TPS3850H30DRCT

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The TPS3850H30DRCT is a Supervisor Integrated Circuit (IC) primarily used in power management applications, specifically event-driven CMOS Fan Controllers. This self-powered, adjustable voltage monitor continuously supervises a power supply and provides power on reset (POR) and power on detection (POD) when the reset signal goes active. Additionally, this supervisor features integrated power-save and power-down modes.

The TPS3850H30DRCT has a wide supply voltage range from 2V to 36V. In addition, the consumption current is less than 1.5µA, making it suitable for applications such as mobile and slim PC design. With a medium response, it ensures that an open or short circuit is not directly connected to the output of the reset signal during power on.

The supervisor IC is designed to quickly capture a brown-out signal which triggers the RESET OUT pin to switch to a high state. When the signal is no longer detected, the supervisor returns to a non-operating state and the RESET OUT pin goes low. Additionally, the over-voltage protected design makes it highly reliable for the aim of protecting circuits. Lastly, the output signal is open drain which allows for multiple microcontrollers to safely share a common RESET OUT pin.

The TPS3850H30DRCT application field includes low voltage application, power management circuit, fan controller, PC or laptop motherboard, server and so on. Aside from a wide range of applications, this supervisor IC is user-friendly, making it a great fit for certain applications.

A basic working principle of this supervisor IC is as follows. First, after the DC power is inserted into the power supply line, the voltage is monitored by the integrated voltage monitor. If the detected voltage is lower than the predetermined threshold, the RESET OUT pin will switch to a high state, triggering the internal power on reset. When the voltage returns to a normal level, the internal power on reset is disabled and the RESET OUT pin returns back to its non-operating low state. In the event of a voltage overflow, the detected voltage will be clamped which causes the RESET OUT pin to switch to a low state. In order to ensure the safety of the circuits, the supervisor IC is also designed to detect a short circuit between the power supply and ground lines.

In summary, the TPS3850H30DRCT is an IC supervisor designed for power management applications. It features a wide supply voltage range, low current consumption and an adjustable output voltage. Additionally, its open drain output design allows for multiple microcontrollers to share a common RESET OUT pin. Its event-driven CMOS Fan Controller makes it a great fit for PC or laptop motherboard, server and many other applications. Finally, it has an effective working principle of monitoring the voltage level, switching the RESET OUT pin to a high state in the event of voltage problems and disabling the power on reset when the voltage returns to normal.

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