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Analog Devices Inc./Maxim Integrated MAX6756UKWD3+T
- Part No.:
- MAX6756UKWD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6756UKWD3+T.pdf
- Description:
- IC DETECT VOLT WINDOW SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,305
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Product details
Overview
The MAX6756UKWD3+T from Analog Devices is a low-power, single-supply window voltage detector with factory-trimmed 1.8V nominal monitoring, ±15% adjustable window (1.53V UV / 2.07V OV), 100ms minimum reset timeout, active-low open-drain RESET output, and manual reset input. It operates from 1.0V to 6.0V supply and is used in DC-DC converter modules and microprocessor power supervision where precise undervoltage/overvoltage detection with latch-free reset recovery is required.
For engineers reviewing the MAX6756UKWD3+T datasheet, MAX6756UKWD3+T pinout, MAX6756UKWD3+T application, or MAX6756UKWD3+T equivalent, key selection criteria include its 1.8V fixed threshold with ±15% window select via SET pin, 100ms timeout period, open-drain RESET output compatible with 1.8V–5V logic, -40°C to +125°C operation, and SOT23-5 package footprint.
Technical Context
The MAX6756UKWD3+T implements a precision bandgap reference and comparator-based window detection architecture with internal voltage dividers set for 1.8V nominal VCC monitoring. Its SET pin configures hysteresis at ±5%, ±10%, or ±15% - with the 'W' suffix indicating 1.8V nominal and 'D3' specifying 100ms minimum timeout.
It features a manual reset (MR) input with 4µs minimum pulse width and 300ns propagation delay, and guarantees valid outputs down to VCC = 1.0V. The open-drain RESET output supports pull-up to any voltage ≤ VCC + 0.3V and sinks up to 4.0mA at VCC ≥ 4.75V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal VCC Threshold | 1.8V - factory-trimmed for 1.8V system rail monitoring (suffix 'W') |
| Window Select | ±15% - achieved by biasing SET pin to VCC/2; yields UVTH = 1.53V, OVTH = 2.07V at TA = +25°C |
| Reset Timeout | 100ms min - ensures stable microprocessor reset hold time after brownout recovery (suffix 'D3') |
| Supply Current | 13µA typ at VCC = 3.6V - enables battery-backed or ultra-low-power applications |
| Operating Temp | -40°C to +125°C - qualified for automotive under-hood and industrial embedded use |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration and level-shifting with external pull-up |
| Manual Reset | Active-low MR with 26kΩ internal pull-up - provides hardware-initiated reset independent of supply condition |
Pinout & Package
MAX6756UKWD3+T is housed in a 5-pin SOT23-5 package (package code U5+1A, outline 21-0057), with exposed pad not present. Pin 1 is VCC, Pin 2 is GND, Pin 3 is MR, Pin 4 is RESET, and Pin 5 is SET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power Input & Monitored Voltage | Supplies device and serves as the 1.8V nominal monitored rail; requires RC filter (100Ω + 0.1µF) for transient immunity |
| 2 - GND | Ground Reference | Common return for internal reference, comparators, and output drivers |
| 3 - MR | Active-Low Manual Reset | Asserts RESET output when pulled low; internally pulled up to VCC via 26kΩ resistor |
| 4 - RESET | Open-Drain Output | Active-low reset signal; must be externally pulled up; sinks 100µA at VCC ≥ 1.0V |
| 5 - SET | Window Threshold Select | Bias to VCC/2 for ±15% window; bias to GND or VCC for ±5% or ±10% respectively |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed 1.8V Monitoring | Eliminates external resistor networks for 1.8V rail supervision; reduces BOM count and layout area |
| Configurable ±15% Window | Enables robust detection margin against ripple and tolerance stack-up on 1.8V supplies |
| 100ms Minimum Timeout | Guarantees sufficient reset assertion time for slow-ramping 1.8V domains after power-up or brownout |
| Open-Drain RESET Output | Supports mixed-voltage systems (e.g., 1.8V detector driving 3.3V µP reset) via external pull-up |
| Manual Reset Input with Internal Pull-Up | Reduces external component count; enables push-button reset without external resistor |
Applications
| Microprocessor Power Supervision | DC-DC Converter Module Monitoring |
|---|---|
Use Scenario: Monitoring 1.8V core supply of an ARM Cortex-M7 microcontroller during startup, brownout, and thermal shutdown events. IC Role / Device Role / Timing Role: Window detector asserting open-drain RESET to hold processor in reset until 1.8V stabilizes within ±15% window and remains valid for ≥100ms. Use Value: Prevents illegal instruction execution and flash corruption by enforcing strict 1.8V rail validity before release from reset. | Use Scenario: Supervising output voltage of a 1.8V synchronous buck converter powering FPGA I/O banks. IC Role / Device Role / Timing Role: Detecting overvoltage (>2.07V) or undervoltage (<1.53V) on converter output and asserting RESET to disable downstream logic. Use Value: Enables immediate fault containment without software intervention; 100ms timeout prevents nuisance trips from switching noise. |
| Automotive Body Control Module | Industrial Sensor Node Power Management |
