Maxim Integrated MAX6746LKA29+T Microprocessor Supervisory Circuit

The MAX6746LKA29+T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 2.9V power supply voltage.

Featuring a precision voltage monitor, this device is tailored to keep a vigilant eye on the system's power supply. It ensures that the microprocessor is reset to a known state during power-up, power-down, and brownout conditions. The reset output remains asserted for a minimum of 140ms after V_CC has risen above the reset voltage threshold, providing ample time for the system to stabilize.

The MAX6746LKA29+T comes in a compact SOT-23 package, making it ideal for space-constrained applications. Its low supply current of 5.5µA (typical) is especially beneficial for portable and battery-powered equipment where power conservation is paramount.

Key features of the MAX6746LKA29+T include:

• Factory-trimmed V_CC reset threshold suitable for 2.9V-powered circuits
• Manual reset input for added system control
• Low quiescent current, ideal for battery-powered applications
• Guaranteed reset valid to V_CC = 1V
• 140ms min reset timeout period
• Immune to short V_CC transients
• Operating temperature range from -40°C to +125°C

This supervisory circuit is an excellent choice for use in a variety of applications, including portable/battery-powered equipment, computers, controllers, intelligent instruments, critical µP and µC power monitoring, and automotive systems. The MAX6746LKA29+T ensures that all these systems maintain their integrity and operate reliably under variable and unpredictable power conditions.

Maxim Integrated's commitment to quality and reliability is evident in this product, making the MAX6746LKA29+T a dependable component for safeguarding critical data and ensuring consistent system operation.