ADM6320CZ29ARJZ-R7

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PMIC - Supervisors - ADM6320CZ29ARJZ-R7 application field and working principle

The ADM6320CZ29ARJZ-R7 is a low-cost, low-power microprocessor supervisory circuit designed for a variety of consumer electronic applications. The device provides an efficient means to detect when the power supply voltage falls below the reset threshold and signals the system controller to initiate an orderly shutdown. The device also provides brown-out protection for systems operating from 3.3V and 2.5V power supplies. The device is available in the SOT23-5 and TDFN-EP packages.

The ADM6320CZ29ARJZ-R7 has a wide range of applications in consumer, automotive and industrial electronics. In consumer electronics, it is commonly used in battery-powered devices such as cell phones, cameras, and portable media players. In automotive applications, it is used in engine control systems, climate control systems, and powertrain control systems. In industrial applications, it is used in the control of process control systems and safety systems.

The working principle of the ADM6320CZ29ARJZ-R7 is simple. The device monitors the supply voltage and provides runtime accuracy of 1%. When the supply voltage falls below the reset threshold, the device will activate a reset signal to the system controller. This reset signal is buffered and amplified allowing long distance routing of the reset signal with minimal loading on the supply voltage. The reset signal is designed to be active for a minimum of 4 ms and can be configured to reset after power up, during a brown-out condition, or during a power-good condition.

The device has a minimum supply voltage of 1.8V and a maximum supply voltage of 5.5V. The device is configured by connecting a fixed reset threshold and active low power-on reset voltage to the device. It has a fixed rising VCC threshold of 2.5V and a falling VCC threshold of 1.95V. The internal reset time delay is set to 4 ms and the maximum reset pulse duration is 1 ms. The ADM6320CZ29ARJZ-R7 provides built-in watchdog timer functionality which can be enabled by connecting a pull-up resistor to the WDT pin.

The ADM6320CZ29ARJZ-R7 is an ideal solution for microprocessor supervisory circuitry. The device provides superior long-distance reset signal routing, improved jump start for any 3V or 2.5V system, and low power consumption.

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