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Analog Devices Inc./Maxim Integrated MAX6759UTWD3+
- Part No.:
- MAX6759UTWD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6759UTWD3+.pdf
- Description:
- MAX6759 LOW-POWER, SINGLE-VOLTAG
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
MAX6759UTWD3+ from Maxim Integrated is a single-voltage, low-power window detector IC that monitors system supply voltage (VCC) for undervoltage and overvoltage conditions with factory-trimmed thresholds at 3.3V nominal, ±10% window (SET = VCC), and 100ms minimum reset timeout. It features independent open-drain UV and OV outputs, manual reset input (MR), and operates from -40°C to +125°C in SOT23-6 package - used in telecom power supervision and industrial microprocessor reset management.
For engineers reviewing the MAX6759UTWD3+ datasheet, MAX6759UTWD3+ pinout, MAX6759UTWD3+ application, or MAX6759UTWD3+ equivalent, key selection criteria include its 3.3V ±10% window detection, 100ms D3 timeout, open-drain output configuration, MR-controlled reset assertion, and automotive-grade temperature range.
Technical Context
The MAX6759UTWD3+ implements dual internal comparators with precision bandgap reference to detect VCC falling below UVTH (≈2.97V) or rising above OVTH (≈3.63V) at TA = -40°C to +125°C. Its SET pin is tied to VCC to configure ±10% window hysteresis (0.7% typical threshold hysteresis), and it uses a 26kΩ internal MR pullup for manual reset initiation.
It delivers independent UV and OV outputs without shared timing logic: UV asserts on VCC < UVTH with 100ms timeout deassertion; OV asserts immediately on VCC > OVTH with no timeout and high-impedance release upon return to valid range - enabling fast fault response and clean power sequencing in DC-DC converter modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0V to 6.0V - ensures valid operation down to brownout conditions while supporting up to 5V systems |
| UV Threshold (VCC = 3.3V) | 2.970V to 3.053V (falling) - guarantees reliable reset assertion before microprocessor malfunction |
| OV Threshold (VCC = 3.3V) | 3.630V to 3.713V (rising) - prevents overvoltage damage to 3.3V I/O rails |
| Reset Timeout | 100ms min (D3 option) - meets JEDEC JESD74A power-on reset hold time requirements |
| Supply Current | 13µA typ at 3.6V - enables always-on monitoring in battery-backed systems |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Output Type | Open-drain UV and OV - allows wired-OR logic, level shifting, and flexible pullup voltage selection |
Pinout & Package
Package: 6-pin SOT23-6, lead-free (RoHS-compliant), exposed pad not connected (not internally tied to GND per datasheet).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power Input & Monitored Supply | Primary supply rail monitored for window violation; powers internal circuitry |
| 2 - GND | Ground Reference | Common return path for all analog and digital functions; must be low-impedance |
| 3 - MR | Active-Low Manual Reset Input | Asserts UV output when pulled low; internally pulled up to VCC via 26kΩ resistor |
| 4 - SET | Window Threshold Select | Tied to VCC to select ±10% window; determines UVTH/OVTH spacing around 3.3V |
| 5 - UV | Undervoltage Output | Open-drain active-low signal asserting when VCC < UVTH; deasserts after 100ms timeout |
| 6 - OV | Overvoltage Output | Open-drain active-low signal asserting when VCC > OVTH; releases immediately upon return to valid range |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed 3.3V Threshold | Eliminates external resistor networks and calibration effort for standard 3.3V rail monitoring |
| ±10% Window Select (SET = VCC) | Provides precise 2.97V–3.63V detection range without trimming components or layout changes |
| Independent UV/OV Outputs | Enables separate fault handling - e.g., UV triggers processor reset while OV disables power stage |
| 100ms Minimum Reset Timeout (D3) | Guarantees sufficient hold time for microcontroller initialization across voltage ramp rates |
| Low 13µA Supply Current | Reduces quiescent load on backup supplies in always-on supervisory circuits |
Applications
| Telecom Power Supervision | Industrial Microprocessor Reset |
|---|---|
Use Scenario: Monitoring 3.3V bias rail in optical line terminal (OLT) power module during hot-swap events and transient surges. IC Role / Device Role / Timing Role: Window detector asserting UV on brownout and OV on surge, with immediate OV release and 100ms UV hold for safe firmware recovery. Use Value: Prevents data corruption during AC line disturbances by ensuring processor remains held in reset until stable 3.3V is restored. | Use Scenario: Supervising main 3.3V supply in programmable logic controller (PLC) CPU board with manual reset button. IC Role / Device Role / Timing Role: Dual-output supervisor providing independent fault signals: UV drives processor RESET#; OV triggers power-stage disable latch. Use Value: Enables differentiated response to under- vs. overvoltage faults - critical for fail-safe shutdown in safety-critical automation. |
| Automotive Body Control Module | DC-DC Converter Sequencing |
