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Analog Devices Inc./Maxim Integrated MAX6762TATWD3-T
- Part No.:
- MAX6762TATWD3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6762TATWD3-T.pdf
- Description:
- IC SUPERVISOR DL VOLT WINDOW DET
- Quantity:
- Payment:
- Shipping:
Inventory:7,200
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Product details
Overview
MAX6762TATWD3-T from Maxim Integrated is a dual-voltage window detector IC that monitors both VCC (3.3V nominal) and VCC2 (1.8V nominal) for undervoltage/overvoltage conditions, with ±15% factory-trimmed window tolerance, 100ms minimum reset timeout, latched overvoltage output, manual reset input, and operation from -40°C to +125°C - used in automotive power-rail supervision and industrial DC-DC converter modules.
For engineers reviewing the MAX6762TATWD3-T datasheet, MAX6762TATWD3-T pinout, MAX6762TATWD3-T application, or MAX6762TATWD3-T equivalent, key selection considerations include dual-supply monitoring capability, latched OV behavior, TDFN-8 package footprint, AEC-Q100 qualification (/V variant), and compatibility with 1.8V/3.3V rail sequencing in automotive ECUs and telecom power systems.
Technical Context
The MAX6762TATWD3-T implements independent UV/OV comparators for two supply rails (VCC = 3.3V, VCC2 = 1.8V), each with selectable ±5%/±10%/±15% window via SET pin biasing. It features a latched overvoltage output controlled by OVLATCH, enabling persistent fault indication until cleared - critical for safety-critical power-up validation.
Its internal reference architecture supports operation down to VCC ≥ 1.4V (outputs valid to 1.0V), with 10μA typical supply current, 300ns MR propagation delay, and immunity to transients <300ns. The device uses BiCMOS process and is specified across the full automotive temperature range (-40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Nominal Voltage | 3.3V - primary monitored supply rail; sets UVTH ≈ 2.805V / OVTH ≈ 3.878V at ±15% window |
| VCC2 Nominal Voltage | 1.8V - secondary monitored rail; sets UVTH2 ≈ 1.530V / OVTH2 ≈ 2.115V at ±15% window |
| Timeout Period | 100ms min - ensures stable reset assertion during slow power-rail recovery after brownout |
| Supply Current | 13µA typ at 3.6V - enables always-on supervision in low-power automotive modules |
| Operating Temp Range | -40°C to +125°C - qualified for under-hood and industrial control environments |
| Output Configuration | UV: active-low open-drain; OV: active-low open-drain with latch; RESET: not present - separate UV/OV outputs simplify fault isolation |
| Threshold Hysteresis | 0.7% - prevents chatter during threshold crossing in noisy power systems |
Pinout & Package
MAX6762TATWD3-T is housed in an 8-pin TDFN package (3mm × 3mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND. Pin 1 is MR; Pin 2 is OVLATCH; Pin 3 is UV; Pin 4 is OV; Pin 5 is SET; Pin 6 is VCC2; Pin 7 is GND; Pin 8 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - MR | Active-low manual reset input | Asserts UV/OV outputs immediately; internal 26kΩ pullup enables pushbutton reset without external components |
| 2 - OVLATCH | Overvoltage latch control | High = latch OV output on first overvoltage event; low = clear latch; high-impedance input requires external pullup/pulldown |
| 3 - UV | Active-low undervoltage output | Open-drain; asserts when VCC or VCC2 falls below respective UVTH; no timeout - immediate response |
| 4 - OV | Active-low overvoltage output | Open-drain; latched behavior persists until OVLATCH is pulled low; no timeout - fault retention for diagnostics |
| 5 - SET | Window threshold select | Bias to VCC/2 (≈1.65V) configures ±15% window; eliminates need for external resistor dividers |
| 6 - VCC2 | Secondary supply input & monitor rail | Monitors 1.8V rail; also powers internal circuitry when VCC2 > VCC - supports asymmetric supply architectures |
| 7 - GND | Ground reference | Reference for all thresholds and outputs; EP must be soldered to PCB ground plane for thermal and EMI performance |
