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Analog Devices Inc./Maxim Integrated MAX6722UTWGD3
- Part No.:
- MAX6722UTWGD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTWGD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6722UTWGD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms reset timeout, push-pull active-low RST output, and watchdog timer disabled. It guarantees valid reset assertion down to VCC1 or VCC2 = 0.8V and draws only 14µA typical supply current at 3.6V - used in telecom power management and industrial embedded controllers requiring reliable brownout detection.
For engineers reviewing the MAX6722UTWGD3 datasheet, MAX6722UTWGD3 pinout, MAX6722UTWGD3 application, or MAX6722UTWGD3 equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and two validated alternative parts - all grounded in Maxim's official specifications for the MAX6722UTWGD3 variant.
Technical Context
The MAX6722UTWGD3 integrates dual independent voltage monitors with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), a 210ms minimum reset timeout (D3 suffix), and push-pull RST output referenced to VCC1. It supports manual reset via MR input with internal 50kΩ pullup and operates across –40°C to +125°C.
No watchdog or RSTIN/PFI functionality is enabled in this variant - confirmed by its part number suffix "D3" (timeout) and absence of WDI, RSTIN, or PFI pins in its 6-pin SOT23 configuration. Reset assertion occurs when either VCC1 or VCC2 falls below its threshold, and reset remains active for ≥210ms after both supplies recover.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed falling threshold; ensures reset triggers before 5V rail collapse) |
| VCC2 Threshold | 3.075V (factory-trimmed falling threshold; matches common 3.3V I/O supply margin) |
| Reset Timeout | 210ms min (D3 suffix; provides sufficient hold time for processor initialization after power recovery) |
| Supply Current | 14µA typ at 3.6V (ultra-low quiescent current enables battery-backed or energy-sensitive systems) |
| Operating Temp | –40°C to +125°C (supports automotive under-hood and industrial control environments) |
| Reset Output Type | Push-pull active-low RST (no external pullup required; drives directly into µP reset pin) |
| Valid Reset Down To | VCC1 or VCC2 ≥ 0.8V (guaranteed logic state integrity during deep brownout conditions) |
Pinout & Package
Package: 6-pin SOT23 (lead-free, RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output; asserts low on VCC1/VCC2 undervoltage and holds ≥210ms |
| 2 | GND | Ground reference for all internal comparators and output drivers |
| 3 | MR | Active-low manual-reset input; internal 50kΩ pullup to VCC1; resets system when pulled low |
| 4 | VCC2 | Secondary supply input (monitored at 3.075V); powers internal circuitry when > VCC1 |
| 5 | VCC1 | Primary supply input (monitored at 4.625V); powers device when > VCC2; reference for RST output |
| 6 | NC | No connect - unused pin per MAX6722UTWGD3 configuration (no WDI, RSTIN, or PFI support) |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed voltage monitoring | Enables precise, zero-calibration supervision of 5V/3.3V rails without external resistors |
| 210ms guaranteed reset timeout | Ensures µP completes boot sequence before release, eliminating race conditions in firmware startup |
| Push-pull RST output | Eliminates need for external pullup resistor - reduces BOM count and layout area in space-constrained designs |
| 0.8V minimum operating voltage | Provides deterministic reset behavior during severe brownouts where other supervisors fail silently |
| 14µA typical supply current | Extends battery life in portable equipment and enables always-on monitoring in low-power IoT nodes |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring primary 5V DC-DC output and secondary 3.3V I/O rail in base station power module. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting reset if either rail drops below spec during hot-swap or load transient. Use Value: Prevents corrupted FPGA configuration or DSP lockup by enforcing 210ms reset hold time after rail recovery. |
Use Scenario: Ensuring clean restart of ARM Cortex-M7 controller after AC line sag in factory automation cabinet. IC Role / Device Role / Timing Role: Brownout detector with manual reset override for field technician intervention. Use Value: Guarantees reset validity down to 0.8V VCC1, enabling safe shutdown even during deep undervoltage events. |
| Medical Diagnostic Imaging | Automotive ADAS Camera Module |
Use Scenario: Supervising 5V analog front-end supply and 3.3V digital core supply in ultrasound signal processor. IC Role / Device Role / Timing Role: Fault-tolerant reset generator with push-pull output driving isolated reset buffer. Use Value: 14µA quiescent current minimizes self-heating in thermally sensitive imaging modules. |
Use Scenario: Validating 5V camera sensor supply and 3.3V SoC I/O supply in rear-view camera ECU. IC Role / Device Role / Timing Role: AEC-Q100 grade-compatible supervisor (via -40°C to +125°C operation) for ASIL-B systems. Use Value: Immunity to short VCC transients prevents spurious resets during ignition noise or load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6722UTWD3+T | Same thresholds (4.625V/3.075V), same 210ms timeout, identical 6-pin SOT23 package - differs only in tape-and-reel packaging (no functional difference) | Identical use cases; selected when volume procurement requires reel format | Drop-in replacement for MAX6722UTWGD3 in production lines using automated pick-and-place feeders |
| TPS3808G33DBVR | Single-supply monitor (3.3V only), no VCC2 input; 200ms timeout; 1.8–6V supply range; open-drain RST | Lacks dual-rail capability - suitable only when monitoring one rail or adding discrete second monitor | Choose when cost sensitivity outweighs dual-monitoring requirement and external pullup is acceptable |
Compared with MAX6722UTWGD3, MAX6722UTWD3+T offers identical electrical performance in reel format, while TPS3808G33DBVR sacrifices dual-voltage supervision for lower unit cost and broader supply range - making it viable only in single-rail designs where layout space allows an extra pullup resistor.
