Analog Devices Inc./Maxim Integrated MAX6375XR26

Overview

MAX6375XR26 from Maxim Integrated is an ultra-low-power, factory-trimmed voltage detector IC designed for precision supply monitoring in battery-powered systems. It features a 2.63V threshold (±2.5% over temperature), active-low push-pull output, 500nA supply current at +25°C, and operates from 1.2V to 5.5V VCC - ideal for Li+-powered portable devices requiring reliable brownout detection.

For engineers reviewing the MAX6375XR26 datasheet, MAX6375XR26 pinout, MAX6375XR26 application, or MAX6375XR26 equivalent, this device serves as a space-constrained, low-quiescent-current reset supervisor for microcontroller power sequencing, battery voltage validation, and regulated supply monitoring where sub-1µA ICC and guaranteed logic state down to 1V are critical selection criteria.

Technical Context

The MAX6375XR26 integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to deliver fixed 2.63V detection without external components. Its internal architecture ensures stable operation across -40°C to +85°C with ±2.5% threshold accuracy and 40ppm/°C tempco.

It asserts an active-low output when VCC falls below VTH and maintains correct logic state down to 1V VCC. The device rejects fast transients via built-in immunity - maximum allowable negative-going glitch duration is ≤200µs at 100mV overdrive - enabling robust operation in noisy power environments.

Key Specifications

Pinout & Package

MAX6375XR26 is housed in a 3-pin SC70 package (pin-compatible with SOT23-3), optimized for high-density PCB layouts in portable electronics. Dimensions: 2.0mm × 2.1mm × 0.95mm (SC70).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB26DBZR and TPS3808G33DBVR, the MAX6375XR26 uniquely combines 2.63V precision detection, push-pull drive, sub-1µA ICC, and SC70 footprint - making it optimal for space- and current-constrained 2.7V–3.0V battery monitoring where direct MCU reset assertion is mandatory.

Availability

MAX6375XR26 is available at Aetrix Electronics and suitable for portable medical sensors, wearable fitness trackers, smart meter battery backup, and industrial IoT edge nodes requiring stable component supply, long-term lifecycle support, and lead-free compliance.

Supply support for MAX6375XR26 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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.

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

FAQ

What is the exact reset threshold voltage of the MAX6375XR26?

The MAX6375XR26 has a factory-trimmed nominal reset threshold voltage of 2.63V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during production and does not require external calibration. At +25°C, the typical threshold is 2.63V, and the min/max limits are 2.564V and 2.696V respectively per the datasheet's Table 1.

Does the MAX6375XR26 require any external components to operate?

No, the MAX6375XR26 requires zero external components. It integrates a precision bandgap reference, comparator, and trimmed resistor network internally. Only VCC, GND, and the OUT signal need connection - eliminating BOM cost, layout area, and calibration steps. This self-contained design is confirmed in the General Description and Applications sections of the official datasheet.

What is the output configuration of the MAX6375XR26 and how does it interface to a microcontroller?

The MAX6375XR26 features an active-low push-pull output. When VCC falls below 2.63V, OUT is driven low (≤0.4V at 100µA sink); otherwise, OUT is driven high (≥0.8×VCC). This allows direct connection to an MCU's active-low reset pin without a pull-up resistor. The push-pull structure ensures strong logic-level drive in both states, unlike open-drain alternatives that require external biasing.

What is the supply current consumption of the MAX6375XR26 across temperature?

The MAX6375XR26 draws a maximum supply current (ICC) of 1.0µA over -40°C to +85°C, with typical consumption of 0.5µA at +25°C and 3.0V VCC. The Typical Operating Characteristics graph (Figure 1) shows ICC remains below 0.7µA from -20°C to +70°C at 5V VCC. This ultra-low ICC enables multi-year operation in battery-powered applications.

Is the MAX6375XR26 compatible with both SC70-3 and SOT23-3 footprints?

The MAX6375XR26 is specified exclusively for the SC70-3 package (top mark "ACZ"), as indicated in the Ordering Information table and Pin Configuration diagram. While pinout is identical to SOT23-3 (GND-OUT-VCC), the SC70-3 variant has smaller dimensions (2.0mm × 2.1mm vs. 2.9mm × 1.6mm) and different thermal characteristics. For SOT23-3, the correct variant is MAX6375UR26-T (top mark "FZHC"). Board layout must match the specific package ordered.