S-1003NB37I-M5T1U

Series:	S-1003
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	3.7V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5

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Introduction

Modern embedded systems require the ability to intelligently detect and respond to various conditions in their operating environment. This is often achieved through the use of specialized devices known as PMICs (Power Management Integrated Circuits). PMICs are designed to monitor various system parameters and respond to changes in these parameters by controlling various aspects of power supply.One of the simplest types of PMICs are supervisors, which are used to monitor specific signals or voltage levels from external sources. The S-1003NB37I-M5T1U is a supervisor IC designed for mobile applications, with a wide range of monitoring and control features. In this article, we will discuss the application field and working principles of the S-1003NB37I-M5T1U supervisor IC.

Application Field

The S-1003NB37I-M5T1U was designed for mobile applications and is ideal for portable electronic devices such as notebook computers, tablets, and mobile phones. The IC can also be used in other applications, such as automotive, industrial and medical.In mobile applications, the IC is used to regulate the voltage levels of various system signals. This can be done directly by the IC itself, or by providing control signals to external power management ICs (PMICs). The IC is also capable of providing various levels of protection against surges, over-voltages, and other over-current conditions.The IC is designed to operate over a wide range of temperatures, typically -40 to 125C, making it ideal for portable and automotive applications.

Working Principle

The S-1003NB37I-M5T1U supervisor IC operates as follows: First, the IC monitors the voltage levels of four external signals, each of which can be set to be either high or low for the purpose of a system watch-dog timer. When the voltage of any of these signals falls outside of the predetermined values, the IC immediately provides a reset signal to the system.In addition, the IC contains a comparator that compares the voltages on two of the external signals and provides a notify signal when the two voltages are not equal. This allows the system to be monitored over time and any discrepancies between the voltages of the two signals can be immediately detected and responded to.Finally, the IC contains an output stage that can be configured to provide different control signals to an external PMIC. This allows the IC to control the voltage of various system components, such as battery charging and power management.

Conclusion

The S-1003NB37I-M5T1U supervisor IC is a versatile, yet simple device that is capable of providing a range of monitoring and control functions for mobile and automotive applications. The device can be used to monitor the voltage levels of four external signals and respond accordingly with reset or notification signals. It is also capable of providing control signals to an external PMIC in order to regulate the voltage levels of various system components.

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