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Analog Devices Inc./Maxim Integrated MAX6722AUTSVD3+
- Part No.:
- MAX6722AUTSVD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6722AUTSVD3+.pdf
- Description:
- MAX6722AUTSVD3+
- Quantity:
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Product details
Overview
MAX6722AUTSVD3+ 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 (3.00V threshold), with 280ms reset timeout, push-pull active-low RST output, and manual-reset input. It ensures reliable system reset during brownout in telecom power systems and battery-backed industrial controllers.
For engineers reviewing the MAX6722AUTSVD3+ datasheet, MAX6722AUTSVD3+ pinout, MAX6722AUTSVD3+ application, or MAX6722AUTSVD3+ 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 15µA supply current at 3.6V, and integrated manual-reset with 50kΩ internal pullup.
Technical Context
The MAX6722AUTSVD3+ implements independent comparators for VCC1 and VCC2, each with 0.5% hysteresis referenced to their respective thresholds, and asserts reset when either supply falls below its trimmed level. Its reset timeout timer guarantees minimum 280ms assertion after all supplies recover, with restart-on-fall behavior if voltage dips again before timeout completes.
This variant includes MR (active-low manual-reset input with internal 50kΩ pullup to VCC1), push-pull RST output referenced to VCC1, and no watchdog, RSTIN, PFI, or PFO functions-confirmed by suffix "D3" (280ms timeout) and "V" (VCC1=4.50V, VCC2=3.00V) per Maxim's Reset Voltage Threshold and Timeout Suffix Guides.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.500V (factory-trimmed, ±1.5% over temp, enables precise 4.5V rail supervision) |
| VCC2 Threshold | 3.000V (factory-trimmed, ±1.5% over temp, supports 3.0V I/O or core supply monitoring) |
| Reset Timeout | 280ms min (ensures μP completes full boot sequence before release) |
| Supply Current | 15µA typ at 3.6V (enables >10-year battery life in always-on monitoring nodes) |
| Operating Temp | -40°C to +125°C (qualified for under-hood automotive and industrial control environments) |
| Reset Valid Down To | VCC1 or VCC2 ≥ 0.8V (guarantees clean reset assertion during deep brownout) |
| Output Type | Push-pull active-low RST (eliminates external pullup, drives directly into μP reset pin) |
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/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR low; holds for 280ms min after recovery |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output drivers; must be low-impedance connection |
| 3 - MR | Active-low manual-reset input | Internal 50kΩ pullup to VCC1; logic-low pulse ≥1µs forces reset; debounced internally, no external RC needed |
| 4 - VCC2 | Secondary supply input | Powers internal VCC2 comparator and sets 3.00V threshold; must be ≥0.8V for valid reset operation |
| 5 - VCC1 | Primary supply input | Powers device core and sets 4.50V threshold; supplies RST output driver; must be ≥0.8V for valid reset |
| 6 - NC | No connect | Unused pin; must be left floating or tied to GND per layout best practice; not bonded internally |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Simultaneous supervision of 4.5V primary and 3.0V secondary rails with separate comparators and hysteresis |
| Guaranteed reset validity at 0.8V | Ensures deterministic reset assertion even during severe brownout-no undefined output state |
| Low 15µA quiescent current | Minimizes standby power in battery-critical applications such as remote sensors and portable test equipment |
| Integrated MR pullup | Eliminates external resistor; simplifies BOM and PCB layout while ensuring robust manual-reset default state |
| Immunity to short VCC transients | Rejects <20µs glitches below threshold-prevents spurious resets in noisy power environments |
Applications
| Telecom Power Management | Industrial PLC Controller |
|---|---|
|
Use Scenario: Monitoring redundant 48V-to-3.3V DC-DC outputs and 5V backplane rails in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting system reset if either 4.5V logic rail or 3.0V I/O rail drops below spec during hot-swap events. Use Value: Prevents firmware corruption by guaranteeing 280ms reset hold time-longer than worst-case FPGA configuration time. |
Use Scenario: Ensuring safe startup and fault recovery in DIN-rail mounted programmable logic controllers with isolated 24V and 5V supplies. IC Role / Device Role / Timing Role: Primary/secondary supply monitor triggering hardware reset on undervoltage, synchronized with watchdog-disabled safety logic. Use Value: Valid reset down to 0.8V enables fail-safe behavior during brownout conditions common in factory floor power distribution. |
| Medical Diagnostic Equipment | Automotive ADAS Camera Module |
|
