DS1831DS/T&R

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PMIC - Supervisors are integrated circuits (ICs) used to reset electronic systems during cases of malfunction or incident to restore normal operation. DS1831DS/T&R is an example of such a supervisor IC. It is a precision, single-channel, low-voltage supervisor IC with a power-on reset (POR) delay and supports both pushbutton and SoftStart reset functions. This makes it ideal for use in a wide range of device applications.

The DS1831DS/T&R is a single-channel, voltage monitor supervisor IC which is suited to monitor battery-powered, 3V to 5V systems and reset them when the voltage drops below a predetermined threshold voltage. It offer operating temperature range from -40℃ to +85℃.This IC integrates a fixed-threshold detect circuit and provides open- or short-circuit protection for the reset monitor circuit which delivers a reset signal to the system when VCC drops below the desired threshold. In addition, the DS1831DS/T&R provides either a hard POR; a pushbutton reset, or a SoftStart reset function, with an adjustable restart threshold.

The DS1831DS/T&R utilizes a minimum reset delay time of 5 ms while monitoring VCC of 3.3V, ensuring that reset occurs before brown-out conditions cause corruption of system data. It provides a reset output voltage of up to 28V and features an accurate, adjustable restart threshold and maximum 5 ms reset delay time. It also utilizes a pushbutton reset or SoftStart reset feature allowing for the accurate control of power-on sequencing in the system.

This supervisor IC is typically used in battery operated systems such as digital cameras and personal digital assistants. It is also used to provide reliable restarts in automotive and telecommunications products. DS1831DS/T&R can be used to provide system stability for microcontrollers and DSPs, ensuring that the system remains reliable during reset sequences.

The working principle of DS1831DS/T&R is simple. It monitors the system voltage when the power is on and compares it with a preset threshold, usually between 1.5V and 3V. If the voltage drops below the threshold, the supervisor IC will reset the system and cut off the power supply until the system voltage rises above the preset threshold voltage. The restart threshold voltage is adjustable with the external softstart voltage divider.

Overall, the DS1831DS/T&R is a highly efficient and reliable supervisor IC, suitable for a wide variety of applications including battery-powered, 3V to 5V systems. It offers robust and reliable reset functions, a wide operating temperature range, fast reset delay times and adjustable restart thresholds. With its excellent feature set, the DS1831DS/T&R is a perfect choice for resetting devices in any situation.

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