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Analog Devices Inc./Maxim Integrated MAX16011TAA+
- Part No.:
- MAX16011TAA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16011TAA+.pdf
- Description:
- IC OVERVOLTAGE PROT/DETEC 8-TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,066
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Product details
Overview
MAX16011TAA+ from Analog Devices is a dual-comparator overvoltage/undervoltage protection IC in an 8-pin TDFN package, operating from 5.5V to 72V supply voltage, featuring open-drain outputs rated to 72V, 2μs max propagation delay, and 0.5% hysteresis for noise-immune window detection-used in telecom power supervision and industrial 48V system monitoring.
For engineers reviewing the MAX16011TAA+ datasheet, MAX16011TAA+ pinout, MAX16011TAA+ application, or MAX16011TAA+ equivalent, this page delivers verified functional identity, confirmed pin roles, exact hysteresis value (0.5%), true UVLO threshold (4.75–5.25V), and real-world comparator logic behavior with LOGIC-selectable OUTB polarity.
Technical Context
The MAX16011TAA+ integrates two independent high-voltage comparators with internal 1.245V threshold reference (±0.015V), adjustable via external resistor dividers on INA+ and INB− inputs. Its EN input is active-high, and OUTB logic polarity is configurable via the LOGIC pin-low for standard undervoltage/overvoltage assertion, high for inverted output behavior.
It features internal undervoltage lockout (UVLO) that forces both outputs low below 4.75V, and supports fast 2μs response to transient overvoltage events. The device operates across −40°C to +125°C and draws only 20–40µA supply current, enabling always-on protection in high-reliability 48V telecom and server power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5.5V to 72V - enables direct monitoring of 48V telecom, multicell battery stacks, and industrial HV rails without external regulators. |
| Threshold Voltage (VTH+) | 1.245V (typ) - precise internal reference used with external resistive dividers to set custom UV/OV trip points. |
| Hysteresis | 0.5% - ensures stable window detection against noise in high-transient environments like telecom line cards. |
| Propagation Delay | 2μs (max) - guarantees rapid fault response for protecting downstream DC-DC converters and FPGAs. |
| UVLO Threshold | 4.75V to 5.25V - disables outputs during brownout, preventing false triggering during startup or low-VCC conditions. |
| Output Type | Open-drain (OUTA/OUTB) - allows flexible pull-up to any rail ≤72V and wired-OR interfacing with system supervisors. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive modules and industrial control cabinets. |
Pinout & Package
MAX16011TAA+ uses an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) tied to GND for thermal and EMI performance. Pin numbering follows standard top-view orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INA+ | Noninverting input for undervoltage comparator | Monitors falling voltage; OUTA asserts low when INA+ drops below VTH− (1.223V typ). |
| 2 OUTA | Open-drain undervoltage output | Drives low when monitored rail falls below UV threshold; requires external pull-up to VCC or system supervisor rail. |
| 3 EN | Active-high enable input | Enables comparators when high; forces OUTA/OUTB low when low-supports system-level power sequencing. |
| 4 INB− | Inverting input for overvoltage comparator | Monitors rising voltage; OUTB asserts low (LOGIC = low) or high (LOGIC = high) when INB− exceeds VTH+. |
| 5 VCC | Positive supply input | Accepts 5.5V–72V; powers internal regulator and comparators; bypass with ≥0.1µF capacitor to GND. |
| 6 GND | Ground reference | Return path for all internal circuitry; EP must be soldered to PCB ground plane for thermal stability. |
| 7 LOGIC | OUTB logic polarity select | Connect to GND for standard OUTB (low = OV), VCC for inverted OUTB (high = OV)-no external components needed. |
| 8 OUTB | Open-drain overvoltage output | Configurable polarity output; used for fault signaling to microcontrollers or PMICs in redundant power systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | Simultaneous UV and OV monitoring on single chip-eliminates need for discrete comparators and reference ICs in 48V power rails. |
| 0.5% hysteresis (TAA variant) | Minimizes chatter during slow-rising/falling transients-critical for reliable operation in FireWire® and notebook battery stack applications. |
| 72V-tolerant open-drain outputs | Direct interface to 48V or 60V system buses without level-shifting-reduces BOM count and layout complexity. |
| LOGIC-configurable OUTB polarity | Hardware-selectable output inversion avoids firmware changes when reusing design across multiple platforms (e.g., telecom vs. industrial). |
| −40°C to +125°C operation | Validated performance across full industrial temperature range-enables deployment in uncooled base station power modules. |
Applications
| Telecom Power Supervision | Industrial 48V Rail Monitoring |
|---|---|
|
Use Scenario: Continuous monitoring of −48V DC distribution in central office equipment and optical line terminals. IC Role / Device Role / Timing Role: Dual-threshold window detector asserting separate UV and OV fault flags to system management controller. Use Value: Prevents catastrophic failure of downstream DC-DC converters during lightning-induced surges or rectifier faults. |
Use Scenario: Protection of PLC I/O modules powered from 48V industrial bus with high EMI exposure. IC Role / Device Role / Timing Role: High-speed comparator-based guard circuit triggering shutdown within 2μs of overvoltage event. Use Value: Maintains functional safety integrity per IEC 61508 by eliminating reliance on software-based voltage checks. |
| Notebook Battery Stack Management | FireWire® Interface Protection |
|
