supply rail monitoring.

Application Field of TPS3813L30DBVTG4:

TPS3813L30DBVTG4 is a perfect solution for applications in medical equipment, automotive electronics, cell phones, tablets, personal digital assistant and microcontrollers.

The low quiescent current and ultra-small package size make it a viable choice for power control and reset system designs with tight space constraints. The adjustable threshold and reset delay timer assures reliable operation for multiple input supply conditions and requires minimal design effort.

The TPS3813L30DBVTG4 supervisor is equipped with the dual adjustable power supply threshold that maximizes flexibility of power supply designs and significantly reduces design complexity of small form factor devices compared to other reset solutions.

The interface options include two integrated digital input pins to detect the reset condition, as well as control options to manually reset the device. The digital input pins can be used as a reset signal from other devices or can be combined with on-chip digital logic functions such as gates, or flip-flops to meet specific design requirements.

Moreover, TPS3813L30DBVTG4 is designed for monitoring low power circuits, providing a warning that the output power has reached a level below the threshold. It is well suited for drive circuits, connectors, and other applications that may require specific monitoring of power supplies. It also provides superb signal integrity and low noise immunity for various combinations of noise signals.

Overall, the TPS3813L30DBVTG4 supervisor is a highly effective and cost-efficient solution for providing reliable power monitoring in automotive electronics, small form factor devices, and other electronic applications.

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