S-80844CNUA-B85T2G

Series:	S-808xxC
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	4.4V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-243AA
Supplier Device Package:	SOT-89-3

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S-80844CNUA-B85T2G Application Field and Working PrinciplePower management integrated circuits (PMICs) are used mainly for regulating and managing power for digital electronics applications. The S-80844CNUA-B85T2G is an example of a PMIC. It is a supervisor device for use in digital systems that includes active low reset and watchdog timer circuitry.Supported by advanced process technology and a five-volt tolerant input level, the S-80844CNUA-B85T2G offers protection against voltage spikes, temperature issues and other system faults. The device provides an active low reset output and watchdog timer output which can be used as low as 1.2V.The S-80844CNUA-B85T2G is designed specifically for those digital systems which require high-voltage tolerance for power supply monitoring and reset functionality. The device provides an active low reset signal and the watchdog timer output which can be used as low as 1.2V. The power supply monitoring functions, such as monitoring of undervoltage, reverse polarity and overtemperature, help to ensure a reliable operation of the system. The output signal of the S-80844CNUA-B85T2G also allows customization of the reset sequence timing.The S-80844CNUA-B85T2G can be used in applications such as cellular phones, personal digital assistants (PDAs), PC peripheral cards, notebook PCs, point-of-sale equipment, intelligent peripherals and many more low-voltage portable electronics.The working principle of the S-80844CNUA-B85T2G IC is based on voltage monitoring, reset output, and watchdog timer. The core of this IC is the on-chip precision voltage regulator and comparator circuit which monitor the power supply voltage levels. This IC is also capable of detecting temperature variation and provide necessary protection.When the monitored voltage level drops below the threshold of the comparator, the reset output is asserted. When the timeout set by the watchdog timer expires, the watchdog output is asserted. The reset time can be adjusted by using external capacitor or resistor. The S-80844CNUA-B85T2G offers a wide range of operating temperature range from -40℃ to 85℃.The S-80844CNUA-B85T2G is designed to operate at a wide range of supply voltage, which makes it suitable for various applications. It is particularly suitable for low-voltage portable electronic applications, as it is designed to monitor and reset the power supply lines that are within its operating range. Additionally, the watchdog timer output can be used to alert the system of any possible system fault conditions.Overall, the S-80844CNUA-B85T2G is a versatile supervisor PMIC which offers power supply monitoring, reset generation and watchdog timer output. With its rugged design and the wide operating temperature range, the S-80844CNUA-B85T2G is an ideal choice for digital systems that require high-voltage tolerance and reliable performance. Thanks to its wide range of input supply levels and five-volt tolerant input levels, the S-80844CNUA-B85T2G is suitable for use in a variety of applications, including cellular phones, PDAs, PC peripheral cards, notebook PCs, and point-of-sale equipment.

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