MAX691ACSE+

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An integrated circuit (IC) supervisor is an active device used in microprocessor circuit applications and other low-voltage, high-current circuits. It performs specific functions, mainly surrounding the monitoring of power supply voltage levels, as well as providing control or a reset output when power on is detected. The MAX691ACSE+ is an example of an IC supervisor manufactured by MAXIM Integrated. This IC supervisor provides fast, accurate protection for ICs in a wide variety of applications including personal computers, video and audio equipment, automotive, and other low-power, high-current applications. This article will discuss the field of application, functional principles and features of the MAX691ACSE+.

Applications of MAX691ACSE+ Supervisor IC

The MAX691ACSE+ supervisor IC is a low-power, high-current IC that provides precision monitoring, resetting, and control functions for microprocessors and other related circuits. It is ideal for use in applications that require a low power, yet robust power supply. It has been designed for use in applications such as personal computers, video/audio equipment, automotive, and other low-power, high-current applications requiring precise voltage monitoring. The MAX691ACSE+ is well-suited for single- or multiple-supply systems, and it is capable of detecting overvoltage and undervoltage conditions in both discrete supply systems and multiple-supply systems.

Functional Principles of MAX691ACSE+ Supervisor IC

The MAX691ACSE+ supervisor IC is designed to monitor multiple-supply systems, as well as discrete supplies. It includes a built-in, precision voltage reference and an adjustable 3.5V to 28V supply range that makes it suitable for a wide variety of applications. The MAX691ACSE+ features an on-chip comparator that monitors up to five external voltage thresholds. It also includes additional circuitry to detect undervoltage and overvoltage conditions. When either of these conditions is detected, the IC automatically asserts a reset output, which can be used to reset microcontrollers or other processors.

In addition to monitoring the external supplies, the MAX691ACSE+ can also be used to provide power-on reset and reset latch. The IC also supports both manual and automatic reset functions. The manual reset can be initiated either by a logic signal or an external trigger, such as an open/closed switch. The automatic reset function is provided by an internal timer and reset logic circuit, which can be programmed to reset an IC after a preset delay regardless of the logic level at its input. The reset timer has a minimum delay of 12ms, which can be adjusted in the range of 40ms to 1s.

Features of MAX691ACSE+ Supervisor IC

The MAX691ACSE+ supervisor IC delivers outstanding features that make it ideal for use in a wide range of applications. It includes a built-in voltage reference and adjustable 3.5V to 28V supply range. The IC provides overvoltage and undervoltage detection and provides an accurate reset output. The automated power-on reset and reset latch provide easy monitoring of supply rails and reliable reset functionality. The flexible reset timer can be programmed to reset an IC after a preset delay. The MAX691ACSE+ requires a low operating current of just 7μA, making it well-suited for low-power applications. The IC also features high immunity against noise and EMI interference.

Conclusion

The MAX691ACSE+ supervisor IC provides robust protection for ICs in a range of different applications. It monitors up to five external voltage thresholds and provides overvoltage and undervoltage detection. The on-chip comparator, integrated precision voltage reference, and internal reset timer provide accurate protection and reset functionality. The IC also offers low operating current, making it well-suited for low-power applications. The MAX691ACSE+ is an ideal IC supervisor for precision power supply monitoring, resetting, and control.

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