TPS3850H09QDRCRQ1

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Introduction of TPS3850H09QDRCRQ1

TPS3850H09QDRCRQ1 is a member of the Texas Instruments TPS3850 family of micro-supervisory circuits. It is a low-power, single-supply supervisor circuit intended to monitor power-on reset and detect when the power supply voltage drops below a preset threshold. The TPS3850H09QDRCRQ1 provides a reset signal to the host processor when the voltage drops below the reset threshold. The TPS3850H09QDRCRQ1 requires a minimum of external components, as all necessary external components are integrated into the device.

Applications of TPS3850H09QDRCRQ1

The TPS3850H09QDRCRQ1 is suitable for a wide range of application fields, primarily in power and system management applications. It can be used to monitor the systems and the power rails in a circuit, to provide reset and watchdog functions, as well as brown-out detection. It can be used in a variety of embedded systems and applications, such as internet of things (IoT) nodes, power and industrial automation products, TVs, set-top boxes, servers, routers, medical and healthcare systems, entertainment systems, and motor control products.

Working Principle of TPS3850H09QDRCRQ1

The TPS3850H09QDRCRQ1 operates by detecting the voltage drop from the input power supply. When the power supply voltage drops below the reset threshold, the circuit outputs a reset signal to the processor. The reset signal is negative-going and open drain, and can be connected to other active-low signals. The circuit includes an output delay for a controlled reset signal width.

The reset threshold of the TPS3850H09QDRCRQ1 is adjustable from 1.6V to 4.75V, allowing the user to customize the reset threshold to their desired level. Further features of the TPS3850H09QDRCRQ1 include input UVLO threshold detection, reset debounce, reset signal synchronization, manual reset assertion, and output reset pulse width adjustment. It also offers low-quiescent current and a wide operating temperature range of -40°C to 125°C for reliable operation.

The TPS3850H09QDRCRQ1 is available in the LQFP-32 package, making it suitable for space restricted applications. It is also rated to be fully RoHS compliant and has a wide power supply range of 2.5V to 5.5V, allowing it to be used in a variety of applications.

Conclusion

The TPS3850H09QDRCRQ1 is a low-power micro-supervisory circuit designed to provide reset and watchdog functions, as well as brown-out detection. It is suitable for a wide range of applications, and features adjustable reset threshold, input UVLO threshold detection, output delay, manual reset assertion, and reset signal synchronization. It requires minimal external components and offers low-quiescent current and a reliable operating temperature range of -40°C to 125°C. Furthermore, the TPS3850H09QDRCRQ1 can be used in a variety of applications, making it an ideal choice for power and system management purposes.

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