LTC2918CMS-B1#PBF

PMIC - Supervisors: LTC2918CMS-B1#PBF

The LTC2918CMS-B1#PBF is a multi-function supervisor device with built-in push button reset. It is designed to provide microprocessor supervisory functions, offering both open-drain and push button reset output in a single device. It can also be used for general purpose IO circuits, providing a combination of push button reset and open-drain reset outputs which are optimized for low-power operation.

Application Field

The LTC2918CMS-B1#PBF is used in a wide variety of applications, from automotive to industrial, from medical equipment to consumer electronics. It is known for its reliable, robust and cost-effective solutions for the highest quality supervising products available in the market.

The LTC2918CMS-B1#PBF is typically used as a watchdog timer in industrial processors and controllers, and is also capable of providing safety and protection functions in automotive and medical equipment. It also offers a combination of push button reset and open-drain reset outputs which are optimized for low-power operation in consumer-electronics applications.

In automotive applications, the LTC2918CMS-B1#PBF is used to monitor the voltage input of car batteries and provide overvoltage or undervoltage protection to the onboard electronics. In medical applications, the device can be used to detect when a patient\'s vital signs have suddenly changed, and can trigger an alarm or alert to the medical staff, protecting the patient\'s health. Additionally, in consumer electronics, the LTC2918CMS-B1#PBF can be used to provide power cycling for LCD monitors, to prevent the screen from "buzzing" due to an over-amplified current draw.

Working Principle

The LTC2918CMS-B1#PBF is a voltage supervisor and monitoring device, with built-in push button reset. It is designed to sense a specified input voltage and provide two types of outputs: a push button reset output and an open-drain reset output.

The device has an adjustable threshold voltage, with a hysteresis of 10mV. At power-on, the device will pull the push button reset output high, initiating a reset pulse. The open-drain reset output is also pulled high during power-on, releasing after 400ms (programmable). If the input voltage falls below the threshold voltage, the device will pull the push button reset output low, initiating a reset.

In addition to the reset function, the LTC2918CMS-B1#PBF also offers a Supervisor interrupt output, which can be used to trigger an interrupt when the input voltage falls below the threshold voltage. This output can also be used to monitor the system’s supply voltage and trigger a low-voltage interrupt as necessary.

The LTC2918CMS-B1#PBF can also detect overvoltage and undervoltage conditions, and can be programmed to respond with the appropriate action. Additionally, the device can detect the presence of an AC power source, and can be used to ensure that internal microprocessors are not powered unless AC power is present.

The LTC2918CMS-B1#PBF is an extremely useful device, capable of providing microprocessor supervisory functions, open-drain reset, and push button reset in a single package. It is well-suited for use in a wide variety of industrial, automotive, medical, and consumer electronics applications.