TPS3808G01DRVTG4

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The TPS3808G01DRVTG4 is a voltage supervisor IC designed to provide a high level of accuracy, flexibility and reliability for monitoring core voltages, system resets and push-button reset functions. It has a high input threshold voltage for monitoring core voltage and an adjustable output voltage for controlling an external power supervisor. It is also capable of setting up active-high or active-low system resets, and reporting push-button events to the MCU.

The TPS3808G01DRVTG4 is a PMIC (Power Management IC) in the supervisors category. It is designed for low-voltage and ultra-low-voltage systems applications such as those used in small digital appliances, notebooks, tablets, and other embedded systems applications. It also finds applications in automotive, industrial and medical electronics solutions.

The primary features of the TPS3808G01DRVTG4 include: adjustable input voltage threshold and delay, selectable active-high/active-low system reset, selectable push-button reset, push-button event monitoring, output latch signal, undervoltage lockout protection, adjustable reset output, and precision status signal.

In terms of operation, the TPS3808G01DRVTG4 voltage supervisor has an adjustable input voltage threshold that defines the minimum voltage to be monitored on the power supply rail. The input voltage threshold is adjustable from 0.4V to 4V. The input voltage is applied at the IN pin. It also has an adjustable delay timer which enables the user to select the timing of the reset output from 100 ms to 1 second.

The TPS3808G01DRVTG4 has two outputs to alert the user of conditions on the power supply rail. The reset output provides a reset indication and can be configured for active-high or active-low reset operation. The other output is a status signal to indicate if the voltage is within or outside the threshold. The status signal is valid only when the circuit is enabled, which is determined by the EN pin.

The TPS3808G01DRVTG4 also features a push-button reset input. This feature can detect a low going single push-button event. When a low going push-button event is detected, the reset output is activated or deactivated according to the active-high/active-low configuration. The push-button input has internal hysteresis of 10 mV to reduce noise sensitivity.

In addition, the TPS3808G01DRVTG4 also has a precision output latch signal that indicates the current power rail condition to the MCU. The output latch signal is valid only when the circuit is enabled, and provides an active-high or active-low output that indicates whether the measured voltage is below the input voltage threshold. The output latch signal is latched until the IN voltage becomes valid, at which point the latch is cleared.

Finally, the TPS3808G01DRVTG4 also has an undervoltage lockout protection feature which prevents the reset output from going active when the input voltage is below the adjustable threshold. This feature ensures that the supervisor will not hold the reset output active when the voltage drops below the threshold.

The TPS3808G01DRVTG4 provides a variety of features to ensure reliability and accuracy for monitoring core voltages, system resets, and push-button reset functions for a wide range of applications. With its low-voltage and ultra-low voltage compatibility, it is an ideal solution for small digital appliances, notebook, tablets, automotive, industrial, and medical electronics applications.

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