Use Scenario: Supervising dual-core processor supplies (1.2V core, 1.8V I/O) and auxiliary 3.3V sensor interface rail in portable ultrasound units. IC Role / Device Role / Timing Role: Dual-threshold supervisor providing coordinated reset across heterogeneous voltage domains during battery discharge cycles. Use Value: Factory-trimmed 4.50V/3.00V thresholds eliminate calibration overhead and ensure compliance with IEC 62304 power-up timing requirements. |
Use Scenario: Monitoring 5V camera imaging chain and 3.3V SoC I/O supply in rear-view camera modules exposed to automotive temperature extremes. IC Role / Device Role / Timing Role: High-temp-rated (–40°C to +125°C) dual-supply supervisor enabling cold-cranking and engine-bay thermal resilience. Use Value: Push-pull RST output drives automotive-grade microcontroller reset pin directly-no external pullup required, reducing component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single-supply (3.3V only), 200ms timeout, open-drain RST, no MR input | Lacks VCC2 monitoring and manual-reset capability; requires external pullup | Select when only 3.3V rail supervision is needed and MR is implemented externally |
| ADM6702SRTZ-45ARTZ-RL | 4.5V VCC1 threshold, 200ms timeout, push-pull RST, MR input, but -40°C to +85°C only | Lower temperature rating limits use in extended industrial or automotive under-hood locations | Choose for cost-sensitive commercial applications where 125°C operation is unnecessary |
Compared with TPS3808G33DBVR and ADM6702SRTZ-45ARTZ-RL, MAX6722AUTSVD3+ uniquely delivers dual-rail monitoring (4.5V + 3.0V), 280ms timeout, and full AEC-Q100-aligned temperature range in one SOT23-6 package-enabling consolidation of two discrete supervisors into a single footprint.
Availability
MAX6722AUTSVD3+ is available at Aetrix Electronics and suitable for telecom power management, industrial PLC controllers, and automotive ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6722AUTSVD3+ 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 supervisory circuits optimized for multivoltage embedded systems where reliability, small size, and guaranteed reset behavior under brownout are critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6722AUTSVD3+?
The MAX6722AUTSVD3+ has factory-trimmed reset thresholds of 4.500V (±1.5%) for VCC1 and 3.000V (±1.5%) for VCC2, as defined by the "V" suffix in its ordering code. These values are guaranteed over the full -40°C to +125°C operating temperature range and do not require external adjustment.
Does the MAX6722AUTSVD3+ include a watchdog timer function?
No, the MAX6722AUTSVD3+ does not include a watchdog timer. Its ordering suffix "D3" indicates 280ms reset timeout only, and the device lacks WDI pin functionality. Watchdog capability is present only in variants with "W" or "WD" suffixes (e.g., MAX6723A–MAX6729A).
Can the MAX6722AUTSVD3+ monitor a third voltage rail?
No, the MAX6722AUTSVD3+ is a dual-supply supervisor only. It lacks RSTIN or PFI inputs-features found in variants like MAX6723A (RSTIN) or MAX6728A (PFI). The "V" suffix confirms fixed dual-threshold configuration without auxiliary monitoring capability.
What is the function of Pin 6 (NC) on the MAX6722AUTSVD3+ SOT23-6 package?
Pin 6 on the MAX6722AUTSVD3+ is a no-connect (NC) terminal-unbonded and electrically inactive. It must be left floating or tied to GND per PCB layout guidelines; connecting it to any signal or supply may cause unpredictable behavior due to internal package parasitics.
Is the MAX6722AUTSVD3+ compatible with 1.8V logic-level microcontrollers?
Yes, the MAX6722AUTSVD3+'s push-pull RST output is fully compatible with 1.8V µPs: its VOH is guaranteed ≥0.8 × VCC1 (≥3.6V when VCC1 = 4.5V), and VOL is ≤0.3V with 1.2mA sink-well within 1.8V logic-high/low thresholds. No level-shifting is required.
MAX6722AUTSVD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6722AUTSVD3+ FAQ
1.How can I place an order for MAX6722AUTSVD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722AUTSVD3+ 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+ reliable?
The price and inventory of MAX6722AUTSVD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722AUTSVD3+ is usually 5 days.
3.What payment methods are accepted for MAX6722AUTSVD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722AUTSVD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722AUTSVD3+?
MAX6722AUTSVD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722AUTSVD3+ 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+?
For technical support, including MAX6722AUTSVD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722AUTSVD3+ requirements.
6.How does Aetrix verify that MAX6722AUTSVD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6722AUTSVD3+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6722AUTSVD3+?
All MAX6722AUTSVD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722AUTSVD3+, 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+ part is unused and in its original packaging.
Return procedure for MAX6722AUTSVD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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