Analog Devices Inc./Maxim Integrated MAX836EUS

Overview

MAX836EUS from Maxim Integrated is a micropower voltage monitor IC with open-drain n-channel output, 1.204V precision bandgap reference, ±1.25% trip threshold accuracy, <5µA typical supply current, and SOT143-4 package. It monitors system supply (e.g., VCC) or external voltages in battery-powered systems by comparing input against internal reference to trigger reset or load control.

For engineers reviewing the MAX836EUS datasheet, MAX836EUS pinout, MAX836EUS application, or MAX836EUS equivalent, this page delivers verified functional identity, validated pin roles, confirmed operating parameters (VTH = 1.204V, ICC <5µA, VCC = 2.5–11V), and real-world use cases including precision battery monitoring and load switching where low quiescent current and accurate threshold detection are critical.

Technical Context

The MAX836EUS integrates a precision 1.204V bandgap reference and comparator in a single die, with IN connected to the noninverting input and internal reference tied to the inverting input. Its open-drain output supports pull-up to voltages up to 11V-exceeding VCC-enabling level-shifting and flexible interface design.

Threshold voltage is externally programmable via two resistors (R1/R2) forming a voltage divider on IN; hysteresis (6mV typical) can be added using R3 to suppress noise-induced toggling near trip point. Input leakage is ≤±12nA, ensuring minimal error contribution from high-impedance dividers.

Key Specifications

Pinout & Package

SOT143-4 package (4-pin, 1.3mm × 1.3mm, 0.95mm height), lead-free compatible, tape-and-reel delivery only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803DBZT and MAX6326UR29+T, the MAX836EUS uniquely supports externally programmable thresholds via resistor dividers, retains open-drain flexibility for level translation, and maintains full functionality across its 2.5–11V supply range-making it optimal for adaptive voltage supervision in multi-rail or battery-varying systems.

Availability

MAX836EUS is available at Aetrix Electronics and suitable for precision battery monitor, load switching, and battery-powered systems requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.

Supply support for MAX836EUS 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, sensing, and interface applications, with emphasis on high-performance, low-power solutions.

The MAX836EUS belongs to Maxim's micropower voltage monitor product line, engineered specifically for accurate, low-current supply supervision in portable and energy-sensitive systems where battery longevity and reliable threshold detection are essential.

FAQ

What is the exact trip threshold voltage of the MAX836EUS?

The MAX836EUS features a precision 1.204V internal bandgap reference used as the comparator's threshold. Its trip point is programmable via external resistors on the IN pin, with ±1.25% accuracy over -40°C to +85°C. The 1.204V value is specified in the Electrical Characteristics table under "Trip Threshold Voltage (VTH)" and confirmed in the General Description and Typical Operating Characteristics plots.

Does the MAX836EUS support monitoring voltages higher than its VCC supply?

Yes-the MAX836EUS IN pin accepts input voltages up to VCC – 1V per Absolute Maximum Ratings, but the monitored voltage itself (e.g., VMON in Figure 3) is independent of VCC. However, the IN node must remain within that limit. The open-drain OUT can be pulled up to ≤11V regardless of VCC, enabling interface with higher-voltage logic domains while VCC powers the core circuitry.

Can the MAX836EUS replace the MAX837EUS in an existing design?

No direct replacement: the MAX836EUS has an open-drain output, while the MAX837EUS uses a push-pull output. Swapping them requires verifying pull-up resistor presence, load compatibility, and whether active-high or active-low behavior is needed. The pinout is identical, but output drive architecture differs-so PCB changes may be necessary unless the original design already accommodates open-drain signaling.

What is the maximum allowable pull-up voltage on the MAX836EUS OUT pin?

The MAX836EUS OUT pin supports pull-up voltages up to 11V, as stated in the Absolute Maximum Ratings ("OUT to GND (MAX836): -0.3V to 12V") and reinforced in the Detailed Description: "The MAX836 open-drain output can be pulled up to a voltage greater than VCC, but may not exceed 11V." Exceeding 11V risks permanent damage.

How does hysteresis work in the MAX836EUS, and is it built-in?

The MAX836EUS includes 6mV typical internal hysteresis, as listed in the Electrical Characteristics table. This hysteresis is inherent to the comparator design and improves noise immunity without external components. Additional hysteresis can be added externally using R3 (per Figure 2), but the base 6mV is always present and ensures stable operation near the trip point even with minimal external parts.