S-1000N22-N4T1U

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The S-1000N22-N4T1U is a PMIC Supervisor, a type of chip used to maintain device-level monitoring and control over various components. It is a frequently employed component in systems that require complex power management. The S-1000N22-N4T1U offers numerous features to support a wide range of applications. This article provides an overview of its features, the application fields in which it is employed and its working principle.

Features and Specifications

The S-1000N22-N4T1U has various features that make it suitable for a wide range of applications. Its core purpose is to provide proactive circuit protection, for both primary and secondary power rails of the system. Its ability to detect and respond to voltage irregularities in both active and standby modes add an additional layer of protection against component level degradation or failure. In addition, the device is capable of providing a number of related services, including power sequencing and reset signal control. The following are some of the most noteworthy specifications for this particular chip:

• Detects faults of the input power rails with 5V accuracy
• Minimum voltage detection threshold of 0.125V
• Maximum response time of 0.5ms
• Programmable reset output delay times
• Operating temperature range of -40 to +85°C
• Applications include system power supply and supercapacitor-protected systems
• Input DC voltage range of 2.3V to 8.0V
• Over-current detection threshold of 210mA
• Under-voltage lockout of 1.0V

Application Fields and Examples

The S-1000N22-N4T1U is suitable for a variety of application fields. It is most commonly used to provide rapid and reliable circuit protection in applications such as automotive, industrial, commercial, and consumer engineering. In addition, it is frequently employed in supercapacitor-protected systems, due to its low-voltage detection capability.One example of the application of the S-1000N22-N4T1U is in an automotive engine control system. In such applications, the chip is used to monitor the voltage of the power rail(s). If it detects any voltages irregularities, it can quickly signal a reset signal to initiate a restart of the system. This helps ensure stable operation and prevents potential damage to sensitive components.

Working Principle

The working principle of the S-1000N22-N4T1U is relatively simple. The chip has two primary input pins: one for DC power and one for ground. When power is supplied to the device, the voltage on the DC input pin is monitored. If the voltage drops below the programmed under-voltage lockout (UVLO) level, the output reset pins will be activated. The chip\'s reset signal can remain active until the voltage returns to safe levels, or it can be configured to reset automatically after a predefined delay time.

The chip also features an open-drain output, which can be used to monitor faults of secondary power rails. The open-drain output remains in the HIGH state when no fault is detected. If a fault is detected, the output goes into the LOW state. The device also has a number of configurable settings for enabling/disabling alarms, and for setting the timing, power reset, and power state.

Conclusion

The S-1000N22-N4T1U is a PMIC Supervisor that is suitable for a variety of applications, from automotive to consumer engineering. It provides active circuit protection, by detecting voltage irregularities and responding with a reset signal. Its working principle is relatively simple, with two primary input pins for DC power and ground, and an open-drain output for monitoring secondary power rails. The device is highly configurable, with settings for enabling/disabling alarms, setting the timing, power reset, and power state.

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