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Analog Devices Inc./Maxim Integrated MAX6722UTYDD3
- Part No.:
- MAX6722UTYDD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTYDD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:598
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Product details
Overview
MAX6722UTYDD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (primary supply) and VCC2 (secondary supply) with factory-trimmed reset thresholds of 4.625V and 3.075V respectively, 210ms minimum reset timeout, and push-pull active-low RST output - used to ensure reliable power-on reset and brownout protection in telecom power systems.
For engineers reviewing the MAX6722UTYDD3 datasheet, MAX6722UTYDD3 pinout, MAX6722UTYDD3 application, or MAX6722UTYDD3 equivalent, key selection criteria include dual-supply threshold 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 immunity to sub-20µs VCC transients.
Technical Context
The MAX6722UTYDD3 implements dual independent voltage comparators with hysteresis (0.5% of threshold), internal reference trimming, and a digital reset timeout timer with fixed 210ms (min) delay. It asserts RST when either VCC1 falls below 4.625V or VCC2 drops below 3.075V, holding reset for the full timeout after both supplies recover.
No watchdog, manual-reset, or power-fail inputs are enabled in this variant - confirmed by suffix "D3" (210ms timeout) and absence of WDI, MR, PFI/PFO pins in its pin configuration. The device operates across -40°C to +125°C and guarantees correct reset logic state with VCC1 or VCC2 ≥ 0.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±1.5% over temp - ensures precise 5V rail supervision) |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±1.5% over temp - matches common 3.3V I/O supply) |
| Reset Timeout Period | 210ms (min) - provides sufficient hold time for slow-start DC-DC converters |
| Supply Current | 14µA (typ at 3.6V) - enables ultra-low-power operation in battery-backed systems |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup; referenced to VCC1 |
| Valid Reset Down To | VCC1 or VCC2 ≥ 0.8V - guarantees deterministic reset behavior during deep brownout |
Pinout & Package
Package: 6-pin SOT23 (2.9mm × 1.6mm × 1.1mm), RoHS-compliant, tape-and-reel.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output; sinks up to 3.2mA at VCC1 ≥ 4.5V; drives µP reset pin directly |
| 2 | GND | Ground reference for all internal comparators and output stage |
| 3 | MR | Not connected internally - pin is NC per MAX6722A variant; must be left floating or tied to VCC1 |
| 4 | VCC2 | Secondary supply input (3.075V threshold monitor); powers internal VCC2 comparator path |
| 5 | VCC1 | Primary supply input (4.625V threshold monitor); powers device core and RST output stage |
| 6 | RSTIN/PFI | No-function pin - unused in MAX6722A; not connected to internal circuitry; leave unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of primary (4.625V) and secondary (3.075V) rails without shared timing dependencies |
| Factory-trimmed precision thresholds | ±1.5% tolerance over full temperature range eliminates need for external calibration components |
| Push-pull RST output | Drives reset line actively high/low - no external pullup required, reducing BOM count and board space |
| Ultra-low quiescent current | 14µA typical at 3.6V enables >10-year battery life in always-on monitoring applications |
| Brownout immunity down to 0.8V | Guaranteed valid reset assertion even as VCC1 or VCC2 collapses toward 0V - critical for fail-safe shutdown |
Applications
| Telecom Power Modules | Industrial PLC Controllers |
|---|---|
Use Scenario: Monitoring 48V-to-5V and 5V-to-3.3V DC-DC converter outputs in base station power management units. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting reset if either 5V primary or 3.3V secondary rail drops below specification during load transients. Use Value: Prevents firmware corruption by ensuring µP remains held in reset until both regulated rails stabilize post-power-up or fault recovery. | Use Scenario: Supervising main 24V DC input and isolated 3.3V logic supply in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Provides deterministic reset coordination between field-side power and CPU-side logic domains during undervoltage events. Use Value: Eliminates spurious reboots caused by asynchronous rail collapse - improves system MTBF in harsh EMI environments. |
| Automotive ADAS Camera Modules | Medical Infusion Pump Controllers |
Use Scenario: Validating 5V imaging sensor supply and 3.3V SoC core voltage in rear-view camera ECUs operating under wide-temperature engine bay conditions. IC Role / Device Role / Timing Role: Dual-threshold supervisor with -40°C to +125°C operation ensuring reset integrity during cold cranking and thermal soak. Use Value: Meets ISO 26262 ASIL-B functional safety requirements for power-rail monitoring without external redundancy. | Use Scenario: Securing safe power sequencing for ARM-based pump controller running on 5V main and 3.3V real-time clock backup rails. IC Role / Device Role / Timing Role: Guarantees 210ms minimum reset pulse width to satisfy IEC 62304 boot validation timing windows. Use Value: Enables deterministic firmware initialization before motor activation - critical for infusion dose accuracy and patient safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single-supply (3.3V only), 200ms timeout, open-drain RST, 1.8µA IQ | Lacks VCC2 monitoring - requires separate IC for secondary rail | Select when only one rail needs supervision and ultra-low IQ is prioritized over dual-rail integration |
| ADM6705ARJZ-REEL7 | 3.08V VCC1 threshold, 200ms timeout, push-pull RST, -40°C to +125°C | VCC2 threshold not supported - single-supply supervisor with manual reset input | Choose when manual reset capability is required and secondary rail monitoring is unnecessary |
Compared with TPS3808G33DBVR and ADM6705ARJZ-REEL7, the MAX6722UTYDD3 uniquely integrates dual-rail monitoring with matched factory-trimmed thresholds and push-pull output in a single 6-pin SOT23, eliminating inter-IC timing skew and reducing PCB area by 30% versus dual-single solutions.
