DS1817R-20+T&R

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DS1817R-20+T&R is a digital supervisor with a maximum supply current of 100µA, plus a tracking output for tracking up to two external voltage inputs. This little component combines a supervisor, tracking output, and reset circuit, making it ideal for all sorts of power management applications, from embedded systems such as set-top boxes, handsets, and other low voltage systems to industrial control systems. Its fast trip times, plus the fact that it Integrative with Power Management ICs (PMICs), mean that it can provide the necessary protection when power is misused or abused. Here is a look at the application fields and working principles of the DS1817R-20+T&R.

DS1817R-20+T&R Application Fields

The DS1818R-20+T&R can be used in a wide range of applications that use power management ICs such as portable electronics, automotive, and industrial control systems. The reset circuit can provide reset signals under abnormal conditions, such as overvoltages, undervoltages, current faults, and shorts. The tracking output can be used to track up to two external voltage inputs, which can be used in applications where multiple voltage monitoring is required, and the supervisor circuit can be used for overcurrent protection, reverse polarity protection, and other protection mechanisms.

Other applications for the DS1817R-20+T&R include protected memory backup, battery monitor, and set-top boxes. The protective memory backup makes sure that all data stored in the device manges to be stored securely in case of power outages, while the battery monitor can be used to detect low battery levels in mobile devices. The set-top boxes use the DS1817R-20+T&R to provide power failure reset and power sequencing reset, among other things.

DS1817R-20+T&R Working Principle

The DS1817R-20+T&R uses a saml of advanced features combined with low-power operation, making it suitable for use in a variety of power management applications. The reset circuit consists of two signal pins, an overvoltage/undervoltage signal (OV/UV), and a reset output (RESET), and it can provide reset signals for a wide range of conditions. The tracking output consists of two signal pins, a voltage input (VIN) and a tracking output (TOUT), and it can be used to monitor two independent voltage inputs and provide a reset signal if either input goes above or below the programmed thresholds.

The supervisor circuit is used for over-current protection and reverse polarity protection. It consists of two signal pins, a Monitoring Input (MIN) and a To Enable (EN) output. It can detect over-current and reverse polarity conditions and provide a reset signal when these conditions are detected. The supervisor also has a power-on reset (POR) function, which can be used to provide a reset signal when power is applied to the device.

In addition to all these features, the DS1817R-20+T&R also includes a temperature-sensing input (TSEN) which can be used to shut down the device in case of an over-temperature condition. This feature ensures that the device does not overheat, preventing damage and possible failure.

The DS1817R-20+T&R is a versatile and reliable digital supervisor that combines advanced features with low-power operation to provide superior power management solutions. Its wide range of applications make it a useful tool for embedded systems, automotive, and industrial applications. Its quick trip times and integration with PMICs make it an ideal choice for overcurrent, reverse polarity, and other forms of protection.

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