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Analog Devices Inc./Maxim Integrated MAX6722UTSVD3+T
- Part No.:
- MAX6722UTSVD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6722UTSVD3+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,158
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Product details
Overview
MAX6722UTSVD3+T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) supplies with factory-trimmed thresholds of 3.075V (VTH1) and 2.925V (VTH2), 210ms minimum reset timeout, push-pull active-low RST output, manual reset input (MR), and watchdog timer. It ensures reliable system boot and brownout recovery in battery-powered embedded controllers.
For engineers reviewing the MAX6722UTSVD3+T datasheet, MAX6722UTSVD3+T pinout, MAX6722UTSVD3+T application, or MAX6722UTSVD3+T equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), guaranteed reset validity down to VCC1/VCC2 = 0.8V, 14µA typical supply current at 3.6V, and integrated watchdog with 35s startup + 1.12s normal timeout modes.
Technical Context
The MAX6722UTSVD3+T implements dual independent voltage comparators with internal 20ppm/°C tempco references, driving a programmable reset timeout counter that restarts on any threshold violation, MR assertion, or watchdog timeout. Its push-pull RST output is referenced to VCC1 and sinks up to 3.2mA at 4.5V.
This device integrates a dual-mode watchdog timer: after power-up or reset, it enters a 35s minimum startup period before switching to 1.12s minimum normal timeout mode upon first WDI edge detection. MR features internal 50kΩ pullup to VCC1 and 100ns glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.075V (typ), ±1.5% over -40°C to +85°C - sets primary supply brownout detection point for 3.3V systems |
| VCC2 Threshold | 2.925V (typ), ±1.5% over -40°C to +85°C - enables secondary supply monitoring for I/O or auxiliary rails |
| Reset Timeout | 210ms (min) - ensures µP completes full initialization before release from reset |
| Supply Current | 14µA (typ) at 3.6V - supports >10-year battery life in always-on portable equipment |
| Reset Validity | Down to VCC1 or VCC2 = 0.8V - guarantees correct logic state during deep brownout conditions |
| Watchdog Modes | 35s min startup + 1.12s min normal timeout - accommodates complex boot sequences then tight runtime supervision |
Pinout & Package
MAX6722UTSVD3+T is housed in a RoHS-compliant 6-pin SOT23-6 package (1.6mm × 2.9mm × 1.1mm), optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts when VCC1/VCC2 drop below thresholds or MR is pulled low |
| 2 | GND | System ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal circuitry when above VCC1 and sets VCC2 threshold monitor |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers device when above VCC2 and sets VCC1 threshold monitor |
| 6 | WDI | Watchdog input; rising/falling edge resets 1.12s timeout counter; 35s initial window allows full system boot |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Factory-trimmed VTH1 = 3.075V / VTH2 = 2.925V with 20ppm/°C tempco - eliminates external resistor networks for precision rail supervision |
| Push-pull RST output | Sinks 3.2mA at 4.5V without external pullup - reduces BOM count and improves noise immunity vs. open-drain alternatives |
| Guaranteed reset validity | Operates correctly with VCC1 or VCC2 ≥ 0.8V - ensures deterministic behavior during severe undervoltage events |
| Low quiescent current | 14µA typical at 3.6V - extends battery runtime in always-on IoT sensors and wearables |
| Dual-mode watchdog timer | 35s startup + 1.12s normal timeout - prevents false resets during boot while enabling rapid fault detection in steady-state operation |
Applications
| Industrial PLC Controllers | Portable Medical Devices |
|---|---|
Use Scenario: Supervising dual-rail power (3.3V core, 2.8V I/O) in DIN-rail mounted programmable logic controllers exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Dual-voltage supervisor ensuring µP reset remains asserted until both rails stabilize post-power-cycle or brownout. Use Value: Prevents firmware corruption by guaranteeing 210ms minimum reset hold time and validating reset logic down to 0.8V on either rail. |
Use Scenario: Power management in handheld glucose meters using coin-cell batteries where supply voltage decays gradually during discharge. IC Role / Device Role / Timing Role: Brownout detector monitoring both main regulator (3.0V) and sensor bias rail (2.9V) to initiate controlled shutdown before data loss. Use Value: 14µA supply current extends battery life beyond 2 years; 20ppm/°C tempco maintains threshold accuracy across -20°C to +50°C operating range. |
| Network Edge Routers | Smart Energy Meters |
Use Scenario: Ensuring reliable boot sequence in fanless enterprise routers with 3.3V CPU core and 2.5V PHY interface supplies subject to transient load spikes. IC Role / Device Role / Timing Role: Dual-supply supervisor with manual reset and watchdog, coordinating reset timing between processor and communication peripherals. Use Value: Push-pull RST output drives multiple downstream ICs directly; MR input enables field-service reset without power cycling. |