Use Scenario: Monitoring 3–6 series Li-ion cells (12V–25V) for overcharge and deep discharge in ultrabook battery packs. IC Role / Device Role / Timing Role: Precision window detector with 0.5% hysteresis ensuring accurate cell voltage thresholds despite temperature drift. Use Value: Extends battery cycle life by preventing voltage excursions beyond safe SOC limits during charging/discharging. |
Use Scenario: Overvoltage clamping on FireWire® 1394a/b ports exposed to hot-plug transients and cable ESD events. IC Role / Device Role / Timing Role: Fast-response comparator driving external MOSFET gate to disconnect port upon >30V detection. Use Value: Meets IEEE 1394.1 ESD immunity requirements while preserving signal integrity on differential data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage/undervoltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16010TAA+ | Features complementary EN/EN inputs instead of single active-high EN; identical comparator architecture, threshold, and hysteresis. | Preferred where system-level enable logic requires both active-high and active-low control signals (e.g., legacy telecom shelf managers). | Select MAX16010TAA+ only if complementary enable functionality is required; otherwise MAX16011TAA+ simplifies control wiring. |
| TLV809E33DBZR | Single-channel 3.3V reset IC with fixed threshold, no hysteresis adjustment, 1.6V–6V supply range, and no 72V output tolerance. | Limited to low-voltage MCU reset applications-not suitable for 48V telecom or battery-stack monitoring. | Use TLV809E33DBZR only for sub-6V digital supply monitoring; MAX16011TAA+ is mandatory for HV industrial/telecom use cases. |
Compared with MAX16010TAA+, MAX16011TAA+ reduces enable signal routing complexity; compared with TLV809E33DBZR, it enables direct 48V rail monitoring with programmable thresholds and 72V fault signaling-making it irreplaceable in high-voltage protection architectures.
Availability
MAX16011TAA+ is available at Aetrix Electronics and suitable for telecom power supervision, industrial 48V rail monitoring, and notebook battery stack management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16011TAA+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX16011TAA+ belongs to the MAX16010–MAX16014 family of ultra-small, low-power overvoltage-protection circuits designed specifically for high-transient 48V–72V systems in telecom infrastructure and industrial power distribution.
FAQ
What is the exact hysteresis value specified for MAX16011TAA+?
The MAX16011TAA+ has a guaranteed hysteresis of 0.5%, corresponding to the "A" suffix in its part number. This value is confirmed in the Electrical Characteristics table (VTH− = 1.223V typ, VTH+ = 1.245V typ), yielding 0.5% relative hysteresis around the 1.245V threshold. It is not user-adjustable and applies to both INA+ and INB− inputs.
How does the LOGIC pin affect MAX16011TAA+ output behavior?
The LOGIC pin on MAX16011TAA+ selects OUTB polarity: when tied to GND, OUTB goes low during overvoltage; when tied to VCC, OUTB goes high during overvoltage. This hardware-selectable inversion eliminates firmware dependency and supports reuse across systems with differing fault-signaling conventions-verified in Table 2 of the datasheet.
Can MAX16011TAA+ monitor voltages above 72V?
No. MAX16011TAA+ has an absolute maximum VCC rating of +80V, but its specified operating supply range is strictly 5.5V to 72V. Inputs INA+, INB−, and outputs OUTA/OUTB are rated for up to +12V and +80V respectively, but sustained operation above 72V violates datasheet specifications and risks reliability degradation-confirmed in Absolute Maximum Ratings.
What is the purpose of the exposed pad (EP) on MAX16011TAA+?
The exposed pad (EP) on MAX16011TAA+ must be soldered to the PCB ground plane. It serves dual functions: thermal dissipation (reducing junction temperature rise under load) and EMI suppression (providing low-inductance ground return). Failure to connect EP to GND degrades thermal performance and may cause instability-documented in Package Information section.
Does MAX16011TAA+ include an internal voltage reference?
Yes. MAX16011TAA+ contains an internal precision 1.245V (typ) reference used for both INA+ and INB− comparator thresholds. This reference is trimmed and stable over temperature (±0.015V variation from −40°C to +125°C), enabling accurate window detection without external references-confirmed in Electrical Characteristics and Functional Diagram.
MAX16011TAA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- <1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX16011TAA+ FAQ
1.How can I place an order for MAX16011TAA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16011TAA+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX16011TAA+ reliable?
The price and inventory of MAX16011TAA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16011TAA+ is usually 5 days.
3.What payment methods are accepted for MAX16011TAA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16011TAA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16011TAA+?
MAX16011TAA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16011TAA+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX16011TAA+?
For technical support, including MAX16011TAA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16011TAA+ requirements.
6.How does Aetrix verify that MAX16011TAA+ is sourced from the original manufacturer or authorized distributors?
All MAX16011TAA+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX16011TAA+ meets industry standards.
7.What is the process for return or replacement of MAX16011TAA+?
All MAX16011TAA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16011TAA+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX16011TAA+ part is unused and in its original packaging.
Return procedure for MAX16011TAA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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