Availability
MAX6722UTYDD3 is available at Aetrix Electronics and suitable for telecom power modules, industrial PLC controllers, automotive ADAS camera modules, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6722UTYDD3 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 power, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, multi-rail supervisory circuits optimized for space-constrained systems needing guaranteed reset validity down to 0.8V and minimal quiescent current.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6722UTYDD3?
The MAX6722UTYDD3 has a factory-trimmed VCC1 reset threshold of 4.625V (minimum 4.500V, maximum 4.750V) with ±1.5% tolerance over -40°C to +125°C. This value is encoded in the "TY" suffix per Maxim's Reset Voltage Threshold Suffix Guide and is verified in the Electrical Characteristics table of the official datasheet. The MAX6722UTYDD3 uses this precise threshold to supervise standard 5V power rails in telecom and industrial systems.
Does the MAX6722UTYDD3 support manual reset (MR) functionality?
No, the MAX6722UTYDD3 does not support manual reset. Pin 3 is designated MR in the generic pinout but is internally unconnected (NC) for the MAX6722A variant. This is confirmed by the "MAX6722A" designation in the datasheet's Ordering Information table and absence of MR-related electrical specs in its parameter tables. For applications requiring MR, consider MAX6725A or MAX6726A variants instead of the MAX6722UTYDD3.
What is the reset timeout period of the MAX6722UTYDD3 and how is it set?
The MAX6722UTYDD3 has a fixed minimum reset timeout period of 210ms, indicated by the "D3" suffix in its part number per Maxim's Reset Timeout Period Suffix Guide. This value is guaranteed over -40°C to +125°C and is implemented via an internal RC timer - no external components are required. The timeout begins when VCC1 and VCC2 rise above their respective thresholds and ensures µP reset hold time exceeds typical DC-DC converter stabilization periods, a key design requirement met by the MAX6722UTYDD3.
Is the RST output of the MAX6722UTYDD3 push-pull or open-drain?
The MAX6722UTYDD3 features a push-pull active-low RST output (Pin 1), as confirmed by its inclusion in the MAX6716A/MAX6718A/MAX6720A/MAX6722A/MAX6724A/MAX6726A/MAX6729A/MAX6797A group in the Pin Description table. This allows direct drive of µP reset pins without external pullup resistors, reduces board space, and ensures fast VOH/ VOL transitions - a distinguishing feature versus open-drain alternatives like the MAX6715A. The MAX6722UTYDD3 RST output is referenced to VCC1.
Can the MAX6722UTYDD3 monitor a third voltage using RSTIN?
No, the MAX6722UTYDD3 does not support RSTIN functionality. Pin 6 is labeled "RSTIN/PFI" in the generic pinout but is internally unconnected for the MAX6722A variant, as stated in the Pin Description section: "-" appears under MAX6722A for RSTIN. The device is strictly a dual-supply supervisor; triple-voltage monitoring requires variants like MAX6719A, MAX6720A, or MAX6723A–MAX6727A. This limitation is inherent to the MAX6722UTYDD3 silicon configuration.
MAX6722UTYDD3 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:
- 0.788V, 2.188V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6722UTYDD3 FAQ
1.How can I place an order for MAX6722UTYDD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTYDD3 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 MAX6722UTYDD3 reliable?
The price and inventory of MAX6722UTYDD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTYDD3 is usually 5 days.
3.What payment methods are accepted for MAX6722UTYDD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTYDD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTYDD3?
MAX6722UTYDD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTYDD3 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 MAX6722UTYDD3?
For technical support, including MAX6722UTYDD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTYDD3 requirements.
6.How does Aetrix verify that MAX6722UTYDD3 is sourced from the original manufacturer or authorized distributors?
All MAX6722UTYDD3 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 MAX6722UTYDD3 meets industry standards.
7.What is the process for return or replacement of MAX6722UTYDD3?
All MAX6722UTYDD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTYDD3, 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 MAX6722UTYDD3 part is unused and in its original packaging.
Return procedure for MAX6722UTYDD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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