UCD9081RHBRG4

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Sequencer
Number of Voltages Monitored:	8
Output:	--
Reset:	Active Low
Reset Timeout:	2 µs Minimum
Voltage - Threshold:	Adjustable/Selectable
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	32-VFQFN Exposed Pad
Supplier Device Package:	32-VQFN (5x5)
Base Part Number:	UCD9081

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The UCD9081RHBRG4 is a 3-volt supply device from Texas Instruments Power Management Integrated Circuits (PMIC) - Supervisors family. It helps protect circuits from various overvoltage and undervoltage faults. The device consumes 3.2 mW of quiescent current and operates from -40 to 85 degrees Celsius. This low-power supervisor family from TI is designed to monitor a 3.0V source using a single-level reset threshold for protection against supply glitches, brownouts, and overvoltage conditions. It’s capable of handling a wide range of devices with adjustable reset thresholds and time delays, enabling customers to select the exact threshold and time delay needed.

This device is especially useful in applications where it’s important to reset electrical systems in the event of a fault. The primary purpose of the UCD9081RHBRG4 is to detect overvoltage and/or undervoltage conditions and provide system reset. This device features adjustable reset thresholds and time delays to customize the system\'s response to overvoltage and undervoltage conditions. Additionally, it has active-low interrupt output which can be used to translate the overvoltage/undervoltage event to the microprocessor or digital controller.

The UCD9081RHBRG4 is a highly integrated device. It includes a voltage level detector with two output levels, a low-power comparator to detect the reset threshold, an overtemperature detector and timer, as well as two identical SOT-23 packages for device scaling. It also includes a temperature sensor and temperature detection logic to prevent thermal runaway and reduce system reset time.

The UCD9081RHBRG4 is used in a variety of applications that require monitoring of 3V power sources. It is commonly used in automotive, industrial, and consumer applications. Its small size, low power consumption, and adjustable reset threshold and time delay make it an ideal solution for a wide range of applications. It can be used to protect analog circuits, digital circuits, and any other system requiring protection from overvoltage/undervoltage faults.

The UCD9081RHBRG4 operates on a single 3V power supply and it employs an active-low reset pin to reset the system when an overvoltage/undervoltage condition is detected. This pin is active low, which means it will send a reset signal when the voltage passes below the set threshold. The reset signal remains active until the voltage returns to normal, and then it turns off automatically. In addition, the device includes an overtemperature detector and timer which triggers an interrupt request when the junction temperature exceeds a predetermined value.

The UCD9081RHBRG4 is a versatile, low-power device with a wide range of applications. It offers a simple and cost-effective solution for protecting against overvoltage and undervoltage conditions. This device is well suited for low-power and space-constrained systems, and due to its adjustable reset threshold and time delay capabilities, it is able to fit the specific needs of a variety of applications.

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