MAX16011TAA+T - Overvoltage Protector, 5.5–72V, 2-Channel Supervisor TDFN-8 | Maxim Integrated
MPN: MAX16011TAA+T ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.36 | $236.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.87 | $1,870.00 |
MAX16011TAA+T Overview
What is a voltage supervisor IC? A voltage supervisor (also called a reset or monitor IC) is a power management device that continuously observes a supply rail and asserts a reset or fault signal when the voltage moves outside a programmable window. Supervisors sit at the bottom of the power management hierarchy: PMIC -> supervisor/monitor -> discrete comparators, providing system-level protection that simpler regulators cannot. The MAX16011TAA+T extends this concept to high-voltage rails by integrating two window comparators in a single 3x3 mm package.
Key features include open-drain outputs rated to 72V, an active-high enable input for power sequencing, a selectable active-high/low OUTB output polarity, and a built-in 1.245V/1.223V reference. The two comparators are designed for monitoring both undervoltage and overvoltage events independently, enabling window-watchdog-style supervision in compact form factor. The TDFN-8 EP package is specified for -40C to +125C automotive temperature grade operation.
The MAX16011 uses an internal bandgap reference driving two window comparators whose trip points are set by external resistor dividers on the IN1/IN2 inputs. Open-drain outputs swing to the system voltage rail, allowing direct interface to downstream controllers, FPGAs, or upstream disconnect FETs without level translation. According to the manufacturer datasheet, the device maintains stable trip-point accuracy across the full 5.5V to 72V input range.
Typical applications include telecom equipment overvoltage protection, industrial 24V/48V rail monitoring, battery stack management, notebook and server power rails, and automotive load-dump protection. The wide input range also makes it suitable for protecting downstream circuits from transients on long cable runs.
Design consideration: choose the external resistor divider values so that undervoltage and overvoltage trip points fall inside the input common-mode range of the comparators, and place decoupling close to the supply pin to handle high-voltage transients.
This page synthesizes distributor pricing from DigiKey/Mouser/LCSC, drop-in alternative pin-compatible parts, and practical supervisor design notes not found in the standalone datasheet, giving engineers a single page to evaluate the MAX16011TAA+T against functional equivalents.
Drop-in alternatives for MAX16011TAA+T — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX16011TAA+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX16010TAA+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX16010TAA+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX16011TAA+T Specifications
| Function | Overvoltage Protection / Detection Supervisor |
| Topology | 2 independent window comparators |
| Number of Voltages Monitored | 2 |
| Supply Voltage Range (VCC) | 5.5 V to 72 V |
| Open-Drain Output Voltage Rating | 72 V |
| Output Type | Open Drain or Open Collector |
| Reference Voltage (IN1) | 1.245 V |
| Reference Voltage (IN2) | 1.223 V |
| Enable Input | Active-high EN |
| OUTB Polarity | Selectable active-high / active-low |
| Operating Temperature Range | -40C to +125C (Automotive) |
| Package | 8-TDFN-EP (3x3 mm) |
| Number of Pins | 8 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
MAX16011TAA+T Pin Configuration
| Pin 1 | IN1 — Comparator 1 input (UV/OV threshold set by external divider vs 1.245V ref) |
| Pin 2 | IN2 — Comparator 2 input (UV/OV threshold set by external divider vs 1.223V ref) |
| Pin 3 | GND — Ground reference |
| Pin 4 | EN — Active-high enable input |
| Pin 5 | OUT — Open-drain comparator output (active-high) |
| Pin 6 | OUTB — Open-drain comparator output (selectable active-high/low) |
| Pin 7 | VCC — Supply voltage input (5.5V to 72V) |
| Pin 8 | EP — Exposed thermal pad - solder to ground plane for thermal dissipation |
Typical Applications
MAX16011TAA+T is suitable for 6 applications: Telecom 48V Rail Overvoltage Protection, Industrial 24V PLC and Motor Drive Monitoring, Server and Notebook Power Rail Supervisor, Battery Stack Management and Protection, Automotive Load-Dump and Transient Protection, Solar and Renewable Energy String Monitoring.
Telecom 48V Rail Overvoltage Protection
The MAX16011TAA+T is purpose-built for 48V telecom rail protection. Its 5.5V to 72V VCC range and 72V open-drain output rating allow direct connection to -48V backplane rails with resistor-divider scaling, without external level shifting. The two-window comparator topology monitors both undervoltage (brown-out) and overvoltage (transient surge) events, asserting a fault signal to the line-card controller or upstream disconnect FET when the rail exits the safe window. Compared to discrete comparator implementations, the MAX16011TAA+T saves PCB area and reduces BOM count.
Recommended
Industrial 24V PLC and Motor Drive Monitoring
Industrial 24V PLC and motor-drive systems require robust supervision against load-dump transients, reverse polarity, and brown-out events. The MAX16011TAA+T operates directly from 24V rails with its 5.5V to 72V supply range, and the -40C to +125C automotive temperature grade ensures reliability in factory-floor environments. Channel 1 can monitor the 24V rail for undervoltage events while Channel 2 watches for overvoltage transients from inductive kickback, giving the PLC controller an early warning to shut down gracefully.
