ADM6315-29D3ARTZR7

The ADM6315-29D3ARTZR7 is a voltage supervisor and supervisor IC from Analog Devices. It is a Precision Micropower Polyfuse Supervisory Circuit designed to monitor power supply and battery voltages, provide power-on reset signals, and alert power failure or the presence of an external voltage source. The device is available in surface-mount 8-pin SOIC package, operates in temperatures ranging from -40°C to +125°C.

The ADM6315-29D3ARTZR7 is part of the Supervisory Circuit family of products. It provides overvoltage, undervoltage, and power-on reset protective features, in a single small device. The device\'s internal charge pump provides large input current capability, enabling the device to support large capacitive loads. The ADM6315-29D3ARTZR7 also contains an internal temperature, supply, and open drain fault detection circuitry to protect against brownouts, overvoltages, under voltages, and thermal events.

The general purpose of the ADM6315-29D3ARTZR7 is to provide power-on reset delays, power-on reset signals, and power-on indication (LED) signals from a battery back-up supply, in the event of power failure. It also has the capability of monitoring potential differentials between two voltage systems, detecting a polarity reversal of the input, and providing a reset signal for overvoltage and undervoltage protection.

The ADM6315-29D3ARTZR7 includes additional features such as a LED output, an "enable" function that allows the power-on reset delay to be disabled, and an "auto-resume" timeout reset function. This allows the device to "auto-resume" and restore normal operation after passing through a period of extended undervoltage or overvoltage (for select parts only).

The working principle of the ADM6315-29D3ARTZR7 is centered around its precision micropower polyfuse. The device contains two accurately matched p-type and n-type FETs that serve to detect over voltage and under voltage. When the incoming voltage exceeds the preset under voltage thresholds (or when the incoming voltage is lower than the preset overvoltage thresholds), the FETs trip and pull the reset input (RES) pin low. This triggers the reset timer, which is then used to restore normal operation. During reset, the RES output pin remains low, signaling a reset condition.

The ADM6315-29D3ARTZR7 is ideal for use in a variety of system applications, including low power electronics and embedded applications such as industrial controls, white goods, automotive and instrumentation. It is also used in battery operated products and maintenance and test equipment that require accuracy and reliability. Due to its precision, low power operation and fast response time, the device can also be used in various telecom and computer/storage applications. The device also features an internal thermal shut-down output (TSD) feature, to ensure device safety in extreme temperature conditions.

In summary, the ADM6315-29D3ARTZR7 is a Micropower Polyfuse Supervisory Circuit designed to monitor power supply & battery voltages, provide power-on reset signals, and alert power failure or the presence of an external voltage source. Its precision operation and low power operation makes it ideal for a variety of applications ranging from industrial & automotive to computers & storage. Additionally, its internal temperature, supply, and open drain fault detection circuitry provide protection against overvoltages, undervoltages, and thermal events.