Maxim Integrated MAX6837HXSD3+T Microprocessor Voltage Supervisors

The MAX6837HXSD3+T from Maxim Integrated is a high-quality microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with 3.3V-powered circuits.

This compact supervisory IC ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6837 series features a variety of factory-trimmed threshold voltages, and the MAX6837HXSD3+T variant specifically monitors a 3.3V power supply. Its precision voltage monitoring capability ensures that the system microprocessor is reset with a clean start, preventing any malfunction due to power supply inconsistencies.

The device features an active-low reset output, which remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level, providing ample time for the system to stabilize before the processor starts. The reset output is guaranteed to be in the correct state for VCC down to 1V.

Key features of the MAX6837HXSD3+T include:

• Factory-trimmed VCC reset threshold voltage for 3.3V systems
• 140ms (min) reset timeout delay ensures system readiness
• Low supply current of 1.6µA (typical) for power efficiency
• Guaranteed reset valid to VCC = 1V for low-voltage operation
• No external components required for ease of integration
• Small SOT-23 package suitable for space-constrained applications

These features make the MAX6837HXSD3+T an ideal choice for portable/battery-powered equipment, computers, controllers, intelligent instruments, and critical µP power monitoring. Its precision and reliability are ensured by Maxim Integrated's commitment to high-quality semiconductor solutions, making it a dependable component for safeguarding system integrity.

By incorporating the MAX6837HXSD3+T into your design, you can enhance system reliability, increase robustness against power supply variations, and reduce the risk of data corruption or loss during power failures.