ADM693AR-REEL

PMIC - Supervisors

A power management IC (PMIC) is a type of integrated circuit (IC) designed to be embedded onto public and private circuits to manage power requirements. One type of PMIC is a supervisor IC, which is designed to monitor voltage, temperature and current levels, as well as other conditions, within a system. The ADM693AR-REEL is an example of a supervisor IC.

Application Field

The ADM693AR-REEL is used in a variety of different applications, including industrial and consumer-oriented devices. The IC’s flexibility allows it to be used in many different types of products that require voltage supervision, including: embedded systems; telecommunications systems; automotive electronics; consumer electronics such as cameras, displays, and audio devices; and medical systems. Additionally, the IC is also an ideal choice for use in battery-powered systems and other low-voltage designs.

Features and Benefits

The ADM693AR-REEL provides several features, including a wide reset button range, adjustable reset voltage and delay, precision error detection threshold, and adjustable reset and active-low lockout. Additionally, its small 6-pin SOT-23 package is ideal for compact applications, as it saves on both power and design space. This IC supports multiple supply voltages ranging from 1.4V to 5.5V and is designed for use within temperatures ranging from -40°C to +85°C. Furthermore, the IC is a RoHS-compliant device, meaning it is compliant with the European Union’s policy on the restriction of the use of certain hazardous substances in electrical and electronic equipment.

Working Principle

The working principle of the ADM693AR-REEL is based on a voltage-comparator and hysteresis resistor circuit. This circuit monitors the supply voltage and looks for undervoltage and overvoltage protection. If either of these conditions is detected, the circuit will trigger the reset function to shut down the system and prevent damage to the equipment.

When the normal operating voltage is below the reset voltage, the IC’s circuit will generate a reset. This will result in both the RESET output and RESETB output of the IC being connected to the inactive level. This can be used to force a system shutdown, or to alert the system or user about the wrong voltage condition. At the same time, the RESET output can also be connected to another microcontroller to execute additional operations.

When the normal operating voltage is above the reset voltage, the RESET and RESETB outputs of the IC will be connected to the active level. At this point, the hysteresis resistor circuit will maintain the active level while the normal operating voltage remains above the reset voltage. When the voltage drops below the reset voltage, the reset will be triggered, and the RESET and RESETB outputs will return to the inactive level.

Conclusion

The ADM693AR-REEL is a PMIC supervisor IC that is suitable for a number of different applications. Its features, such as its wide reset button range, adjustable reset voltage and delay, and adjustable reset and active-low lockout, make it an ideal choice for low-voltage designs. It has a wide temperature range and is RoHS-compliant, making it a safe and reliable choice. Its working principle is based on a voltage-comparator and hysteresis resistor circuit, ensuring accurate monitoring of the supply voltage, and allowing it to detect both undervoltage and overvoltage protection.