ISL8702IBZ

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power Management Integrated Circuits (PMICs) have become an essential component in modern electronics and are increasingly needed in a wide variety of applications. The ISL8702IBZ is a special type of PMIC known as a supervisor. Supervisors are responsible for monitoring and maintaining system power rails, supply voltages, and power sequencing. This article will provide an overview of the applications and working principles of the ISL8702IBZ supervisor.

Applications

The ISL8702IBZ is a dual-channel low-voltage supervisor that is designed to provide precision voltage monitoring, power-up sequencing, and control functionality in a variety of applications. Common applications include high-efficiency power management systems, point-of-load power supplies, and current-mode boost converters. The ISL8702IBZ is also suited for communication and embedded systems such as cellular phones, digital cameras, and motor control systems. It provides greater than 200mV accuracy over the temperature range of -40°C to 125°C and is housed in a 16-pin SOIC package.

Working Principle

The ISL8702IBZ is a voltage-sensitive supervisory circuit designed to monitor up to two power supply rails. In the normal operating mode, it continually monitors the designated power supply rail for the presence of the programmed threshold voltage. When the threshold voltage is exceeded, the ISL8702IBZ asserts the power-on reset output and it remains asserted until the voltage drops below the start-up threshold voltage. The reset output can then be used by the microcontroller or other logic circuits to perform additional power supply sequencing functions such as allowing additional voltages such as VDD_AVDD, VDD_DVDD, or VDD_SVPa to rise. The reset assertion is also signaled to the analog stages of any voltage regulator or power converter to ensure proper sequencing of the power supply rails.

The ISL8702IBZ can also be used to ensure the safety of any system components by monitoring two separate output power rails and quickly signaling a power-down or power-off sequence when specified conditions are met. It includes two power-good outputs that can be used to signal proper power-up or power-down conditions to any other components in the system. The power-good flags are asserted as soon as the circuit begins its monitoring of the input voltage and de-asserted when either voltage falls below its defined threshold.

Conclusion

The ISL8702IBZ is a versatile Linux-based supervisor suitable for a wide range of power management applications. Its precise voltage monitoring accuracy and power-good flags make it an ideal solution for high-efficiency power management systems, point-of-load power supplies, and current-mode boost converters. By carefully monitoring and sequencing the supply voltages and power rails, the ISL8702IBZ helps to ensure a robust and reliable system.

The specific data is subject to PDF, and the above content is for reference