ADM1817-10AKSZ-RL7

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PMIC – Supervisors are high performance integrated circuits that provide accurate monitoring and protection of system power. The ADM1817-10AKSZ-RL7 is one such PMIC supervisor that provides VigilantCore Application Vcc monitoring, overcurrent, thermal and overvoltage protection, while also offering temperature range and low quiescent current. This article will discuss the applications and working principle of the ADM1817-10AKSZ-RL7.

Applications

The ADM1817-10AKSZ-RL7 promises low-power, high-accuracy applications. The supervisor is designed for use in mobile and embedded systems, including smartphones, tablets, TVs and automotive electronics. It can be used in both stand-alone and networked systems.

The ADM1817-10AKSZ-RL7 offers built-in overvoltage, overcurrent, and thermal protection, making it an ideal choice for systems that require tight voltage and current control. The onboard real time clock allows for time-based operations and features external event detection. The supervisor also features integrated temperature sensing for monitoring the system’s operating temperature.

The ADM1817-10AKSZ-RL7 also offers low quiescent current and wide temperature range. The quiescent current consumption is as low as 2.5 mA, meaning the supervisor can be used in battery-powered applications. The supervisor also features a wide temperature range of -40°C to 125°C, making it an ideal choice for industrial and automotive applications.

Working Principle

The working principle of the ADM1817-10AKSZ-RL7 is very simple. The supervisor monitors the application Vcc supply voltage, and starts monitoring immediately after reset to ensure system stability. If the voltage decreases below the lower reset threshold level, the supervisor will drive the RESET# pin to a low level and reset the system. Similarly, if the voltage increases above the upper reset threshold level, the supervisor will drive the RESET# pin to a high level and reset the system.

The ADM1817-10AKSZ-RL7 also features built-in overvoltage, overcurrent and thermal protection. The overvoltage protection is enabled by a pair of comparators that monitor the application Vcc supply voltage. If the voltage increases above the upper overvoltage threshold the supervisor will drive the OVP pin to a high level, triggering an interrupt and resetting the system. Similarly, if the voltage decreases below the lower overvoltage threshold the supervisor will drive the OVP pin to a low level and reset the system.

The overcurrent protection is enabled by a pair of comparators that monitor the application Vcc current. If the current increases above the upper overcurrent threshold, the supervisor will drive the OCP pin to a high level and reset the system. Similarly, if the current decreases below the lower overcurrent threshold the supervisor will drive the OCP pin to a low level, triggering an interrupt if enabled.

The ADM1817-10AKSZ-RL7 also features a built-in thermal protection circuit. The thermal protection operates by monitoring the temperature of the application Vcc via an integrated temperature sensor. If the temperature increases above the upper temperature threshold, the supervisor will drive the THERM pin to a high level, triggering an interrupt and resetting the system.

Conclusion

The ADM1817-10AKSZ-RL7 is a PMIC - Supervisors designed for low-power, high-accuracy applications. It features VigilantCore Application Vcc monitoring, overvoltage, overcurrent, and thermal protection and has a wide temperature range and a low quiescent current. The working principle of the ADM1817-10AKSZ-RL7 consists of monitoring the application Vcc supply voltage and triggering a reset signal if the voltage falls below the lower reset threshold level or increases above the upper reset threshold level. It also features built-in overvoltage, overcurrent, and thermal protection.

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