Use Scenario: Monitoring isolated DC-DC outputs (3.3V MCU rail, 2.8V metrology ADC rail) in ANSI C12.22-compliant electricity meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Fault-tolerant power supervisor asserting reset if either rail drops below specification during grid voltage sags. Use Value: Guaranteed reset validity at 0.8V enables fail-safe operation during sustained brownouts common in rural distribution grids. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6722UTSVD2+T | 140ms minimum reset timeout vs. 210ms for MAX6722UTSVD3+T | Shorter hold time may be insufficient for slow-starting regulators or large-capacitance loads | Select when faster system release from reset is required and timing margin allows |
| TPS3808G33DBVR | Single-supply monitor (3.3V only), no VCC2 input or WDI; 200ms timeout; 1.6µA supply current | Lacks dual-rail capability and watchdog - suitable only for single-rail systems without runtime supervision | Choose for ultra-low-power single-rail applications where dual monitoring is unnecessary |
Compared with MAX6722UTSVD3+T, the MAX6722UTSVD2+T offers shorter reset hold time but identical voltage thresholds and watchdog functionality, while TPS3808G33DBVR trades dual-supply capability and watchdog for significantly lower quiescent current in simpler single-rail designs.
Availability
MAX6722UTSVD3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical devices, and network edge routers requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6722UTSVD3+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer markets.
The MAX6715–MAX6729 family delivers ultra-low-voltage dual/triple supervisory circuits targeting space-constrained, battery-operated, and multirail embedded systems requiring precise, low-power power-monitoring with integrated watchdog and manual reset.
FAQ
What are the exact reset threshold voltages for MAX6722UTSVD3+T?
The MAX6722UTSVD3+T has factory-trimmed reset thresholds of 3.075V (VTH1, primary supply) and 2.925V (VTH2, secondary supply), with ±1.5% tolerance over the full -40°C to +85°C operating temperature range. These values correspond to the 'TS' suffix in the Reset Voltage Threshold Suffix Guide and are confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6722UTSVD3+T support watchdog functionality, and what are its timing modes?
Yes, MAX6722UTSVD3+T includes a dual-mode watchdog timer: a 35s minimum startup period after power-up or reset, followed by a 1.12s minimum normal timeout period triggered by the first valid WDI edge. This architecture accommodates lengthy boot sequences while ensuring rapid fault detection during runtime operation.
What is the package type and pin count of MAX6722UTSVD3+T?
MAX6722UTSVD3+T uses a 6-pin SOT23-6 package (1.6mm × 2.9mm footprint, 1.1mm height) with lead-free (+T) termination. Pin assignments are GND (2), MR (3), VCC2 (4), VCC1 (5), and WDI (6), with RST (1) as the active-low push-pull reset output.
How does MAX6722UTSVD3+T ensure reset validity during deep brownout conditions?
MAX6722UTSVD3+T guarantees correct reset output logic state even when VCC1 or VCC2 drops to 0.8V - verified across temperature and process corners. This ensures deterministic system behavior during severe undervoltage events where other supervisors may enter undefined states.
What is the supply current consumption of MAX6722UTSVD3+T at typical operating conditions?
MAX6722UTSVD3+T draws 14µA typical supply current at 3.6V and +25°C, with total ICC1 + ICC2 remaining below 39µA maximum across the full -40°C to +85°C temperature range. This ultra-low quiescent current enables multi-year battery operation in always-on portable equipment.
MAX6722UTSVD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6722UTSVD3+T FAQ
1.How can I place an order for MAX6722UTSVD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTSVD3+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 MAX6722UTSVD3+T reliable?
The price and inventory of MAX6722UTSVD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTSVD3+T is usually 5 days.
3.What payment methods are accepted for MAX6722UTSVD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTSVD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTSVD3+T?
MAX6722UTSVD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTSVD3+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 MAX6722UTSVD3+T?
For technical support, including MAX6722UTSVD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTSVD3+T requirements.
6.How does Aetrix verify that MAX6722UTSVD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6722UTSVD3+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 MAX6722UTSVD3+T meets industry standards.
7.What is the process for return or replacement of MAX6722UTSVD3+T?
All MAX6722UTSVD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTSVD3+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 MAX6722UTSVD3+T part is unused and in its original packaging.
Return procedure for MAX6722UTSVD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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