Analog Devices Inc./Maxim Integrated MAX6034BEXR25

Overview

MAX6034BEXR25 from Maxim Integrated is a precision, micropower, low-dropout series voltage reference delivering 2.500V output with ±0.4% initial accuracy, 75ppm/°C max temperature coefficient, and 200mV max dropout at 1mA load - designed for high-accuracy analog signal chains in space-constrained, battery-powered systems.

For engineers reviewing the MAX6034BEXR25 datasheet, MAX6034BEXR25 pinout, MAX6034BEXR25 application, or MAX6034BEXR25 equivalent, this page delivers verified specifications, SC70-3 package details, real-world load/transient behavior, stability with 0–1µF capacitive loads, and direct alternatives for precision data acquisition, industrial sensing, and portable instrumentation design.

Technical Context

The MAX6034BEXR25 employs a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve tight initial accuracy and low thermal drift. Its series-mode architecture eliminates external biasing resistors and supports sourcing up to 1mA and sinking up to 200µA.

Internally compensated for stability across 0–1µF load capacitance, it operates from (VOUT + 200mV) to 5.5V input while maintaining supply current variation ≤16µA/V - enabling robust performance in low-voltage, low-power systems where supply headroom is minimal.

Key Specifications

Pinout & Package

MAX6034BEXR25 is housed in a 3-pin SC70 surface-mount package (2.0mm × 2.1mm × 0.9mm), optimized for ultra-dense PCB layouts in handheld and portable equipment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the MAX6034BEXR25 trades minor initial accuracy and thermal drift for significantly smaller SC70-3 size, lower supply current, and capacitor-free operation - making it optimal for miniaturized, long-life battery systems where board area and power are critical.

Availability

MAX6034BEXR25 is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, handheld test equipment, and battery-operated data loggers requiring stable component supply with guaranteed long-term availability.

Supply support for MAX6034BEXR25 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, automotive, communications, and consumer applications.

The MAX6034 family was designed specifically for ultra-low-power, space-constrained precision analog systems - delivering micropower operation, low dropout, and SC70 packaging without sacrificing voltage accuracy or thermal stability.

FAQ

What is the maximum load current the MAX6034BEXR25 can source or sink?

The MAX6034BEXR25 can source up to 1mA and sink up to 200µA while maintaining specified output voltage accuracy and dropout performance. This capability allows direct interfacing with SAR ADC references, op-amp bias networks, and low-power DACs without external buffering - a key advantage in compact, low-component-count designs using the MAX6034BEXR25.

Does the MAX6034BEXR25 require an external output capacitor for stability?

No, the MAX6034BEXR25 is internally compensated and stable with output capacitance ranging from 0 to 1µF. Unlike many voltage references, it does not require a minimum output capacitor - eliminating a passive component, reducing PCB area, and simplifying layout. This feature is explicitly validated in the MAX6034BEXR25 datasheet and confirmed across all operating conditions.

What is the minimum input voltage required for the MAX6034BEXR25 to regulate properly?

The MAX6034BEXR25 requires a minimum input voltage of (VOUT + 200mV), i.e., 2.7V, to maintain regulation at full 1mA load. At lighter loads, it can operate closer to VOUT, but 2.7V is the guaranteed minimum across temperature and process variations. This low dropout enables reliable operation from aging batteries or low-headroom supplies in systems using the MAX6034BEXR25.

How does the MAX6034BEXR25's temperature coefficient compare to the 'A' grade variant?

The MAX6034BEXR25 has a maximum temperature coefficient of 75ppm/°C, versus 30ppm/°C for the MAX6034AEXR25. Both share identical 2.500V nominal output and SC70-3 packaging, but the 'B' grade offers relaxed drift performance at lower cost - suitable for applications where ±0.4% initial accuracy and moderate thermal stability meet system requirements, such as consumer-grade data loggers using the MAX6034BEXR25.

Can the MAX6034BEXR25 be used in place of the MAX6034AEXR25 without circuit changes?

Yes - the MAX6034BEXR25 is pin-compatible and functionally identical to the MAX6034AEXR25 except for relaxed initial accuracy (±0.4% vs. ±0.2%) and temperature coefficient (75ppm/°C vs. 30ppm/°C). No PCB or schematic changes are needed; substitution is valid where the looser specifications still satisfy system-level accuracy targets, offering cost and supply-chain flexibility for the MAX6034BEXR25.