| 8 - VCC | Primary supply input & monitor rail | Monitors 3.3V rail; powers device when VCC ≥ VCC2; valid operation down to 1.4V (output logic guaranteed to 1.0V) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises 3.3V (VCC) and 1.8V (VCC2) rails with dedicated UV/OV comparators - eliminates need for two discrete supervisors |
| Latched overvoltage output | OVLATCH pin enables persistent OV fault flagging until system firmware explicitly clears it - essential for ASIL-B diagnostic coverage |
| Factory-trimmed ±15% window | SET pin biased to VCC/2 configures tight 1.8V/3.3V monitoring without external calibration - reduces BOM count and layout area |
| 100ms minimum reset timeout | Guarantees clean system reset during slow power-up sequences in automotive DC-DC converters and infotainment modules |
| AEC-Q100 qualified option | /V suffix variants meet automotive stress testing requirements - MAX6762TATWD3-V is production-qualified for ECU use |
| Low 10μA quiescent current | Enables continuous supervision in always-on domains (e.g., CAN wake-up circuits) without compromising battery drain budgets |
Applications
| Automotive Power Rail Supervision | Industrial DC-DC Converter Module |
|---|---|
Use Scenario: Monitoring core (1.8V) and I/O (3.3V) supplies in engine control units during cold cranking and load dump events. IC Role / Device Role / Timing Role: Dual-rail supervisor providing independent UV/OV detection with latched OV for fault logging and MR-triggered safe state entry. Use Value: Ensures microcontroller remains held in reset until both rails stabilize within ±15% window, preventing erratic execution during voltage transients. |
Use Scenario: Supervising input (3.3V) and output (1.8V) rails of isolated DC-DC converters in programmable logic controllers. IC Role / Device Role / Timing Role: Fault-detection IC asserting UV/OV signals to FPGA-based controller upon rail deviation; latched OV enables post-fault analysis. Use Value: Eliminates need for external comparators and timing RC networks - reduces component count by 4–6 parts per converter channel. |
| Telecom Base Station Power Sequencing | Networking Switch ASIC Supply Validation |
Use Scenario: Validating synchronized ramp-up of 3.3V management and 1.8V signal-processing rails in 5G remote radio units. IC Role / Device Role / Timing Role: Dual-threshold supervisor with manual reset enabling precise power sequencing control and startup coordination. Use Value: SET pin configuration allows field-adjustable window tolerance to accommodate aging-related drift in high-reliability telecom systems. |
Use Scenario: Detecting undervoltage on 1.8V SerDes and overvoltage on 3.3V PHY supplies in enterprise Ethernet switches. IC Role / Device Role / Timing Role: Independent UV/OV open-drain outputs interface directly to ASIC's POR logic and interrupt controller. Use Value: 300ns MR propagation delay and 20μs UV/OV response enable sub-microsecond fault reaction - critical for link integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage window detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6761TATWD3-T | Same pinout, same thresholds, but UV output is active-high push-pull instead of active-low open-drain | Requires level-shifting or logic inversion to interface with ASICs expecting active-low UV signals | Select when system design mandates active-high UV assertion without external inverters |
| TLV809E33DBVR | Single 3.3V supervisor only; no VCC2 monitoring, no OV latch, no SET-adjustable window; SOT-23-5 package | Cannot replace dual-rail functionality - only suitable for partial substitution where only VCC supervision is needed | Choose only for cost-sensitive single-rail applications where latching and dual monitoring are unnecessary |
Compared with MAX6762TATWD3-T, MAX6761TATWD3-T offers identical timing and thresholds but differs in UV output polarity, while TLV809E33DBVR lacks dual-rail capability and fault latching - making MAX6762TATWD3-T uniquely suited for automotive and industrial systems requiring coordinated multi-rail fault detection with diagnostic persistence.
