LTC2900-1CDD#PBF

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The LTC2900-1CDD#PBF is a versatile monitoring device that can be used for a variety of applications. It is a Power Management Integrated Circuit (PMIC) from Linear Technology\'s Supervisors family. It is capable of monitoring multiple power rail voltages, such as input voltage, system voltage, battery voltage and other adjustable voltage rails. The device provides protection, monitoring and fail-safe protection for these power rails.

Features

• Low quiescent current: 400 nA typ
• High accuracy: ± 1.25 mV
• Wide input common-mode range: 1V to 6V
• Single-rail supply voltage operation: 2.7V to 22V
• Operates at both the commercial (-40°C to 85°C) and the industrial (-40°C to 125°C) temperature grades

Application

The LTC2900-1CDD#PFB is widely used in automotive, avionics, and other applications requiring power monitoring and fail-safe protection. It can be used to easily replace comparator-based power monitors, eliminating the accuracy issues that often result from these devices. It is widely used in smartphone battery management systems, smart meter controllers and industrial machine controllers. It can also be used for industrial process automation, solar power monitoring, data logger, smart metering and other critical applications.

Working Principle

The working principle of the LTC2900-1CDD#PFB is based on the voltage monitoring circuitry that allows it to monitor multiple power rail voltages with high accuracy. This device contains an internal reference voltage and high-bandwidth comparator that can compare each of the power rail voltages to the internal reference voltage. The voltage thresholds of the internal reference voltage can be factory programmed. When an external voltage exceeds one of the programmed thresholds, the device will generate a power-fail or power-ok signal to alert the host microcontroller.

The LTC2900-1CDD#PFB also features an adjustable timing pin that can be used to set the power-fail timeout duration. This pin can also be used to set the power-on reset duration, and the time period that the circuit must remain in the low-voltage state before the power-ok signal is generated. The device also includes open-drain N-channel FETs that can be used to reset the microcontroller when the power-fail is detected. This provides a reliable power safety solution for digital systems.

Conclusion

The LTC2900-1CDD#PFB is an advanced monitoring device that can be used for a variety of applications. It has a wide input common-mode range and a low quiescent current consumption. This PMIC can be used to easily replace comparator-based power monitors, and it also provides reliable power safety solutions for digital systems. With its wide input common-mode range and low quiescent current consumption, it is one of the top PMICs in its class.

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