Availability
MAX6722UTWGD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and medical imaging systems requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for MAX6722UTWGD3 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 MAX6715A–MAX6729A family delivers ultra-low-voltage, multi-rail supervisory circuits optimized for reliability-critical embedded systems where power integrity must be enforced across multiple supply domains.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6722UTWGD3?
The MAX6722UTWGD3 has a factory-trimmed VCC1 reset threshold of 4.625V (falling), specified with ±1.5% tolerance over temperature. This value is fixed by the "T" suffix in the part number and is confirmed in Maxim's Reset Voltage Threshold Suffix Guide. The MAX6722UTWGD3 uses this precise threshold to detect 5V rail collapse before downstream logic fails.
Does the MAX6722UTWGD3 support watchdog functionality?
No, the MAX6722UTWGD3 does not include watchdog functionality. Its part number lacks WDI-related suffixes (e.g., "W" or "X"), and the 6-pin SOT23 pinout omits WDI - confirmed by the Pin Description table showing Pin 6 as NC. Watchdog features are present only in MAX6721A–MAX6729A variants with dedicated WDI pins and appropriate suffixes.
What is the function of Pin 6 on the MAX6722UTWGD3?
Pin 6 on the MAX6722UTWGD3 is a no-connect (NC) terminal - physically present but internally unconnected. It is not tied to WDI, RSTIN, PFI, or any other function. This is consistent with the MAX6722 series' 6-pin SOT23 configuration for dual-supply-only variants, and must remain floating or grounded per PCB layout best practices.
Can the MAX6722UTWGD3 monitor a 1.8V supply as VCC2?
No - the MAX6722UTWGD3 is factory-configured for VCC2 = 3.075V (suffix "W"), not 1.8V. While the MAX6715A–MAX6729A family supports VCC2 thresholds from 0.79V to 3.08V, the specific MAX6722UTWGD3 variant is trimmed to 3.075V. For 1.8V monitoring, select a different variant such as MAX6722UTSGD3 (1.710V VCC2 threshold).
Is the MAX6722UTWGD3 compatible with 1.2V logic levels on the MR input?
Yes - the MR input accepts standard CMOS logic levels: VIH ≥ 0.7 × VCC1 and VIL ≤ 0.3 × VCC1. With VCC1 = 5V, MR recognizes logic high above 3.5V and logic low below 1.5V. Therefore, a 1.2V logic signal cannot directly drive MR; level-shifting or a pullup to VCC1 is required to meet the 0.7×VCC1 threshold.
MAX6722UTWGD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.11V, 1.665V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6722UTWGD3 FAQ
1.How can I place an order for MAX6722UTWGD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTWGD3 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 MAX6722UTWGD3 reliable?
The price and inventory of MAX6722UTWGD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTWGD3 is usually 5 days.
3.What payment methods are accepted for MAX6722UTWGD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTWGD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTWGD3?
MAX6722UTWGD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTWGD3 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 MAX6722UTWGD3?
For technical support, including MAX6722UTWGD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTWGD3 requirements.
6.How does Aetrix verify that MAX6722UTWGD3 is sourced from the original manufacturer or authorized distributors?
All MAX6722UTWGD3 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 MAX6722UTWGD3 meets industry standards.
7.What is the process for return or replacement of MAX6722UTWGD3?
All MAX6722UTWGD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTWGD3, 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 MAX6722UTWGD3 part is unused and in its original packaging.
Return procedure for MAX6722UTWGD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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