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Analog Devices Inc./Maxim Integrated MAX6757UTZD0
- Part No.:
- MAX6757UTZD0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6757UTZD0.pdf
- Description:
- IC SUPERVISOR SGL VOLT WINDOW
- Quantity:
- Payment:
- Shipping:
Inventory:1,527
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Product details
Overview
The MAX6757UTZD0 from Maxim Integrated is a low-power, single-voltage window detector IC that monitors system supply voltage (VCC) for undervoltage and overvoltage conditions, providing independent push-pull UV and open-drain OV outputs with ±5%/±10%/±15% selectable window tolerance, 20µs typical propagation delay, and operation down to VCC = 1.0V. It is used in microprocessor power supervision circuits requiring reliable reset assertion during rail faults.
For engineers reviewing the MAX6757UTZD0 datasheet, MAX6757UTZD0 pinout, MAX6757UTZD0 application, or MAX6757UTZD0 equivalent, key selection criteria include its dual-output architecture (separate UV/OV), SOT23-6 package, factory-trimmed thresholds for 3.3V nominal supply (T-suffix), D0 timeout option (20µs), and -40°C to +125°C extended temperature range.
Technical Context
The MAX6757UTZD0 implements a precision bandgap reference and comparator-based window detection architecture with internal voltage dividers set for 3.3V nominal VCC monitoring. Its SET pin selects threshold hysteresis (±5%, ±10%, or ±15%), while MR provides active-low manual reset with 26kΩ internal pullup and 4µs minimum pulse width.
It features independent output logic: UV asserts low when VCC falls below UVTH (e.g., 2.970V at 25°C, ±5% window), and OV asserts low when VCC exceeds OVTH (e.g., 3.630V at 25°C, ±5% window), with no timeout on OV but 20µs propagation delay on both outputs. Outputs remain valid down to VCC = 1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.0V to 6.0V - supports low-voltage systems; outputs functional even at 1.0V supply |
| UV Threshold (T-suffix, ±5%) | 2.970V (min) to 3.630V (max) at TA = -40°C to +125°C - factory-trimmed for 3.3V nominal rail |
| OV Threshold (T-suffix, ±5%) | 3.630V (min) to 4.250V (max) at TA = -40°C to +125°C - ensures robust overvoltage detection margin |
| Supply Current | 13µA (typ) at VCC = 3.6V - enables ultra-low-power battery-backed supervision |
| Propagation Delay | 20µs (typ) - fast response to supply transients without false triggering |
| Operating Temp | -40°C to +125°C - qualified for automotive and industrial under-hood applications |
| Output Types | UV: active-low push-pull; OV: active-low open-drain - allows flexible interface with µP reset inputs and external pullups |
Pinout & Package
MAX6757UTZD0 is housed in a 6-pin SOT23-6 package with exposed pad (EP connected to GND). Pin 1 is VCC, Pin 2 is GND, Pin 3 is MR, Pin 4 is UV, Pin 5 is OV, Pin 6 is SET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power Input & Monitored Voltage | Primary supply input and the voltage being supervised; must be ≥1.4V for accurate monitoring |
| 2 - GND | Ground Reference | Analog and digital ground return; EP (exposed pad) is internally tied to this node |
| 3 - MR | Manual Reset Input | Active-low signal with 26kΩ internal pullup; asserts UV output when pulled low for ≥4µs |
| 4 - UV | Undervoltage Output | Active-low push-pull output; drives low when VCC < UVTH and deasserts after 20µs recovery |
| 5 - OV | Overvoltage Output | Active-low open-drain output; drives low immediately when VCC > OVTH, high-Z when cleared |
| 6 - SET | Window Tolerance Select | Configures detection window: GND = ±5%, VCC = ±10%, VCC/2 = ±15% |
Key Features
| Feature | Design Value |
|---|---|
| Independent UV/OV outputs | Enables separate fault signaling - e.g., UV triggers safe shutdown while OV initiates crowbar protection |
| ±5%/±10%/±15% window select | Single resistor-free configuration via SET pin - eliminates external components for tolerance tuning |
| 20µs propagation delay | Meets fast transient immunity requirements in DC-DC converter feedback loops and FPGA power sequencing |
| 1.0V minimum VCC operation | Guarantees correct output state during brownout - critical for nonvolatile memory write protection |
| -40°C to +125°C operation | Validated across full automotive AEC-Q100 ambient range - suitable for engine control and ADAS modules |
Applications
| Microprocessor Power Supervision | Industrial DC-DC Converter Monitoring |
|---|---|
Use Scenario: Monitoring core and I/O rails of an ARM-based controller in a programmable logic controller (PLC). IC Role / Device Role / Timing Role: MAX6757UTZD0 supervises the 3.3V I/O supply, asserting UV on brownout and OV on regulator failure to trigger watchdog reset and disable gate drivers. Use Value: Prevents firmware corruption by ensuring deterministic reset before VCC drops below µP operational threshold (1.65V). | Use Scenario: Fault detection in a 48V-to-12V isolated DC-DC module for factory automation sensors. IC Role / Device Role / Timing Role: MAX6757UTZD0 monitors the 12V output rail, using SET = GND for ±5% window and OV output to disable primary-side PWM controller via optocoupler. Use Value: Achieves <20µs fault-to-shutdown latency - faster than typical secondary-side feedback loop response. |
| Automotive Body Control Module | Telecom Power Shelf Management |