Use Scenario: Monitoring 1.8V supply to CAN transceiver and LIN interface ICs in a vehicle body control unit operating at -40°C to +125°C. IC Role / Device Role / Timing Role: Providing AEC-Q100-compliant (via /V variant family) undervoltage/overvoltage detection with guaranteed operation across full automotive temperature range. Use Value: Ensures deterministic reset behavior during cold-crank and load-dump conditions where 1.8V rail may dip or surge. | Use Scenario: Supervising 1.8V rail generated by low-quiescent LDO for ultra-low-power wireless sensor node MCU and RF transceiver. IC Role / Device Role / Timing Role: Enabling fail-safe shutdown via open-drain RESET tied to LDO enable pin when 1.8V falls below 1.53V. Use Value: Extends battery life by preventing operation outside safe voltage window; 13µA ICC minimizes quiescent drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6756UKWD0+T | 20µs typical propagation delay instead of 100ms timeout; no reset hold time | Suitable for fast-response systems needing immediate reset release (e.g., high-speed ADC power sequencing) | Select when timing-critical release from reset is required; avoid if brownout recovery stability is needed |
| TLV809E18DBZR | Single undervoltage detector only (no overvoltage); fixed 1.8V threshold; no SET pin or window adjust | Limited to UV-only monitoring; lacks OV fault detection capability of MAX6756UKWD3+T | Choose only if overvoltage protection is unnecessary and cost is primary constraint |
Compared with MAX6756UKWD0+T and TLV809E18DBZR, the MAX6756UKWD3+T uniquely delivers combined UV/OV window detection with user-configurable ±15% hysteresis and guaranteed 100ms reset hold - essential for reliable 1.8V system initialization and fault recovery.
Availability
MAX6756UKWD3+T is available at Aetrix Electronics and suitable for microprocessor power supervision, DC-DC converter module monitoring, automotive body control modules, and industrial sensor node power management requiring stable component supply across extended temperature ranges.
Supply support for MAX6756UKWD3+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX6754–MAX6764 family was designed specifically for robust, low-power system-level power supply monitoring - delivering precision window detection with configurable thresholds, manual reset, and wide-temperature operation in minimal footprints.
FAQ
What is the exact undervoltage and overvoltage threshold for MAX6756UKWD3+T at room temperature?
The MAX6756UKWD3+T has a factory-trimmed nominal VCC threshold of 1.8V. With SET biased to VCC/2 for ±15% window, its undervoltage threshold (UVTH) is 1.53V and overvoltage threshold (OVTH) is 2.07V at TA = +25°C. These values are specified across -40°C to +125°C with ±0.7% hysteresis and exhibit <±3% total variation over temperature per the datasheet's normalized plots.
Does MAX6756UKWD3+T support operation below 1.8V supply?
Yes, the MAX6756UKWD3+T operates with VCC as low as 1.0V, and its RESET output remains asserted in the correct logic state down to VCC = 1.0V. However, voltage monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2; below that, the detector stops updating but holds last-known state.
How is the 100ms timeout period implemented in MAX6756UKWD3+T?
The MAX6756UKWD3+T uses an internal RC timing circuit to generate a minimum 100ms reset timeout after VCC rises above UVTH or falls below OVTH. This is a guaranteed minimum value (100ms to 320ms max) - not a programmable timer - and ensures the RESET output remains asserted long enough for system stabilization before release.
Can the SET pin of MAX6756UKWD3+T be left floating?
No, the SET pin of MAX6756UKWD3+T must not be left floating. It must be actively biased to GND (for ±5%), VCC (for ±10%), or VCC/2 (for ±15%) using appropriate resistors or voltage dividers. Floating SET causes undefined window width and unreliable detection behavior due to input leakage and noise sensitivity.
What package type and footprint does MAX6756UKWD3+T use?
The MAX6756UKWD3+T uses a 5-pin SOT23-5 package (package code U5+1A, outline number 21-0057) with standard land pattern 90-0174. It has no exposed pad and is compatible with automated pick-and-place and reflow soldering processes used in high-volume PCB assembly.
MAX6756UKWD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- 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:
- -
MAX6756UKWD3+T FAQ
1.How can I place an order for MAX6756UKWD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6756UKWD3+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 MAX6756UKWD3+T reliable?
The price and inventory of MAX6756UKWD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6756UKWD3+T is usually 5 days.
3.What payment methods are accepted for MAX6756UKWD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6756UKWD3+T transactions.
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4.How is shipping managed for MAX6756UKWD3+T?
MAX6756UKWD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6756UKWD3+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 MAX6756UKWD3+T?
For technical support, including MAX6756UKWD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6756UKWD3+T requirements.
6.How does Aetrix verify that MAX6756UKWD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6756UKWD3+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 MAX6756UKWD3+T meets industry standards.
7.What is the process for return or replacement of MAX6756UKWD3+T?
All MAX6756UKWD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6756UKWD3+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 MAX6756UKWD3+T part is unused and in its original packaging.
Return procedure for MAX6756UKWD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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