Analog Devices Inc./Maxim Integrated MAX6034BEXR25+T

Overview

MAX6034BEXR25+T from Maxim Integrated is a precision, micropower, low-dropout series voltage reference in SC70-3 package, delivering 2.500V ±0.4% initial accuracy, 30ppm/°C (max) temperature coefficient, and 200mV (max) dropout at 1mA load - optimized for battery-powered data-acquisition and industrial control systems.

For engineers reviewing the MAX6034BEXR25+T datasheet, MAX6034BEXR25+T pinout, MAX6034BEXR25+T application, or MAX6034BEXR25+T equivalent, this page provides verified specifications, real-world operating context, pin-level circuit roles, and validated alternative options for low-power, space-constrained analog reference design.

Technical Context

The MAX6034BEXR25+T employs a proprietary bandgap core with curvature-correction circuitry and laser-trimmed thin-film resistors to achieve ±0.4% initial accuracy and ≤30ppm/°C tempco over –40°C to +85°C. It operates as a three-terminal series-mode reference with IN, OUT, and GND terminals - eliminating external compensation capacitors while maintaining stability across 0–1µF load capacitance.

Its supply current remains ultra-low (85–115µA) and highly supply-voltage-independent (≤16µA/V variation), enabling reliable operation in low-voltage battery systems where input voltage may dip near V_OUT + 200mV. Dropout is defined at 1mA sourcing, with guaranteed 70–200mV performance across temperature.

Key Specifications

Pinout & Package

MAX6034BEXR25+T is housed in a miniature 3-pin SC70 surface-mount package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained PCB layouts in handheld and embedded systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR3425BRJZ-R7 and REF3025AIDBZR, the MAX6034BEXR25+T delivers optimal balance of micropower operation (90µA), compact SC70 packaging, and robust –40°C to +85°C performance - making it preferred for space- and energy-constrained industrial and portable systems where moderate initial accuracy is acceptable.

Availability

MAX6034BEXR25+T is available at Aetrix Electronics and suitable for battery-operated equipment, data-acquisition systems, and industrial process control systems requiring stable component supply with guaranteed long-term availability.

Supply support for MAX6034BEXR25+T 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX6034 family was designed specifically for precision, low-power, space-constrained voltage reference needs in portable instrumentation, sensor interfaces, and battery-backed systems - emphasizing micropower operation, SC70 integration, and wide-temperature reliability.

FAQ

What is the maximum load current the MAX6034BEXR25+T can source and sink?

The MAX6034BEXR25+T can source up to 1mA and sink up to 200µA while maintaining specified output voltage accuracy and dropout performance. This dual-direction capability supports both active pull-up and pull-down configurations in precision analog circuits, such as driving ADC reference inputs or biasing op-amp feedback networks. Exceeding these limits may cause output deviation beyond the 200mV dropout specification.

Does the MAX6034BEXR25+T require an external output capacitor for stability?

No, the MAX6034BEXR25+T is internally compensated and stable with load capacitance ranging from 0 to 1µF - no external output capacitor is required. This eliminates BOM cost and layout complexity, especially valuable in ultra-compact designs like wearable sensors. An optional 1µF ceramic capacitor may be added to improve transient response under large load steps, but it is not needed for basic stability.

What is the minimum input voltage required for proper regulation of the MAX6034BEXR25+T?

The MAX6034BEXR25+T requires a minimum input voltage of V_OUT + 200mV = 2.7V for full-load (1mA) operation, per its datasheet specification. At lighter loads, it can regulate down to lower VIN, but 2.7V is the guaranteed minimum for 2.500V output accuracy across temperature. Input voltages below 2.7V may result in increased dropout or loss of regulation.

How does the supply current of the MAX6034BEXR25+T vary with input voltage?

The MAX6034BEXR25+T exhibits exceptional supply-voltage independence: its quiescent current varies by only ≤16µA/V across the 2.7V to 5.5V input range. For example, at 2.7V input, I_IN is typically 90µA; at 5.5V, it rises by no more than 45µA - remaining well under 135µA. This predictability simplifies power budgeting in systems with varying supply rails, such as battery-powered devices transitioning between charge and discharge states.

Is the MAX6034BEXR25+T pin-compatible with other members of the MAX6034 family?

Yes, all MAX6034 variants - including MAX6034AEXR25-T, MAX6034BEXR30-T, and MAX6034BEXR25+T - share identical SC70-3 pinout (IN, OUT, GND) and thermal/mechanical footprint. This allows drop-in replacement across output voltages (2.048V to 4.096V) and accuracy grades (A = ±0.2%, B = ±0.4%) without PCB redesign, supporting flexible prototyping and BOM rationalization in multi-voltage reference designs.