Recommended
Server and Notebook Power Rail Supervisor
Server and notebook power systems stack multiple rails (12V, 19V, 20V) that each require independent monitoring to prevent damage to downstream CPUs, GPUs, and DDR memory. The MAX16011TAA+T integrates two comparators in a 3x3 mm TDFN-EP package, allowing a single IC to monitor two rails simultaneously. The selectable active-high/low OUTB polarity simplifies interface to various platform controllers, while the open-drain 72V output allows direct connection to the system management bus without additional level translation.
Recommended
Battery Stack Management and Protection
Multi-cell battery stacks in e-mobility, UPS, and energy storage systems require continuous monitoring of individual cell or pack voltages to prevent over-discharge and overcharge conditions. The MAX16011TAA+T's 5.5V to 72V supply range covers 4S to 16S lithium-ion packs with appropriate resistor dividers, and the two independent comparators can monitor both pack voltage and individual cell group voltage simultaneously. The exposed-pad TDFN-EP package helps dissipate heat when the device sits close to high-current battery paths.
Recommended
Automotive Load-Dump and Transient Protection
Automotive 12V and 24V systems experience load-dump transients up to 60V during alternator field collapse. The MAX16011TAA+T is rated for -40C to +125C operation and 72V transient survival, making it suitable for protecting ECUs, infotainment head units, and ADAS sensors from these events. Channel 1 monitors the nominal 12V rail for undervoltage (cranking), while Channel 2 watches for overvoltage transients, providing a window-watchdog supervisor that is more compact than discrete solutions.
Recommended
Solar and Renewable Energy String Monitoring
Solar PV string monitoring requires supervision of high-voltage DC rails (24V to 60V typical) to detect arc-fault and ground-fault conditions. The MAX16011TAA+T operates directly from these rails with its 5.5V to 72V supply range, and the two-channel comparator topology can monitor both string voltage and current-sense amplifier output. The exposed-pad TDFN package handles thermal stress in outdoor enclosures, while the open-drain 72V output can drive optocouplers for galvanic isolation to the inverter controller.
Recommended
Recommended Products Summary
Engineering reference data for MAX16011TAA+T — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX16011TAA+ | MAX16010TAA+T | MAX16010TAA+ |
|---|---|---|---|---|
| Package | 8-TDFN-EP (3x3) | 8-TDFN-EP (3x3) - same | 8-TDFN-EP (3x3) - same | 8-TDFN-EP (3x3) - same |
| Brand | Analog Devices (Maxim) | Analog Devices (Maxim) - same | Analog Devices (Maxim) - same | Analog Devices (Maxim) - same |
| Supply Voltage Range | 5.5V to 72V | 5.5V to 72V | 5.5V to 72V | 5.5V to 72V |
| Enable Input | Active-high EN | Active-high EN | Complementary EN/EN-bar | Complementary EN/EN-bar |
| Reference Voltage IN1 / IN2 | 1.245V / 1.223V | 1.245V / 1.223V | 1.245V / 1.223V | 1.245V / 1.223V |
| Output Type | Open-drain, 72V rated | Open-drain, 72V rated | Open-drain, 72V rated | Open-drain, 72V rated |
| OUTB Polarity | Selectable active-high/low | Selectable active-high/low | Active-high fixed | Active-high fixed |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Packaging | Tape & Reel (+T) | Tube (+) | Tape & Reel (+T) | Tube (+) |
Key Differentiators
- Selectable OUTB polarity (vs MAX16010TAA+T)
- Single active-high enable (vs MAX16010TAA+T)
- Tape-and-reel packaging for high-volume assembly (vs MAX16011TAA+ (tube))
Design Notes
The MAX16011TAA+T operates from 5.5V to 72V directly on the VCC pin without external regulation. Add a 0.1uF ceramic decoupling capacitor as close as possible to the VCC pin to handle high-voltage transients, and consider a series ferrite bead or 10 ohm resistor for additional input protection on noisy industrial rails.
The exposed thermal pad (EP) of the TDFN-EP package must be soldered to a sufficient ground copper pour, with at least 4 thermal vias connecting to an internal ground plane. Without proper EP soldering, the device can overheat during continuous fault conditions. Place IN1/IN2 traces away from switching nodes to avoid coupling that could cause false comparator triggering.
Do not exceed 72V on VCC or the open-drain output pins - the device is rated for 72V maximum and overvoltage will damage the ESD structures. Ensure external resistor dividers on IN1/IN2 use 1% tolerance resistors to maintain trip-point accuracy, and verify that the divider values keep IN1/IN2 within the 0V to VCC-1.5V common-mode range during all fault conditions.
Open-drain outputs require external pull-up resistors; select pull-up values between 10 kohm and 100 kohm depending on the desired rise time and quiescent current trade-off. For fastest response, use 10 kohm pull-ups to the local logic supply. Long traces to OUT/OUTB should be guarded with ground to prevent capacitive coupling from adjacent switching signals.
Compliance Information
RoHS and REACH compliant per Analog Devices/Maxim product page. Automotive -40C to +125C temperature grade listed by Maxim and Vyrian; AEC-Q100 qualification status should be confirmed directly with Maxim/Analog Devices for production automotive designs.
