TPS3838J25DBVRG4

Series:	--
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:	100 ms Minimum
Voltage - Threshold:	2.25V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	TPS3838J25

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TPS3838J25DBVRG4 – PMIC Supervisors

PMIC (power management IC) supervisors are ICs which are used to protect sensitive electrical components from overvoltage and overcurrent events. An example of such a supervisor is the TPS3838J25DBVRG4, manufactured by Texas Instruments. This section will discuss the application fields and working principle of this device in order to provide a better understanding of how PMIC supervisors are used.

Application Fields

PMIC supervisors are commonly used to provide protection for components in a variety of applications. These include, but are not limited to, portable electronics, automotive systems, medical devices and datacom systems. The TPS3838J25DBVRG4 has a simple architecture and is highly integrated, making it well suited for use in such applications. The device is capable of monitoring up to two system power supply voltages and is specially designed to detect over-voltage, under-voltage, over-current and short-circuit faults.

Working Principle

The TPS3838J25DBVRG4 is a voltage and current supervisor which is designed to monitor two system power supply voltages. The device utilizes two operational amplifiers, one for each input, which constantly compare the two supply voltages in order to detect any voltage differences. If the differential voltage exceeds a certain threshold, then the integrated comparator will detect this and issue a fault signal.The device is also used to monitor current levels in order to detect any over-current or short-circuit faults. This is achieved using an integrated current sense amplifier which is connected to the two inputs. The device monitors the voltage drop across a current sensing resistor (which is connected in series with the input) and if the voltage drop exceeds a certain level, then the amplifier will detect this and trigger a fault signal.

Conclusion

In conclusion, the TPS3838J25DBVRG4 is an example of a PMIC supervisor manufactured by Texas Instruments. The device is designed to protect electrical components from overvoltage, undervoltage, over-current and short-circuit events. It is well suited for use in a variety of applications, including portable electronics, automotive systems, medical devices and datacom systems. The working principle of the device is based on the use of two operational amplifiers with integrated current sense amplifiers to monitor the supply voltages and current levels, detect any faults and issue a signal.

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