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Analog Devices Inc./Maxim Integrated MAX6722AUTSVD3+T
- Part No.:
- MAX6722AUTSVD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722AUTSVD3+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6722AUTSVD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (4.50V factory-trimmed threshold) and VCC2 (2.85V threshold), with 140ms reset timeout, push-pull active-low RST output, and manual-reset input. It ensures reliable system reset during power-up, brownout, or fault conditions in battery-powered telecom and industrial control systems.
For engineers reviewing the MAX6722AUTSVD3+T datasheet, MAX6722AUTSVD3+T pinout, MAX6722AUTSVD3+T application, or MAX6722AUTSVD3+T equivalent, key selection criteria include dual-rail voltage monitoring accuracy (±1.5% over -40°C to +125°C), guaranteed reset validity down to VCC1/VCC2 = 0.8V, low 14µA typical supply current at 3.6V, and compatibility with bidirectional µP reset I/O via 4.7kΩ series resistor.
Technical Context
The MAX6722AUTSVD3+T integrates two independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.500–4.750V, VTH2 = 2.850–3.000V), a 140ms reset timeout timer, and a manual-reset input with internal 50kΩ pullup to VCC1. Its push-pull RST output is referenced to VCC1 and asserts low when either supply falls below threshold or MR is pulled low.
It operates across -40°C to +125°C with guaranteed functionality at VCC1 or VCC2 ≥ 0.8V, features 20ppm/°C reset threshold tempco, 0.5% hysteresis, and immunity to sub-20µs VCC transients - enabling robust operation in noisy, thermally demanding embedded environments without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.500V (min), 4.625V (typ), 4.750V (max) - factory-trimmed for precise 4.5V rail supervision |
| VCC2 Reset Threshold | 2.850V (min), 2.925V (typ), 3.000V (max) - factory-trimmed for accurate 2.85V secondary rail monitoring |
| Reset Timeout Period | 140ms (min), 210ms (typ), 280ms (max) - ensures µP completes boot sequence before release |
| Supply Current | 14µA (typ) at 3.6V - enables multi-year operation in coin-cell–powered IoT nodes |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial edge controllers |
| Reset Output Type | Push-pull, active-low RST - eliminates need for external pullup and supports direct µP reset pin drive |
| MR Input Pullup | 50kΩ internal to VCC1 - simplifies manual reset with momentary switch to GND, no external components |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR activation |
| 2 | GND | Ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Active-low manual-reset input with internal 50kΩ pullup to VCC1; reset persists for full timeout after release |
| 4 | VCC2 | Secondary supply input (0.8V–5.5V); powers internal circuitry when > VCC1 and sets VCC2 comparator reference |
| 5 | VCC1 | Primary supply input (0.8V–5.5V); powers device core and defines RST output voltage level |
| 6 | NC | No connect - pin left unconnected per datasheet; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of primary (4.5V) and secondary (2.85V) rails with separate thresholds and hysteresis |
| Guaranteed reset validity down to 0.8V | Ensures correct RST logic state even during deep brownout - critical for fail-safe shutdown in safety-critical systems |
| 140ms factory-programmed timeout | Eliminates external timing components and avoids BOM proliferation across product variants |
| Push-pull RST output | Drives µP reset pin directly without pullup resistor - reduces PCB area and improves noise immunity vs open-drain |
| Internal MR pullup | Enables single-switch manual reset implementation - removes need for external biasing and saves bill-of-material cost |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring 4.5V backplane supply and 2.85V FPGA core rail in remote radio units. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting reset if either rail drops below spec, holding reset for 140ms to ensure clean FPGA reconfiguration. Use Value: Prevents metastability and configuration corruption during AC line sags or hot-swap events. |
Use Scenario: Supervising 4.5V system rail and 2.85V isolated sensor interface supply in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Fault-detection engine triggering controlled shutdown when either supply fails, with MR support for field-service reset. Use Value: Enables deterministic recovery from undervoltage faults without requiring host µP intervention. |
| Battery-Powered Test Equipment | Automotive ADAS Camera Modules |
|
Use Scenario: Ensuring reliable boot of ARM Cortex-M4 host and 2.85V image sensor supply in handheld oscilloscopes. IC Role / Device Role / Timing Role: Primary/secondary voltage monitor with 140ms timeout guaranteeing µP initialization completes before peripheral enable. Use Value: Eliminates boot hangs caused by marginal lithium-ion battery voltage during cold start. |
