S-1003NB21I-I6T1U

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Introduction

The S-1003NB21I-I6T1U is a PMIC (Power Management Integrated Circuit) Supervisor designed to monitor, stabilize, and provide a wide range of protection functions for electronic systems. The S-1003NB21I-I6T1U is a low-voltage, CMOS based supervisor, featuring supply voltage detection, full power-fail/glitch detect, under/over-voltage protect, adjustable initial delay, manual reset, watchdog timer, and voltage supervisor with reset output. This PMIC supervisor has a wide range of application field and its working principle is based on it\'s chip structure, that mainly includes supply voltage monitoring, brown-out protection, and system reset. This article will discuss the application field and working principle of the S-1003NB21I-I6T1U.

Application Field

The S-1003NB21I-I6T1U PMIC supervisor can be used in a wide range of applications, including but not limited to industrial control and automation, medical equipment, automotive systems, LED lighting systems, and home audio-video products. It is ideally suited for monitoring, controlling, and providing system reset and protection functions for electronic systems. Examples of its use include supply rail sequencing, power supply sequencing, and overvoltage/undervoltage protection, allowing users to control the start-up of different systems, provide a clean power supply, and protect various onboard components. It also supports multiple reset pulse widths, providing resilient protection and improved longevity.

Chip Structure

The S-1003NB21I-I6T1U was designed around a low-voltage, CMOS-based architecture for improved performance and efficiency. The PMIC supervisor includes integrated voltage detection, overvoltage/undervoltage protection, system reset, power-Fail/glitch detect, manual reset, watchdog timer, and voltage supervisor with reset output. Additionally, the supervisor supports an optional watchdog output, which can provide a stronger sense of security by detecting system lock-up. It is rated for a voltage range of 2.4V to 5.5V, with a maximum current load of 2mA.

Working Principle

The S-1003NB21I-I6T1U device provides a wide range of protection functions which are based on its chip structure. The device is designed to detect the inrush current of power-up and the lower voltage condition of power-down. When the detect voltage falls below or above the set threshold, the device will automatically pull the reset pin, which stops system clock and all circuits of the system, thus protects the system from potential damage. It can detect voltage fluctuation for over/under-voltage protection. In addition, the device provides a manual reset pin, which is also designed to safeguard the system. When the manual reset is pulled low, the device will reset the system, thus allowing users to reboot the system if required.

Conclusion

The S-1003NB21I-I6T1U is a PMIC (Power Management Integrated Circuit) Supervisor designed to monitor, stabilize, and provide a wide range of protection functions for electronic systems. The performance of the device is based on its integrated low-voltage, CMOS-based architecture, which allows it to detect voltage fluctuation for over/under-voltage protection, pull reset pin condition for safe shutdown, and support multiple reset pulse widths. All these features make the S-1003NB21I-I6T1U suitable for a variety of applications, from industrial control and automation to home audio-video products, and it is guaranteed to offer enhanced performance and longevity for any system.

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