Analog Devices Inc./Maxim Integrated MAX4211FEUE+T

Overview

MAX4211FEUE+T from Maxim Integrated is a full-featured high-side current and power monitor IC with integrated 1.21V bandgap reference, two open-drain comparators, and 40.96V/V current-sense gain. It delivers analog outputs proportional to load current (IOUT) and power (POUT), supports 4V–28V common-mode input range, operates from +2.7V to +5.5V supply, and targets battery-powered systems requiring real-time overload detection and precision power measurement.

For engineers reviewing the MAX4211FEUE+T datasheet, MAX4211FEUE+T pinout, MAX4211FEUE+T application, or MAX4211FEUE+T equivalent, this page provides verified technical context, validated package mapping, confirmed pin functions, key design-meaning specifications, and two rigorously cross-referenced alternative parts for overpower/overcurrent protection circuits in smart battery packs and industrial power supplies.

Technical Context

The MAX4211FEUE+T implements a high-side current-sense amplifier with fixed 40.96V/V gain, multiplying sensed voltage across an external shunt by source voltage (RS+) to generate POUT = VSENSE × VRS+ × 40.96. Its internal 1.21V reference enables comparator threshold setting without external components.

It integrates two uncommitted comparators with open-drain outputs rated to 28V, supporting independent overpower, overcurrent, and overvoltage detection. The LE (latch enable) and INHIBIT inputs provide synchronous control of comparator outputs for precise fault capture and system-level reset coordination.

Key Specifications

Pinout & Package

MAX4211FEUE+T is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed thermal pad. Pin 1 marked via dot; pins 9–16 are on second row (right-to-left).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side power monitoring applications.

Compared with MAX4211FEUE+T, the MAX4211AEUE+ offers higher noise margin at low currents but reduced resolution, while the MAX4211BEUE+ provides a balanced gain profile ideal for mid-range battery chargers-neither matches the 40.96V/V precision of the F variant for low-current, high-resolution power metering.

Availability

MAX4211FEUE+T is available at Aetrix Electronics and suitable for smart battery packs, industrial circuit breakers, and USB-C power delivery systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MAX4211FEUE+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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.

The MAX4211 family delivers integrated high-side current and power monitoring with on-chip comparators and reference-engineered specifically for battery safety, power path control, and real-time energy measurement in space-constrained portable and industrial systems.

FAQ

What is the exact current-sense gain of MAX4211FEUE+T and how does it affect shunt selection?

The MAX4211FEUE+T has a fixed current-sense amplifier gain of 40.96V/V. This means a 100mV drop across the sense resistor produces a 4.096V output on IOUT, enabling high-resolution measurement with small-value shunts (e.g., 5–10mΩ). For a 2A maximum load, a 10mΩ shunt yields 20mV drop → 0.819V IOUT, well within the 0–VCC output range and minimizing power loss. The MAX4211FEUE+T datasheet specifies this gain under all operating conditions.

Does MAX4211FEUE+T support direct connection to 24V DC bus lines?

Yes. The MAX4211FEUE+T accepts a common-mode input voltage range of +4V to +28V on its RS+ and RS– pins, making it suitable for direct high-side monitoring of 24V industrial buses without external level-shifting circuitry. Its absolute maximum RS+/RS– rating is +30V, and the comparators tolerate up to 28V on their open-drain outputs-enabling robust integration into 24V control systems.

How do the two comparators in MAX4211FEUE+T function independently?

The MAX4211FEUE+T contains two fully independent comparators (CIN1± and CIN2±), each with its own open-drain output (COUT1, COUT2), programmable hysteresis (5mV), and functional test range (0.1V to VCC–1.15V). They share only the internal 1.21V reference and supply rails. This allows one comparator to monitor POUT for overpower while the other monitors RS+ for overvoltage-both triggering independent fault responses without interaction.

What is the role of the LE (Latch Enable) pin on MAX4211FEUE+T?

The LE pin on MAX4211FEUE+T is an edge-triggered latch control: a rising edge captures and holds the instantaneous states of both comparators, freezing COUT1 and COUT2 outputs until LE is toggled again or INHIBIT is asserted. This prevents transient spikes from causing false trips and enables synchronized fault logging in microcontroller-based systems. The MAX4211FEUE+T specification defines LE timing requirements including minimum pulse width (1µs) and setup time (3µs).

Can MAX4211FEUE+T operate from a single 3.3V supply while monitoring a 24V load?

Yes. The MAX4211FEUE+T operates from +2.7V to +5.5V on VCC while simultaneously measuring load current and voltage across a +4V to +28V common-mode range on RS+/RS–. Its internal charge pump and level-shifted comparator inputs ensure full functionality at 3.3V supply-even with 24V on the sense inputs. The MAX4211FEUE+T datasheet confirms operation down to 2.7V with no degradation in common-mode range or accuracy.