Availability
MAX6762TATWD3-T is available at Aetrix Electronics and suitable for automotive power rail supervision, industrial DC-DC converter modules, and telecom base station power sequencing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX6762TATWD3-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 and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6754–MAX6764 family delivers ultra-low-power, high-accuracy voltage supervision for multi-rail systems - engineered specifically for automotive ECUs, telecom infrastructure, and industrial controllers needing reliable fault detection and diagnostic latching.
FAQ
What is the function of the SET pin on the MAX6762TATWD3-T?
The SET pin on the MAX6762TATWD3-T selects the undervoltage/overvoltage window tolerance: grounded for ±5%, tied to VCC for ±10%, or biased to VCC/2 for ±15%. For MAX6762TATWD3-T, the "W" suffix indicates 1.8V VCC2 and "T" indicates 3.3V VCC, and the "D3" suffix confirms the 100ms timeout - so SET = VCC/2 configures the ±15% window matching its factory-trimmed thresholds.
Does the MAX6762TATWD3-T support AEC-Q100 qualification?
Yes - the MAX6762TATWD3-T is offered in an automotive-grade variant designated MAX6762TATWD3-V, which is fully AEC-Q100 qualified for Grade 1 (-40°C to +125°C). The standard MAX6762TATWD3-T shares identical electrical specs and packaging but is not certified; design-in for automotive applications requires the /V suffix part.
How does the latched overvoltage output work on the MAX6762TATWD3-T?
The MAX6762TATWD3-T's OV output remains asserted (low) after any overvoltage event on VCC or VCC2 until the OVLATCH pin is driven low. Driving OVLATCH high latches the fault; pulling it low clears the latch. This behavior enables diagnostic logging in safety-critical systems - the MAX6762TATWD3-T maintains fault state even if the overvoltage condition self-corrects.
What are the absolute maximum ratings for VCC and VCC2 on the MAX6762TATWD3-T?
The MAX6762TATWD3-T specifies VCC and VCC2 absolute maximum ratings of -0.3V to +6.5V. However, functional operation requires VCC ≥ 1.4V (outputs remain valid down to 1.0V), and VCC2 must be ≤ VCC for proper internal biasing. Exceeding +6.5V risks permanent damage - design margins should maintain ≤6.0V per the recommended operating range.
Can the MAX6762TATWD3-T monitor voltages lower than 1.8V on VCC2?
No - the MAX6762TATWD3-T is factory-trimmed for VCC2 = 1.8V nominal (suffix "W"). While the underlying MAX6762 architecture supports adjustable VCC2 thresholds (e.g., via external divider on LA/TA/RA variants), the "TATWD3" ordering code fixes VCC2 to 1.8V with ±15% window. For sub-1.8V monitoring, select MAX6762TAIWD3-T (1.5V) or MAX6762TAGWD3-T (1.2V).
MAX6762TATWD3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.8V, 3.3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (3x3)
MAX6762TATWD3-T FAQ
1.How can I place an order for MAX6762TATWD3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6762TATWD3-T 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 MAX6762TATWD3-T reliable?
The price and inventory of MAX6762TATWD3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6762TATWD3-T is usually 5 days.
3.What payment methods are accepted for MAX6762TATWD3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6762TATWD3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6762TATWD3-T?
MAX6762TATWD3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6762TATWD3-T 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 MAX6762TATWD3-T?
For technical support, including MAX6762TATWD3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6762TATWD3-T requirements.
6.How does Aetrix verify that MAX6762TATWD3-T is sourced from the original manufacturer or authorized distributors?
All MAX6762TATWD3-T 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 MAX6762TATWD3-T meets industry standards.
7.What is the process for return or replacement of MAX6762TATWD3-T?
All MAX6762TATWD3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6762TATWD3-T, 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 MAX6762TATWD3-T part is unused and in its original packaging.
Return procedure for MAX6762TATWD3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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