Maxim Integrated MXD1818UR29+T MicroMonitor IC

The Maxim Integrated MXD1818UR29+T is a highly reliable, compact microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a crucial safeguard for systems that require precise power management and supervision, ensuring that the system operates correctly even under power fault conditions. This particular device is ideal for battery-powered equipment, computers, controllers, and intelligent instruments where maintaining the integrity of the operational parameters is essential.

The MXD1818UR29+T asserts a reset signal whenever the VCC supply voltage declines below the factory-set reset threshold, holding the reset condition until the supply voltage returns to an acceptable level and stabilizes. The reset output remains asserted for a reset timeout period after VCC has risen above the reset threshold to ensure the system has adequate time to stabilize after a power fault.

Offering a low supply current of only 1.6µA, which is crucial for battery-operated devices, this microMonitor IC helps in extending the battery life. The device operates over a wide voltage range from 1.0V to 5.5V, making it versatile for various applications. The factory-set reset threshold for the MXD1818UR29+T is 2.93V, and it comes in a compact, 3-pin SOT-23 package, which is suitable for space-constrained applications.

Key features of the MXD1818UR29+T include:

• Factory-set VCC reset threshold voltage of 2.93V
• Low supply current of 1.6µA ideal for battery-powered applications
• Guaranteed reset valid to VCC = 1.0V
• Reset timeout period of 140ms (min) ensures system stability
• Wide operating temperature range of -40°C to +125°C suitable for harsh environments
• Immune to short VCC transients
• RoHS compliant and lead-free for environmental considerations

The device is available in tape and reel format (denoted by the "+T" suffix) for automated assembly processes, which is a significant advantage for mass production environments. By integrating the MXD1818UR29+T into your system, you can enhance the reliability and stability of your product, ensuring that it maintains proper functionality and provides a consistent user experience.