S-80938CLNB-G68T2G

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Power Management Integrated Circuits (PMICs) are increasingly found in electronic devices used in a variety of applications, from computers and medical instruments to automotive systems and consumer products. Supervisors are one kind of these PMICs which are used to protect sensitive electronic circuits from damage caused by sudden power loss, voltage or current overloads, and over-temperature conditions. Supervisors usually feed back the output voltage to a local microcontroller, and if necessary, through the microcontroller, to a host processor. This allows for a better control of the overall system power management.

One example of a supervisor is the S-80938CLNB-G68T2G, which is a single-channel voltage monitoring supervisor from Seiko Semiconductor. It features an analog voltage monitor and a low power shutdown (LPSD) circuit, allowing the device to detect the output voltage and stay in low power mode until stable conditions are met.

The S-80938CLNB-G68T2G is a mixed-signal integrated device containing both digital and analogue components. It utilises two voltage detectors, one for normal feedback control and the other for overvoltage/undervoltage protection. The first detector is used to detect whether the output voltage is within the range of default minimum and maximum values. If the voltage falls outside this range, the second detector turns on and the LPSD function is activated, shutting the system down until stable conditions are restored.

The adjustable reset delay time of S-80938CLNB-G68T2G enables slower reset for more precise voltage control. This ensures the output voltage does not drop too low and allows the system to stabilize faster during abrupt changes in power conditions, especially during heavy load switching.

The S-80938CLNB-G68T2G is designed to work with a simple external configuration and requires minimal components. It is designed to be used in embedded systems, such as personal computers (PCs) and tablets, that use digital voltage controllers, making it ideal for applications that require precise voltage monitoring and control. As it is very low power, is suitable for use in battery-powered or energy-efficient systems.

The S-80938CLNB-G68T2G can operate from a wide supply voltage range from 2.2V to 5.5V, making it suitable for use in applications that require greater voltage tolerance, such as automotive and industrial systems. It has a wide temperature range from -40°C to +125°C and is RoHS compliant.

The S-80938CLNB-G68T2G provides a simple solution for voltage monitoring and protection, and is a great choice for applications where high accuracy, wide voltage range operation and low power consumption are required. Its ability to detect both overvoltage and undervoltage conditions makes it ideal for embedded applications, allowing designers to easily add voltage monitoring and protection functions while saving on space and power.

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