Analog Devices Inc./Maxim Integrated MAX6375XR29

Overview

MAX6375XR29 from Maxim Integrated is an ultra-low-power, active-low voltage detector in SC70-3 package, with factory-trimmed 2.93V threshold (±2.5% over temperature), 500nA supply current, and push-pull output. It monitors VCC in portable battery-powered systems and asserts OUT low when supply drops below threshold-used for precision brownout detection in microcontroller reset circuits.

For engineers reviewing the MAX6375XR29 datasheet, MAX6375XR29 pinout, MAX6375XR29 application, or MAX6375XR29 equivalent, this device serves as a space-constrained, low-quiescent-current supervisor for Li+-based power rails, DC/DC converter monitoring, and embedded system reset generation where supply stability down to 1V must be guaranteed.

Technical Context

The MAX6375XR29 implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.93V trip point. Its push-pull output drives logic directly without external pull-up, and it guarantees correct output state for VCC ≥1V.

Designed to reject fast transients, it features 20µs propagation delay (falling edge) and 6.3µs typical delay at +25°C, with hysteresis of 100mV to prevent chatter near threshold. Threshold tempco is ±40ppm/°C, supporting stable operation across –40°C to +85°C.

Key Specifications

Pinout & Package

MAX6375XR29 is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for high-density PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage detector applications.

Compared with TPS3123QDBVRQ1 and APX803S-293T2L-7, the MAX6375XR29 uniquely combines SC70-3 miniaturization, 500nA ICC, and guaranteed 1V operation-making it optimal for space- and energy-constrained portable medical and consumer devices where layout density and multi-year battery life are design priorities.

Availability

MAX6375XR29 is available at Aetrix Electronics and suitable for portable medical sensors, Bluetooth LE beacons, and wearable health monitors requiring stable component supply with long-term lifecycle support and lead-free compliance.

Supply support for MAX6375XR29 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, medical, and consumer markets.

The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage supervision in battery-critical systems-delivering factory-trimmed thresholds, sub-µA quiescent current, and miniature packaging without external components.

FAQ

What is the exact factory-trimmed threshold voltage of the MAX6375XR29?

The MAX6375XR29 has a nominal threshold voltage of 2.93V, with ±2.5% tolerance over the full –40°C to +85°C operating temperature range. This value is laser-trimmed at wafer test and verified per Table 1 in the datasheet; the "R29" suffix explicitly denotes the 2.93V variant within the MAX6375 series.

Does the MAX6375XR29 require an external pull-up resistor on its OUT pin?

No, the MAX6375XR29 features an active-low push-pull output, meaning it actively drives both high and low states. Unlike open-drain detectors, it does not require an external pull-up resistor-simplifying design and reducing BOM count. The output can directly interface with standard CMOS reset inputs.

Can the MAX6375XR29 operate reliably below 2.0V VCC?

Yes, the MAX6375XR29 is fully specified to operate down to 1.2V VCC and guarantees correct output logic state (active-low assertion when VCC < 2.93V) for VCC as low as 1V. This makes it suitable for deep brownout detection in systems powered by aging or low-charge batteries.

What is the maximum transient duration the MAX6375XR29 can ignore at 100mV overdrive?

At a threshold overdrive of 100mV (i.e., VCC = 2.83V), the MAX6375XR29 rejects negative-going transients up to 200µs in duration, as shown in Figure MAX6375-04 of the datasheet. This immunity prevents false resets caused by switching noise or load-dump events on the monitored rail.

Is the MAX6375XR29 available in lead-free packaging?

Yes, the MAX6375XR29 is available in lead-free packaging. To order the RoHS-compliant version, replace the "-T" suffix with "+T" (e.g., MAX6375XR29+T). Both leaded and lead-free variants share identical electrical specifications and SC70-3 mechanical dimensions.