Linear Technology LTC1921IS8 Dual Supply Monitor

The LTC1921IS8 is a highly reliable dual supply monitor designed to ensure the stability and functionality of system voltages. Manufactured by Linear Technology, now part of Analog Devices, this component is engineered to monitor two supply voltages that are critical to the performance of electronic systems.

This supply monitor is housed in a compact 8-lead SOIC package, making it an ideal choice for space-constrained applications. Its small form factor belies its robust feature set, which includes precision monitoring for 5V, 3.3V, 2.5V, and adjustable voltage thresholds. The LTC1921IS8 ensures that systems operate within their designated voltage parameters, providing a crucial safeguard against voltage-related failures.

The LTC1921IS8 offers a range of features that make it a versatile solution for supply monitoring. It includes a glitch filter to avoid false triggering on noisy supply lines, which is essential in maintaining system stability. Additionally, the monitor provides a 200ms reset timeout period, ensuring sufficient time for system voltages to stabilize before normal operation resumes.

One of the standout features of the LTC1921IS8 is its low power consumption. With a quiescent current of just 30µA, it is an energy-efficient choice for portable and battery-operated devices. This low power draw extends the battery life of applications, making it an economical choice for long-term deployment.

The dual monitoring capability of the LTC1921IS8 allows for simultaneous tracking of two voltages, which is particularly useful for systems that rely on multiple power sources. The device’s outputs can be used to trigger a microprocessor reset or other fault management systems when a monitored supply falls out of the acceptable range.

In summary, the LTC1921IS8 from Linear Technology is a versatile, low-power dual supply monitor that provides critical protection for electronic systems. Its accuracy, reliability, and compact size make it an excellent choice for a wide array of applications, from industrial controls to consumer electronics.