Use Scenario: Monitoring 3.3V domain in body ECU exposed to load-dump and cold-crank conditions (-40°C to +125°C). IC Role / Device Role / Timing Role: Automotive-grade window detector with MR input for service-mode reset; open-drain outputs interface directly to 5V CAN transceiver enable lines. Use Value: Meets AEC-Q100 Grade 1 requirements and eliminates need for external level shifters in mixed-voltage domains. | Use Scenario: Coordinating startup of dual-output buck converter where 3.3V must stabilize before enabling 1.2V core rail. IC Role / Device Role / Timing Role: UV output enables downstream regulator only after 100ms stable 3.3V; OV output disables converter if overshoot exceeds 3.63V. Use Value: Ensures strict power-up sequencing and prevents core logic damage from premature 1.2V activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBZR | Single open-drain reset output only (no independent OV); ±2% accuracy; no SET pin for window adjustment | Lacks independent overvoltage reporting - unsuitable where OV fault isolation is required | Select when only basic undervoltage reset is needed and tighter UV threshold tolerance is prioritized |
| TPS3808G33DBVR | Single push-pull reset output; adjustable delay (1ms–10s); no OV output; higher ICC (2.5µA vs. 13µA) | No overvoltage detection capability; requires external comparator for OV monitoring | Choose for ultra-low-power reset-only applications where programmable timeout outweighs need for OV signaling |
Compared with TLV809E33DBZR and TPS3808G33DBVR, the MAX6759UTWD3+ uniquely provides factory-set 3.3V window detection with independent open-drain UV and OV outputs in one SOT23-6 package - enabling compact, dual-fault-aware power supervision without external components.
Availability
MAX6759UTWD3+ is available at Aetrix Electronics and suitable for telecom power supervision, industrial microprocessor reset, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6759UTWD3+ 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 management, sensing, and interface applications in demanding environments.
The MAX6754–MAX6764 family was developed to deliver highly accurate, low-power voltage supervision for microprocessor-based systems where simultaneous undervoltage and overvoltage fault detection is essential for functional safety and reliability.
FAQ
What is the exact undervoltage and overvoltage threshold range for MAX6759UTWD3+ at 25°C?
The MAX6759UTWD3+ has a nominal 3.3V supply monitoring point with ±10% window (SET = VCC). At +25°C, its undervoltage threshold (UVTH) falls between 2.970V and 3.053V on VCC falling edge, and its overvoltage threshold (OVTH) rises between 3.630V and 3.713V on VCC rising edge. These values are factory-trimmed and guaranteed over -40°C to +125°C.
Does MAX6759UTWD3+ support manual reset functionality, and how is it implemented?
Yes, MAX6759UTWD3+ includes an active-low manual reset input (MR) on Pin 3. Driving MR low asserts the UV output immediately. The UV output remains asserted for the full 100ms timeout period after MR returns high. MR is internally pulled up to VCC via a 26kΩ resistor, eliminating the need for an external pullup in most designs.
What output configuration does MAX6759UTWD3+ use, and why does it matter for system design?
MAX6759UTWD3+ uses open-drain UV and OV outputs. This allows wired-OR connection of multiple supervisors, level translation across different voltage domains (e.g., interfacing with 5V logic), and flexible pullup selection (e.g., to 3.3V, 5V, or VBAT). It also prevents bus contention in multi-supervisor systems and simplifies fault-signaling integration.
Can MAX6759UTWD3+ monitor voltages other than 3.3V?
No - MAX6759UTWD3+ is factory-trimmed exclusively for 3.3V nominal monitoring (suffix "T"). It does not support adjustable thresholds like the MAX6763/MAX6764. For other voltages, select variants such as MAX6757ULWD3+ (5V), MAX6759URWD3+ (3.0V), or MAX6764UT-T (externally adjustable down to 0.5V).
Is MAX6759UTWD3+ qualified for automotive applications?
Yes - MAX6759UTWD3+ is specified for -40°C to +125°C operation and packaged in RoHS-compliant lead-free SOT23-6. While not explicitly AEC-Q200 certified in this variant, its temperature range, robust transient immunity (300ns), and 125°C junction rating make it suitable for under-hood and body-control applications where full qualification is not mandated.
MAX6759UTWD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.8V
- Output:
- Open Drain, Open Drain
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6759UTWD3+ FAQ
1.How can I place an order for MAX6759UTWD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6759UTWD3+ 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 MAX6759UTWD3+ reliable?
The price and inventory of MAX6759UTWD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6759UTWD3+ is usually 5 days.
3.What payment methods are accepted for MAX6759UTWD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6759UTWD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6759UTWD3+?
MAX6759UTWD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6759UTWD3+ 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 MAX6759UTWD3+?
For technical support, including MAX6759UTWD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6759UTWD3+ requirements.
6.How does Aetrix verify that MAX6759UTWD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6759UTWD3+ 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 MAX6759UTWD3+ meets industry standards.
7.What is the process for return or replacement of MAX6759UTWD3+?
All MAX6759UTWD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6759UTWD3+, 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 MAX6759UTWD3+ part is unused and in its original packaging.
Return procedure for MAX6759UTWD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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