TPS3895PDRYT

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The TPS3895PDRYT is a PMIC (Power Management IC) - Supervisors designed to protect a system\\'s power supply from overvoltage events. It monitors an input supervisory voltage input from a precision voltage reference and will automatically assert an active-low nRESET or nPO (Power-On Reset) output when the input voltage exceeds a threshold. This IC offers a high level of flexibility and features ultra-low static supply current of 8.2 µA, hysteresis as low as 0.3 V, and an adjustable reset trip point (3.3V to 5.2V).

The TPS3895PDRYT is ideal for use in low power applications such as power supplies and embedded systems. Its low power consumption and precise trip point makes it well suited for use in battery-powered systems, such as cell phones and PDAs, that require a precise reset response. The chip also provides an additional host-reset or wake-up function, which can help reinitialize or restart software programs in embedded systems.

The TPS3895PDRYT operates from a wide input voltage range of 1.8V to 5.5V and requires only a 2.2μF ceramic input capacitor for stability. The push-pull nRESET / nPO output logic has an open-drain configuration, which allows it to be driven with a variety of optional pull-up resistors for status or reset duration control. There are also optional push-pull or open-collector NFAULT outputs that can be used to initiate an alternate recovery strategy as an indication of system power failure.

The IC also offers a variety of features to ensure proper functionality of the output logic, including a reset time-out (1 ms) facility, watchdog timer (500 ms), temperature-sensitive reset input, and built-in debounce circuitry. The watchdog timer is used to ensure that the system is functioning properly and the temperature-sensitive Reset Input allows the chip to be disabled under very high temperatures, ensuring the system is protected from thermal overload.

The TPS3895PDRYT is well suited for applications such as DC-DC power supplies, portable systems, server-on-module modules, low voltage HDD, and automotive systems requiring accurate and reliable power supply monitoring with an adjustable reset trip point.

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