DS1832U/T&R

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PMIC (Power Management Integrated Circuits) are essential components in power-managed designs and are used to provide a safe and efficient way to control the power flow. One of the most popular solutions in this category is the DS1832U/T&R supervisors. These Supervisors are specifically designed to protect or manage VCC (or battery voltage) and RESET signals for microprocessor or microcontroller-based systems.

The DS1832U/T&R family offers a variety of different features and benefits to designers of power-managed systems. These include pin-compatible drop-in replacements for other common supervisor product families, programmable adjustable reset thresholds and minimum reset active-low delay times, push-button reset functionality, power-on reset functionality, open drain output, optional detection of external watchdog circuit, and supervision of multiple power supplies.

The main application fields of the DS1832U/T&R Supervisors encompass a variety of fields and solutions, including computer systems, telecom systems, consumer electronics, server applications, multimedia applications and audio/video systems. In addition, they can be used to meet high-end requirements in terms of the power management of industrial and automotive systems.

The DS1832U/T&R Supervisors are based on a “fixed N-Channel Supervision MOSFET” architecture, which employs a voltage-threshold detection technique combined with a Digital Logic Block and an Output Block. This architecture achieves the desired features of a supervisory circuit in order to determine the functioning parameters of a system.

The voltage-threshold detection technique is based on the use of the N-Channel MOSFET and its calibration statistics, which is what allows the supervisor circuit to detect the VCC voltages. The Digital Logic Block is responsible for controlling the whole process. It monitors the MOSFET characteristics and also performs reset , reset-delay and reset-time-out operations. The Output Block outputs either an active-high signal or an active-low signal, depending on the power-on reset (POR) signal.

The way the DS1832U/T&R Supervisors work is very simple. When the system is powered on, the supervisor circuit senses the voltage of the VCC rail, comparing it with the pre-programmed voltage threshold. If the voltage exceeds the threshold, the supervisor circuit produces an active-high signal while, on the other hand, if the voltage is below the threshold, the supervisor outputs an active-low signal. This signal is then connected to a RESET pin of the microcontroller, resetting the hardware.

In general, the DS1832U/T&R Supervisors provide a highly advanced solution for power management, making them a sound choice for anyone that is looking to keep their system running as smoothly and efficiently as possible. With a wide variety of applications in different markets, the DS1832U/T&R family can provide the monitoring and protection you need, whatever your project.

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