What this supervisor does and where it fits
The Maxim Integrated MAX6735KATGD3+ is a triple-voltage microprocessor supervisor in a SOT-23-8 package. It monitors three supply rails — 1.11 V, 3.075 V, and one adjustable threshold — and asserts an active-low reset when any monitored voltage falls below its threshold. The reset output is push-pull, totem-pole, so no external pull-up resistor is needed on the reset line. With a minimum reset timeout of 140 ms, it holds the system in reset long enough for all rails to stabilise before the processor starts. This part is qualified to AEC-Q100 (automotive grade) and rated for operation from -40°C to 85°C, making it suitable for automotive body electronics, infotainment, ADAS sensor modules, and industrial control systems that require reliable power-rail supervision across temperature extremes.
Three monitored voltages — what they mean for your BOM
The three monitored thresholds cover 1.11 V, 3.075 V, and an adjustable input. The 140 ms minimum reset timeout ensures the processor sees a clean power-good signal after all supplies have ramped, even in systems with slow-start converters or large bulk capacitance.
Automotive qualification and lifecycle
The MAX6735KATGD3+ carries AEC-Q100 qualification, meaning it has passed the stress tests required for automotive-grade components — extended temperature cycling, high-temperature operating life, and ESD robustness. This qualification also makes it a strong candidate for industrial applications where long-term reliability is critical.