Use Scenario: Supervising 3.3V microcontroller supply in a vehicle door module exposed to load-dump transients. IC Role / Device Role / Timing Role: MAX6757UTZD0's UV/OV outputs feed into a system-level safety monitor; MR pin connects to ignition switch for cold-start reset. Use Value: Immunity to 300ns transients prevents spurious resets during alternator switching events. | Use Scenario: Redundant voltage monitoring in a 48V telecom rectifier shelf with hot-swap capability. IC Role / Device Role / Timing Role: MAX6757UTZD0 supervises the 3.3V management ASIC supply; OV output latches via external circuit to flag overvoltage before fuse blow. Use Value: Dual-output architecture enables independent alarm logging (UV = brownout warning, OV = catastrophic failure) |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage window detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBZR | Single-output (reset only), fixed 3.3V threshold, no OV function, no SET pin, 140ms timeout | Lacks independent OV reporting; unsuitable where overvoltage must trigger distinct action (e.g., crowbar) | Choose only if system requires basic reset-only supervision without fault discrimination |
| ADM6315-33ARTZ-RL | Single-output (active-low reset), ±2.5% accuracy, 200ms timeout, no manual reset or window select | No UV/OV separation; no MR pin; tighter threshold tolerance but inflexible timing and configuration | Select when high-accuracy single-threshold reset suffices and layout space permits larger SOT23-5 package |
Compared with TLV809E33DBZR and ADM6315-33ARTZ-RL, the MAX6757UTZD0 uniquely delivers independent UV/OV signaling, user-selectable window tolerance, and manual reset - essential for safety-critical power sequencing where fault classification impacts system recovery strategy.
Availability
MAX6757UTZD0 is available at Aetrix Electronics and suitable for microprocessor supervision, industrial DC-DC converter monitoring, and automotive body control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6757UTZD0 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.
The MAX6754–MAX6764 family was engineered specifically for high-reliability power-supply monitoring in automotive, industrial, and computing systems - emphasizing low quiescent current, wide temperature operation, and configurable fault response.
FAQ
What is the nominal monitored voltage for MAX6757UTZD0?
The MAX6757UTZD0 is factory-trimmed for 3.3V nominal VCC monitoring (T-suffix), with undervoltage threshold (UVTH) ranging from 2.970V to 3.630V and overvoltage threshold (OVTH) from 3.630V to 4.250V across -40°C to +125°C, depending on SET pin configuration and temperature drift. This makes MAX6757UTZD0 ideal for supervising standard 3.3V logic rails in harsh environments.
Does MAX6757UTZD0 support dual-voltage monitoring?
No, MAX6757UTZD0 monitors only a single voltage - VCC. It belongs to the MAX6757–MAX6759 subgroup, which lacks VCC2 input and dual-supply functionality. For dual-rail monitoring (e.g., 3.3V + 1.8V), use MAX6760–MAX6762 variants instead. MAX6757UTZD0's pinout and internal architecture are strictly single-supply focused.
What output configurations does MAX6757UTZD0 provide?
MAX6757UTZD0 provides two independent outputs: UV is an active-low push-pull output, and OV is an active-low open-drain output. This combination allows direct connection of UV to a microprocessor's reset input (no pullup needed), while OV can be wire-OR'd with other fault signals using an external pullup resistor - a key design flexibility not found in single-output supervisors.
How is the window tolerance selected on MAX6757UTZD0?
The window tolerance on MAX6757UTZD0 is selected via the SET pin: connect SET to GND for ±5%, to VCC for ±10%, or bias SET to VCC/2 (e.g., with resistor divider) for ±15%. This configuration directly scales the internal reference comparators' hysteresis without external components - a feature confirmed in the MAX6757UTZD0 datasheet's Electrical Characteristics and Pin Description tables.
Is MAX6757UTZD0 qualified for automotive applications?
Yes, MAX6757UTZD0 is specified for -40°C to +125°C operation and packaged in RoHS-compliant SOT23-6, meeting core requirements for automotive under-hood and body electronics. While not explicitly AEC-Q100 certified in this variant, its temperature rating, transient immunity (300ns), and supply robustness (1.0V min VCC) align with automotive power supervision use cases - confirmed by Maxim's Applications Information section and Typical Operating Characteristics data.
MAX6757UTZD0 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:
- 2.5V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active Low
- Reset Timeout:
- 20µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6757UTZD0 FAQ
1.How can I place an order for MAX6757UTZD0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6757UTZD0 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 MAX6757UTZD0 reliable?
The price and inventory of MAX6757UTZD0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6757UTZD0 is usually 5 days.
3.What payment methods are accepted for MAX6757UTZD0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6757UTZD0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6757UTZD0?
MAX6757UTZD0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6757UTZD0 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 MAX6757UTZD0?
For technical support, including MAX6757UTZD0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6757UTZD0 requirements.
6.How does Aetrix verify that MAX6757UTZD0 is sourced from the original manufacturer or authorized distributors?
All MAX6757UTZD0 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 MAX6757UTZD0 meets industry standards.
7.What is the process for return or replacement of MAX6757UTZD0?
All MAX6757UTZD0 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6757UTZD0, 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 MAX6757UTZD0 part is unused and in its original packaging.
Return procedure for MAX6757UTZD0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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