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Analog Devices Inc./Maxim Integrated MAX6762TAZAD3+
- Part No.:
- MAX6762TAZAD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6762TAZAD3+.pdf
- Description:
- LOW-POWER, SINGLE/DUAL-VOLTAGE W
- Quantity:
- Payment:
- Shipping:
Inventory:3,661
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Product details
Overview
The MAX6762TAZAD3+ from Analog Devices is a dual-voltage window detector IC that monitors both VCC (3.3V nominal) and VCC2 (2.5V nominal) supplies with ±15% factory-trimmed thresholds, 100ms minimum reset timeout, latched overvoltage output, manual reset input, and operation from -40°C to +125°C. It asserts independent UV and OV outputs when either supply deviates beyond its window, supporting fail-safe microprocessor supervision in DC-DC converter modules.
For engineers reviewing the MAX6762TAZAD3+ datasheet, MAX6762TAZAD3+ pinout, MAX6762TAZAD3+ application, or MAX6762TAZAD3+ equivalent, key selection criteria include dual-supply monitoring capability, latched OV function for fault retention, 100ms timeout period, TDFN-8 package compatibility, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6762TAZAD3+ implements two independent voltage comparators with internal reference and precision resistor dividers to monitor VCC (3.3V) and VCC2 (2.5V), each with selectable ±5%/±10%/±15% window via the SET pin. Its latched OV output remains asserted until cleared by OVLATCH, enabling persistent fault indication without continuous monitoring.
It features a manual reset input (MR) with 26kΩ internal pullup, propagation delay of 300ns on MR assertion, and 100ms–320ms timeout on deassertion. The device operates with VCC ≥1.4V (outputs valid down to 1.0V), draws only 13µA typical supply current at 3.6V, and supports push-pull or open-drain output configurations per variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Nominal Voltage | 3.3V - Monitors primary system supply with factory-trimmed threshold |
| VCC2 Nominal Voltage | 2.5V - Monitors secondary supply (e.g., core rail) with independent detection |
| Window Tolerance | ±15% - Set by biasing SET pin to VCC/2; enables robust margin against tolerance stack-up |
| Reset Timeout Period | 100ms min - Ensures stable processor reset after power recovery; avoids premature release |
| Supply Current (ICC) | 13µA typ at 3.6V - Enables battery-backed or ultra-low-power systems |
| Operating Temperature | -40°C to +125°C - Qualified for under-hood automotive and industrial environments |
| OV Latch Function | Yes - OVLATCH pin controls persistent OV assertion until cleared; critical for fault logging |
Pinout & Package
The MAX6762TAZAD3+ is housed in an 8-pin TDFN package (package code T833+2, outline 21-0137) with exposed pad connected to GND. Thermal resistance θJA is 41°C/W on multilayer board, enabling high-density placement without forced cooling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - MR | Active-low manual reset input | Asserts UV and RESET outputs; internally pulled up to VCC (26kΩ); 4µs minimum pulse width |
| 2 - OVLATCH | Overvoltage latch control | High = latch OV; low = clear latch; high-impedance input requiring external pullup/pulldown |
| 3 - UV | Active-low undervoltage output | Push-pull configuration; asserts when VCC or VCC2 falls below UVTH; deasserts after timeout |
| 4 - OV | Active-low overvoltage output | Open-drain; asserts immediately on OV condition; latched if OVLATCH = high; no timeout |
| 5 - SET | Threshold window select | Bias to VCC/2 for ±15% window; determines hysteresis and trip margins for both supplies |
| 6 - VCC2 | Secondary monitored supply input | Input for second voltage rail (2.5V nominal); powers internal circuitry when VCC2 > VCC |
| 7 - GND | Ground reference | Common return for all analog and digital functions; connects to exposed pad |
| 8 - VCC | Primary monitored supply & power | Monitors 3.3V rail and powers device; requires 0.1µF bypass capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC (3.3V) and VCC2 (2.5V) with separate UV/OV outputs - eliminates need for two discrete supervisors |
| Latched overvoltage output | OVLATCH pin enables persistent fault flagging until host system explicitly clears - essential for diagnostic logging in automotive ECUs |
| Factory-trimmed ±15% window | SET pin biased to VCC/2 configures precise 15% tolerance band - reduces BOM count vs. adjustable external resistors |
| 100ms minimum reset timeout | D3 suffix guarantees ≥100ms reset hold time - ensures reliable CPU initialization after brownout recovery |
| Low 13µA supply current | Enables always-on supervision in battery-critical applications such as telematics and ADAS sensors |
| AEC-Q100 qualified | Validated for automotive Grade 1 (-40°C to +125°C) - meets functional safety requirements for powertrain and chassis systems |
Applications
| Power Supply Monitoring in Automotive ECUs | Redundant Rail Supervision in Telecom Base Stations |
|---|---|
Use Scenario: Monitoring 3.3V I/O and 2.5V core rails in engine control units where transient immunity and fault retention are mandatory. IC Role / Device Role / Timing Role: Dual-rail supervisor with latched OV output and 100ms reset timeout - provides deterministic reset sequencing and persistent fault capture. Use Value: Eliminates risk of silent failure during voltage sags; enables post-fault diagnostics via latched OV state without host polling. | Use Scenario: Supervising primary and backup 3.3V/2.5V supplies in 5G base station power management units subject to rapid load transients. IC Role / Device Role / Timing Role: Independent UV/OV detection with ±15% window and 300ns MR propagation - ensures immediate response to rail collapse while rejecting sub-microsecond noise. Use Value: Prevents false resets during RF amplifier switching events; maintains system uptime through fast, accurate rail validation. |
| Industrial PLC Power Integrity Assurance | DC-DC Converter Module Fault Protection |
