DS1707EPA

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PMICs (Power Management Integrated Circuits) supervisors are widely used in multiple applications such as automotive, industrial and consumer. The DS1707EPA is a high voltage, high accuracy, low-cost supervisor from Dallas Semiconductor, manufactured using Deep Submicron CMOS technology. The device offers an extremely high input impedance with a wide input voltage range, and is also suitable for use with multiple voltage references.

The DS1707EPA was designed specifically for input undervoltage and overvoltage monitoring applications. It provides voltage monitoring in the range of 1.5V to 16V, with an accuracy of 1.5% of the monitored voltage limit (Vth). The device features an open-drain output that can be used to power-on reset a microcontroller or other peripheral, as well as generate an interrupt signal.

The working principle of the DS1707EPA is based on a differential reference circuit, which converts the input voltage into a statically adjustable voltage. This voltage is then compared to programmable voltage thresholds, both positively and negatively, to set up the overvoltage and undervoltage detection respectively. When either of the thresholds is exceeded, the comparator output is pulled low and the associated reset or interrupt signal is asserted.

The DS1707EPA provides a wide range of applications. It is widely used in systems where the input voltage needs to be monitored for undervoltage or overvoltage conditions. This includes automotive power systems, industrial power monitoring, and consumer applications such as battery monitoring and charging systems.

The device offers several features to facilitate system operations. These include reverse voltage protection, true “push-pull” reset/interrupt output, adjustable Power-On Reset time delay and Watchdog Timer, and power-on reset below specified Vth.

In summary, the DS1707EPA is a high voltage, high accuracy, low-cost supervisor, designed to monitor and protect against under- and overvoltage conditions. It features a wide input voltage range and adjustable voltage thresholds, making it ideal for a variety of applications. It also offers several features that simplify system operations, making it a valuable addition to any system where power needs to be monitored and protected.

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