Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	2
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	70 ms Minimum
Voltage - Threshold:	2.93V, 4.55V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	TPS3306-33

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PMIC - Supervisors: TPS3306-33DR Application Field and Working Principle

PMICs (Power Management Integrated Circuits) are integrated circuits primarily designed to ensure the clean power supply and efficient energy transfers for electronic devices. PMICs combine functions to improve low power efficiency, save energy, and reduce heat. Supervision ICs are a type of PMIC which provides monitoring, measuring, and control of system operation parameters such as voltage, current, and temperature to ensure the reliability and safe operation of the system. The TPS3306-33DR is a low-power, high-precision, low-voltage supervision IC used to maintain system voltage accuracy in applications such as notebooks, tablets, and portable media players.

Application Field of TPS3306-33DR

TPS3306-33DR is a low voltage supervisor IC used to protect a system against unpredictable voltage fluctuations. It helps ensure system operation integrity by detecting an out-of-tolerance event, such as an over-temperature or low-voltage event, and shutting it down if necessary. The TPS3306-33DR is designed to be used as a reset signal generator, supplying a reset signal to the system processor in order to ensure proper system operation in the event of an out-of-tolerance voltage event. The IC monitors the selected voltage level and actually drives the reset signal. The TPS3306-33DR is typically used in portable and single-board applications, such as laptops, tablets, and portable media players, to guarantee a safe and reliable operation of the system.

Working Principle of TPS3306-33DR

The TPS3306-33DR IC is a voltage supervision device whose primary function is to monitor a voltage level in order to detect out-of-tolerance voltage events. The IC is designed to monitor an adjustable voltage range from 0.8V to 5.5V with a high accuracy of 0.4% over temperature. An internal comparator is used to compare the monitored voltage level against a reference voltage level stored in an internal memory.The IC includes an external threshold adjustment pin (THRESH) to adjust the voltage value at which the external reset signal is driven. When the monitored voltage drops below the adjustable voltage threshold (VTH), the reset is triggered. This reset signal is passed to the system processor, which then triggers the system reset to ensure system stability. The TPS3306-33DR also offers a wide variety of features to further ensure reliability in a system, such as temperature-compensated voltage monitoring, push/pull reset output, reset output enable pin, dual reset output, active-low reset output, and active-high reset output.

Conclusion

The TPS3306-33DR is a low-power, high-precision, low-voltage supervision IC designed to protect the system from unpredictable voltage fluctuations. Its primary role is to provide an adjustable voltage threshold and to monitor and generate a reset signal in the event of an out-of-tolerance voltage event. This IC is typically used in portable and single-board applications, such as laptops, tablets, and portable media players, to safely shut down the system in order to protect it from any unexpected accidents.

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