Use Scenario: Validating 4.5V camera module main rail and 2.85V ISP core supply in rear-view camera ECU. IC Role / Device Role / Timing Role: AEC-Q100-compliant supervisory circuit (per MAX6719AUTTWD1/V+T family qualification) ensuring ASIL-B reset integrity. Use Value: Meets automotive functional safety requirements for power-rail fault detection and response timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6722AUTSD3+T | Same SOT23-6 package and pinout; identical VCC1/VCC2 thresholds and 140ms timeout, but open-drain RST output instead of push-pull | Requires external pullup resistor; suitable where µP reset pin is open-drain or level-shifted | Select when interfacing with legacy µPs requiring open-drain reset assertion or when board layout already includes pullup |
| TPS3808G33DBVR | Single-supply (3.3V only) supervisor; 200ms timeout; 3.08V threshold; 1.6µA quiescent current; SOT23-6 | Lacks dual-rail monitoring capability; cannot supervise independent VCC1/VCC2 rails simultaneously | Choose only for cost-sensitive single-rail applications where secondary rail supervision is handled elsewhere |
Compared with MAX6722AUTSVD3+T, the MAX6722AUTSD3+T offers identical supervision logic but requires external biasing for reset assertion, while the TPS3808G33DBVR reduces current draw but sacrifices dual-voltage monitoring - making MAX6722AUTSVD3+T uniquely suited for space-constrained, dual-rail systems needing guaranteed push-pull drive and wide temperature operation.
Availability
MAX6722AUTSVD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and battery-powered test equipment requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-aligned reliability.
Supply support for MAX6722AUTSVD3+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 high-reliability industrial, automotive, and communications systems.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for multirail embedded systems where simultaneous monitoring of primary and secondary supplies is essential for safe boot and fault recovery.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6722AUTSVD3+T?
The MAX6722AUTSVD3+T has a factory-trimmed VCC1 reset threshold of 4.500V (minimum), 4.625V (typical), and 4.750V (maximum) at 25°C, with ±1.5% tolerance over -40°C to +125°C. This corresponds to the 'D' suffix in the Reset Voltage Threshold Suffix Guide and is specifically calibrated for 4.5V rail supervision.
Does the MAX6722AUTSVD3+T support monitoring a third voltage rail?
No, the MAX6722AUTSVD3+T is a dual-supply supervisor and does not include the RSTIN input required for adjustable third-rail monitoring. That feature is present only in variants like MAX6723A–MAX6727A. The MAX6722AUTSVD3+T monitors only VCC1 and VCC2 with fixed thresholds.
What is the function of Pin 6 on the MAX6722AUTSVD3+T?
Pin 6 on the MAX6722AUTSVD3+T is NC (No Connect). It is not internally bonded and must be left unconnected per the datasheet. Connecting it to any potential may cause unpredictable behavior or damage.
Can the MAX6722AUTSVD3+T operate reliably at VCC1 = 0.9V?
Yes, the MAX6722AUTSVD3+T guarantees correct reset output logic state down to VCC1 or VCC2 = 0.8V. At 0.9V, both the internal comparators and push-pull RST driver remain fully functional, enabling fail-safe operation during deep brownout conditions common in battery-depleted systems.
How does the manual-reset input (MR) behave on the MAX6722AUTSVD3+T?
The MR input on the MAX6722AUTSVD3+T is active-low with an internal 50kΩ pullup to VCC1. Pulling MR low forces RST low immediately; reset remains asserted for the full 140ms timeout period after MR returns high. Leaving MR unconnected defaults to high, disabling manual reset.
MAX6722AUTSVD3+T 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:
- 1.575V, 2.925V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6722AUTSVD3+T FAQ
1.How can I place an order for MAX6722AUTSVD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722AUTSVD3+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 MAX6722AUTSVD3+T reliable?
The price and inventory of MAX6722AUTSVD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722AUTSVD3+T is usually 5 days.
3.What payment methods are accepted for MAX6722AUTSVD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722AUTSVD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722AUTSVD3+T?
MAX6722AUTSVD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722AUTSVD3+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 MAX6722AUTSVD3+T?
For technical support, including MAX6722AUTSVD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722AUTSVD3+T requirements.
6.How does Aetrix verify that MAX6722AUTSVD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6722AUTSVD3+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 MAX6722AUTSVD3+T meets industry standards.
7.What is the process for return or replacement of MAX6722AUTSVD3+T?
All MAX6722AUTSVD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722AUTSVD3+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 MAX6722AUTSVD3+T part is unused and in its original packaging.
Return procedure for MAX6722AUTSVD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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