ADM12914-1ARQZ

PMIC - Supervisors Overview

Power Management Integrated Circuit (PMIC) supervisors are key components for providing reliable power system designs for complex integrated circuits (ICs). They are designed to monitor input or output voltages and current levels, regulate power supply voltage levels, and control system power-up or power-down sequences. Supervisors help reduce design complexity and system risk by providing a one-stop shop for reliable power management solutions.

ADM12914-1ARQZ Application Field and Working Principle

The ADM12914-1ARQZ is a low-power monitoring and control IC targeted for high-voltage systems. It is a PMIC supervisor that provides system power sequencing and monitoring.

Application Fields

The ADM12914-1ARQZ has multiple applications in various systems such as:

• Consumer electronic products, including digital cameras, portable media players, and game consoles
• Server, communication, and network systems
• Industrial systems such as air-conditioning, lift, and electrical power systems
• Medical systems such as patient monitoring systems, infusion pumps, X-ray equipment, and MRI systems
• Automotive systems such as infotainment systems and battery monitoring

Working Principle

The ADM12914-1ARQZ features a high-accuracy, low-power consumption supervisor that is suitable for complex power management systems. It is capable of monitoring multiple voltages, and supports up to 65V on its two channels. It can also monitor output current levels, providing system designers with more flexibility.

It has an active-low RESET pin that is used to reset the system in case of a fault. The ADM12914-1ARQZ also features a PWROK signal that is used to indicate when the power system is ready. This signal can be used to indicate to the rest of the system that the power supply is stable, and the system is ready to operate.

The ADM12914-1ARQZ includes various Power-On-Reset (POR) and Power-Off-Reset (PFR) sequences. It is able to implement an adjustable soft-start, allowing a smooth and gradual power-up of the system. It also has an adjustable delay time, allowing designers to customize the Startup Time Delay (STC) and Enable Time Delay (ETD).

The ADM12914-1ARQZ includes various protection features against under-voltage and over-voltage. It also has temperature protection, input reverse connection protection, and short circuit protection. It is able to monitor and protect against transient events, such as load dump or fault current conditions.

Conclusion

The ADM12914-1ARQZ is a low-power PMIC supervisor suitable for power management systems in a variety of applications. It is capable of monitoring multiple voltages with high accuracy, and provides various protection features for system reliability. Additionally, it supports multiple POR and PFR sequences, as well as adjustable delay times for customizability.