Use Scenario: Verifying stable operation of isolated 3.3V logic and 2.5V FPGA configuration rails in programmable logic controllers deployed in harsh factory environments. IC Role / Device Role / Timing Role: Dual-supply window detector with -40°C to +125°C operation and manual reset - delivers guaranteed functionality across wide thermal excursions. Use Value: Guarantees deterministic startup and brownout recovery in uncooled enclosures; simplifies thermal design by removing need for external temperature compensation. | Use Scenario: Protecting downstream loads in compact DC-DC modules where space constraints prohibit discrete supervision solutions. IC Role / Device Role / Timing Role: Integrated dual-rail monitor in 3mm × 3mm TDFN-8 package with exposed pad - enables high-power density without sacrificing supervision fidelity. Use Value: Reduces PCB area by >40% vs. dual-SOT23 solution; thermal resistance of 41°C/W allows full performance at 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage window detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6761TAZAD3+ | Same pinout, identical electrical specs, but active-high UV output instead of active-low | Requires inverted logic handling in host firmware or external inverter; otherwise drop-in compatible | Select when system architecture expects high-true undervoltage signaling |
| TLV809E33DBZR | Single 3.3V supervisor only; no VCC2 monitoring, no OV latch, no SET adjustability; SOT23-3 package | Limited to basic reset generation; cannot replace dual-rail or fault-retention requirements | Use only for cost-sensitive, single-rail applications where latching and secondary rail monitoring are unnecessary |
Compared with MAX6761TAZAD3+, the MAX6762TAZAD3+ provides active-low UV output for direct interface with standard reset inputs, while TLV809E33DBZR lacks dual-supply capability and fault retention-making it unsuitable for automotive or telecom systems requiring comprehensive rail supervision.
Availability
The MAX6762TAZAD3+ is available at Aetrix Electronics and suitable for automotive ECUs, telecom base stations, industrial PLCs, and DC-DC converter modules requiring stable component supply with guaranteed long-term availability and AEC-Q100 compliance.
Supply support for MAX6762TAZAD3+ 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.
The MAX6762TAZAD3+ belongs to the MAX6754–MAX6764 family of low-power window detectors, designed specifically for robust, dual-rail power supply supervision in mission-critical automotive and industrial systems.
FAQ
What is the exact VCC and VCC2 voltage monitoring range for the MAX6762TAZAD3+?
The MAX6762TAZAD3+ monitors VCC at 3.3V nominal (±15% = 2.805V to 3.795V) and VCC2 at 2.5V nominal (±15% = 2.125V to 2.875V), as defined by its TA (3.3V) and ZA (2.5V) suffixes. These thresholds are factory-trimmed and specified over -40°C to +125°C. The device does not support externally adjustable thresholds - only the MAX6763/MAX6764 variants offer that capability.
Does the MAX6762TAZAD3+ support latched overvoltage detection, and how is it controlled?
Yes, the MAX6762TAZAD3+ supports latched overvoltage detection via the OVLATCH pin. When OVLATCH is driven high, the OV output remains asserted even after the overvoltage condition clears, retaining the fault state until OVLATCH is actively driven low. This behavior is confirmed in the functional diagram (Figure 3) and Electrical Characteristics table for MAX6760–MAX6762 variants.
What is the reset timeout behavior of the MAX6762TAZAD3+, and how is it selected?
The MAX6762TAZAD3+ has a D3 suffix, specifying a minimum 100ms reset timeout period (185ms typical, 320ms max). This timeout applies to UV and RESET outputs after VCC or VCC2 recovers above their undervoltage thresholds. The timeout is fixed by internal circuitry - no external components are required to set or adjust it.
Can the MAX6762TAZAD3+ operate with VCC below 3.3V, and what is its minimum functional voltage?
Yes, the MAX6762TAZAD3+ operates with VCC as low as 1.4V for full monitoring functionality, and its outputs remain valid (in correct logic state) down to VCC = 1.0V. This is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics tables under "Note 2", ensuring reliable brownout detection during deep supply sag.
Is the MAX6762TAZAD3+ AEC-Q100 qualified, and which grade applies?
Yes, the MAX6762TAZAD3+ is AEC-Q100 qualified for Grade 1, covering the full operating temperature range of -40°C to +125°C. This qualification is documented in the "Benefits and Features" section and confirmed in the Ordering Information of the datasheet, making it suitable for automotive powertrain and chassis applications.
MAX6762TAZAD3+ 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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.5V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX6762TAZAD3+ FAQ
1.How can I place an order for MAX6762TAZAD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6762TAZAD3+ 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 MAX6762TAZAD3+ reliable?
The price and inventory of MAX6762TAZAD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6762TAZAD3+ is usually 5 days.
3.What payment methods are accepted for MAX6762TAZAD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6762TAZAD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6762TAZAD3+?
MAX6762TAZAD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6762TAZAD3+ 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 MAX6762TAZAD3+?
For technical support, including MAX6762TAZAD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6762TAZAD3+ requirements.
6.How does Aetrix verify that MAX6762TAZAD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6762TAZAD3+ 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 MAX6762TAZAD3+ meets industry standards.
7.What is the process for return or replacement of MAX6762TAZAD3+?
All MAX6762TAZAD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6762TAZAD3+, 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 MAX6762TAZAD3+ part is unused and in its original packaging.
Return procedure for MAX6762TAZAD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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