AZ7033Z-E1

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Azoteq’s AZ7033Z-E1 is a supervisory circuit, also known as an "overvoltage device", which is usually used as an input signal voltage monitor in power management and power supplies. The AZ7033Z-E1 has several features including adjustable power-on reset (POR), adjustable power-off reset (POF), adjustable power-supply-under-voltage (PSUV) reset, plus power and system reset outputs. AZ7033Z-E1 is manufactured in a tiny 3-mm × 3-mm lead-free, RoHS-compliant, 16-pin QFN package.

The AZ7033Z-E1 monitors up to four separate power sources, that can be configured with input voltage thresholds independently. It optionally features a power-on reset, power-on suspend output, and power-down interrupt output functionality. This gives system designers great flexibility in developing a power supply system that meets the needs of their application.

The basic working principle of the AZ7033Z-E1 is to compare the input voltage with pre-programmed trip points, via internal resistor dividers. The trip points can be adjusted based on the application requirements. When the input voltage reaches the threshold, the AZ7033Z-E1 will take action to reset the system and prevent it from further damages. Here are the two main types of reset actions supported by the AZ7033Z-E1:

Power-on reset (POR):The POR feature is designed to protect the system from startup failures. When the power is switched on, if the input has not reached the threshold, then the AZ7033Z-E1 will reset the system. This provides extra protection to prevent unexpected damages or data loss.

Power-off reset (POF):The POF feature is designed to protect the system from shutting down unexpectedly. When the power is switched off, if the voltage has not reached a pre-programmed threshold, then the AZ7033Z-E1 will reset the system and protect it from shutting down unexpectedly.

The AZ7033Z-E1 also has a unique power-supply-under-voltage (PSUV) reset feature. This feature provides an additional layer of protection against power glitches or voltage drops below the threshold. When the input voltage drops below the threshold, the AZ7033Z-E1 will reset the system and protect it from further damage.

The AZ7033Z-E1 is a powerful and highly versatile supervisory circuit. Its wide range of features and its tiny QFN package make it an ideal choice for applications requiring a reliable, stable and adjustable reset system. Its wide range of features, combined with its low current consumption, makes it an ideal choice for battery-powered applications.

With the AZ7033Z-E1, designers have complete control over the reset conditions and parameters, which allows them to configure the system based on their specific needs. In addition, the AZ7033Z-E1 provides integrated ESD protection and noise immunity, which helps protect the system from dielectric breakdown and sudden voltage surges.

The AZ7033Z-E1 is a great solution for a variety of applications, including consumer, automotive, industrial, and medical applications. It is well-suited for applications in which voltage monitor and reset conditions need to be adjusted frequently or where system reliability and robust protection are of utmost importance.

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