DS1811-10+T&R

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PMIC, or Power Management IC, is used to control, manage and regulate power sources for various types of applications to ensure optimal and efficient power consumption. One of the important PMICs is supervisors, which are used to monitor and regulate the power supply of a system. In this article, we will discuss the application field and working principle of DS1811-10+T&R.

DS1811-10+T&R is a PMIC supervisor IC designed to offer comprehensive monitoring, control and notification to system designers. It is an ultra-low-power supervisor with an integrated temperature range of -40°C to +125°C. DS1811-10+T&R integrates a low-current start-up and reset circuit, watchdog timer, voltage monitoring circuit and high-temperature alert circuit, as well as a non-volatile temperature compensator that allows it to maintain an accurate output even in extreme temperatures. It also features a low-current override circuit on the reset output, allowing it to maintain a reset signal even when the main power is lost.

DS1811-10+T&R is suitable for a wide range of embedded system applications in the aerospace and industrial sectors, including aircraft control systems, automobile electronics, factory automation and defense applications. It can be used in systems such as motor controllers, microcontrollers, FPGAs and embedded processors to monitor and regulate power. This enables reliable operation of onboard devices, even when volatile conditions exist.

The DS1811-10+T&R has several inputs that help it monitor, control and regulate power. These inputs are the +5V logic supply, +5V reset supply and +5V override detect. It also features a low-dropout voltage regulator, which is responsible for supplying the internal voltage monitoring and reset circuits. Additionally, the watchdog timer is used to detect reset conditions and alert the user to any problems with the system.

When power is initially supplied to the system, the +5V logic supply is used to start up the supervisor IC. This voltage is monitored by the voltage monitor circuit and when the voltage level drops below the set level, the supervisor IC will activate the reset output and enter the reset state. When the +5V logic supply returns to normal, the supervisor IC will deactivate the reset output and resume operation.

Additionally, the +5V reset supply is supplied to the supervisor IC and is actively monitored. This supply is used to generate a reset signal when the voltage level drops below or rises above the set level. When the voltage level drops below the set level, the supervisor IC will immediately activate the reset output and enter the reset state to prevent further system damage.

The +5V override detect is also monitored by the supervisor IC. This supply is used to detect when the system’s power is lost and immediately override the reset output to ensure that it remains at a reset level even when the main power is lost. This prevents the system from restarting after a power loss and ensures continuous safe operation.

In addition to the inputs and outputs, DS1811-10+T&R also features an integrated temperature sensor and comparator. This helps monitor the temperature of the system and detect any over-temperature conditions. When the temperature exceeds the set limit, the supervisor IC will activate the alert circuit, alerting the user to a potential problem.

The DS1811-10+T&R also comes with a watchdog timer that is used to monitor the system and detect reset conditions. When the watchdog timer is enabled, it will constantly reset the system if the system remains in the same state for an extended period of time. This helps detect and prevent potential system problems before they can cause any damage to the system.

In conclusion, DS1811-10+T&R is a high-performance battery-powered PMIC supervisor, designed to offer comprehensive monitoring, control and notification capabilities. Its multiple inputs and outputs, low-dropout voltage regulator, voltage monitor circuit and high-temperature alert circuit enable reliable operation even in extreme conditions. Its integrated temperature sensor and comparator, as well as its watchdog timer and override circuit, ensure safe and uninterrupted operation of the system.

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