DS1236S-10/T&R

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PMIC supervisors are developed to protect systems from errors that could cause damage or inconvenience, such as system reset or power-on reset. They typically monitor specific parameters to warn of system problems or initiate a corrective action and trigger reset or power-on reset if system failure or instability is detected. The DS1236S-10/T&R is an example of a Supervisor IC from Dallas Semiconductor, designed to protect systems from improper power shutdown.

Application Field:

The DS1236S-10/T&R is a power supervisor/reset IC designed for applications such as personal computers and embedded systems. The device is able to monitor two power sources, making it ideal for systems that require reliable power control. In addition to monitoring the power supply, the DS1236S-10/T&R can provide power-on reset protection during inrush current events. The device is also capable of software programming to provide different levels of reset protection.

Working Principle:

The DS1236S-10/T&R supervisor is based on an empty delay line that contains an internal voltage regulator and two comparators. The voltage regulator provides a regulated supply for the device, while the comparators compare the monitored power sources to predetermined thresholds. In normal operation, the device monitors the input power source and the internal voltage regulator. If either the input power source or the internal voltage regulator fall below the threshold level, the device will assert a reset signal.

The reset signal is generated when the monitored power sources fall below the threshold level for a predetermined amount of time. During an inrush current event, the reset signal can be delayed using the empty delay line, so that it is asserted only if the power source remains below the threshold level for a specified amount of time. The device can also be programmed to assert a power-on reset signal at power-up, to ensure the system is properly initialized.

In addition to its power monitoring and reset capabilities, the DS1236S-10/T&R also includes a wide range of other functions. The device includes built-in watchdog functionality and can also be used to detect power brownouts and voltage glitches. It also includes programmable reset resolution and reset timeout parameters, as well as a power-good and power-fail output.

The DS1236S-10/T&R is designed with an advanced level of power monitoring, reset protection, and features an industry-standard pinout for easy integration into existing systems. The device is suitable for high-reliability applications, making it an ideal choice for applications that require system protection and advanced power management.

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