ADM809LARTZ-REEL

PMIC - Supervisors

ADM809LARTZ-REEL is a series of low-power reset and watchdog timers that monitor a wide range of voltage levels. It integrates a reset controller, a watchdog timer, an optional pull-up resistor, and other features into a single package. Additionally, the ADM809LARTZ-REEL is designed to be compatible with 5 V, 3.3 V, and 2.5 V voltage regulators. This application note provides an overview of the ADM809LARTZ-REEL series, its application fields, and its working principle.

Application Fields

The ADM809LARTZ-REEL is suitable for a wide range of applications, including communication and industrial applications as well as automotive, power, and medical applications. It can be used for system level monitoring, microprocessor/digital signal processor reset, remote control functionality, system-level timer functionality, fault protection monitoring, LED control and dimming, and more.

The ADM809LARTZ-REEL is also well-suited for power systems requiring accurate current measurement and monitoring. This includes battery-powered and other low-power systems, as well as larger power supplies. With its ultra-low power consumption, the ADM809LARTZ-REEL takes up very little board space, allowing designers to design cost-effective lithium-ion battery pack chargers and protection circuits.

Working Principle

The ADM809LARTZ-REEL is a low-power reset and watchdog timer that monitors a wide range of input voltages. It features a reset controller, which monitors the input voltage and asserts a reset signal when the input voltage falls below the set threshold voltage. This reset signal is used to reset the microprocessor or digital signal processor, thus establishing a safe state for the system.

The ADM809LARTZ-REEL also includes a watchdog timer, which is used for system monitoring. The watchdog timer can be programmed to a particular time interval, and an interrupt signal is generated if the system does not reset itself within that interval. This signal can then be used to reset the system and prevent runaway operations.

The ADM809LARTZ-REEL also includes a programmable pull-up resistor to provide an additional source of voltage when the input voltage drops below a certain threshold. This feature allows the device to be used in low-voltage applications where precise operation is required.

The ADM809LARTZ-REEL is designed to be highly accurate and reliable. It features a precise, integrated voltage reference, which helps ensure that the device can always accurately detect input voltage levels, and a low-leakage internal power switch, which allows designers to easily integrate the reset and watchdog timer into their system at minimal system power loss.

The ADM809LARTZ-REEL is also designed for use in a variety of temperature ranges, from -40°C to +85°C. This allows it to be used in a wide variety of applications, from portable devices to industrial and automotive systems.

Overall, the ADM809LARTZ-REEL is a low-power reset and watchdog timer that is ideal for a wide range of applications. Its accurate, reliable operation and low-power consumption make it a great choice for designers looking for a cost-effective solution for system monitoring and reset functionality.