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Analog Devices Inc./Maxim Integrated MAX6457UKD3C+T
- Part No.:
- MAX6457UKD3C+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6457UKD3C+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,011
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Product details
Overview
MAX6457UKD3C+T from Analog Devices is a single-channel, high-voltage undervoltage/overvoltage monitor IC with latched output, 8.3% internal threshold hysteresis, 150ms reset timeout, and open-drain 28V-compliant output. It operates from 4V to 28V supply, draws only 3.5µA typical at 12V, and functions across –40°C to +125°C for automotive battery-stack supervision and industrial power-rail monitoring.
For engineers reviewing the MAX6457UKD3C+T datasheet, MAX6457UKD3C+T pinout, MAX6457UKD3C+T application, or MAX6457UKD3C+T equivalent, this device delivers precise, noise-immune voltage detection in compact SOT23-5 packaging with factory-trimmed hysteresis and fixed long-duration timeout-critical for reliable overvoltage lockout in Li+-battery-powered equipment and telecom DC-DC converters.
Technical Context
The MAX6457UKD3C+T integrates a precision 2.25V ±2.5% bandgap reference, a low-offset comparator, and internal hysteresis (8.3% of VTH+) to eliminate external feedback components. Its CLEAR input enables latched operation: driving CLEAR high after VIN+ exceeds VTH+ holds OUT high until manually cleared, supporting fail-safe overvoltage event capture.
It features a fixed 150ms minimum reset timeout (D3 option), requiring the monitored voltage to remain above VTH+ for the full duration before deasserting OUT. The open-drain output sinks up to 10mA and supports pull-up voltages up to 28V-enabling direct interface with higher-voltage logic or MOSFET gate drivers without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4V to 28V - powers directly from unregulated battery stacks or industrial rails without pre-regulation. |
| Supply Current (typ) | 3.5µA at 12V - enables always-on monitoring in energy-constrained systems like e-readers and remote sensors. |
| Threshold Hysteresis | 8.3% of VTH+ - provides robust noise immunity for noisy automotive or industrial environments without external RC networks. |
| Timeout Period | 150ms minimum - prevents false resets during brief transients, suitable for overvoltage shutdown in DC-DC converter protection. |
| Output Type | Open-drain n-channel, 28V-compliant - allows flexible pull-up to any voltage ≤28V, enabling direct control of P-MOSFET gates or optocouplers. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial embedded applications with no derating. |
| Reference Voltage | 2.25V ±2.5% - stable internal reference eliminates need for external precision voltage source when setting trip thresholds. |
Pinout & Package
MAX6457UKD3C+T is housed in a RoHS-compliant, lead(Pb)-free 5-pin SOT23 package (package code U5+1, outline 21-0057), optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Open-drain monitor output | Asserts low on undervoltage (VIN+ < VTH−) or overvoltage (if latched); requires external pull-up; sinks up to 10mA. |
| 2 - GND | Ground reference | Common return for VCC, IN+, and internal circuitry; must be low-impedance for accurate threshold stability. |
| 3 - IN+ | Undervoltage/overvoltage threshold input | Noninverting input for comparator; accepts resistor-divider network from monitored rail (e.g., 5-cell Li+ stack). |
| 4 - CLEAR | Latch control input | Drives high to latch OUT high after overvoltage event; must be low at power-up; connect to GND if unused. |
| 5 - VCC | Power supply input | Accepts 4V–28V; internal UVLO holds OUT asserted down to 1.5V, ensuring valid state during brownout. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed hysteresis | 8.3% VTH+ - eliminates design-in variability and external hysteresis components, reducing BOM count and layout area. |
| Latched output mode | Digital CLEAR input enables persistent fault indication until manual reset - essential for diagnostic logging and safety-critical shutdown. |
| High-voltage open-drain output | 28V-tolerant sink - interfaces directly with 12V/24V control logic or P-channel MOSFET gates without external level shifters. |
| Ultra-low quiescent current | 3.5µA typical at 12V - extends battery life in always-on monitoring applications such as portable medical devices and IoT edge nodes. |
| Extended temperature range | –40°C to +125°C operation - meets AEC-Q100 stress requirements for automotive powertrain and body electronics. |
Applications
| Automotive Battery Supervision | Industrial DC-DC Converter Protection |
|---|---|
|
Use Scenario: Monitoring 5-cell Li+ battery stack (nominal 21V) in EV charging modules or ADAS domain controllers. IC Role / Device Role / Timing Role: Undervoltage lockout (UVLO) and overvoltage shutdown (OVS) supervisor with latched fault reporting via CLEAR-controlled output. Use Value: Prevents deep discharge and thermal runaway by cutting off DC-DC converter input when stack voltage falls below 18.9V or rises above 23.1V, using factory-trimmed 8.3% hysteresis for noise margin. |
Use Scenario: Protecting 24V industrial PLC power supplies against input overvoltage events caused by regenerative braking or lightning-induced surges. IC Role / Device Role / Timing Role: High-voltage reset supervisor with 150ms timeout, asserting open-drain output to disable upstream MOSFET switch upon sustained overvoltage. Use Value: Ensures clean, chatter-free shutdown without false triggering-critical for maintaining system integrity during transient spikes on factory floor power rails. |
| Notebook Power Sequencing | Telecom Line Card Voltage Monitoring |
|
Use Scenario: Enabling safe startup and brownout recovery in ultrabook mainboard power management, where 12V/19V rails require precise sequencing. IC Role / Device Role / Timing Role: Single-rail voltage detector with latched output used to hold processor reset until stable VCC is confirmed for ≥150ms. Use Value: Guarantees deterministic boot behavior by preventing premature release of reset signal during marginal input conditions, improving field reliability. |
Use Scenario: Monitoring –48V telecom backup battery voltage in line cards, adapted via MAX6460-style negative-voltage configuration (not applicable to MAX6457UKD3C+T but enabled by family architecture). IC Role / Device Role / Timing Role: Precision voltage threshold detector referenced to internal 2.25V bandgap, configured with external resistors for custom trip points. Use Value: Delivers ±1.5% total trip accuracy over temperature-meeting GR-1089-CORE immunity requirements for telecom infrastructure uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6457UKD3B+T | Same 5-pin SOT23 package and 150ms timeout, but 5% hysteresis instead of 8.3%. | Suitable for moderate-noise environments where tighter hysteresis tolerance is acceptable. | Select when lower hysteresis is sufficient and cost optimization is prioritized over maximum noise immunity. |
| TLV809E33DBZR | 3.3V fixed-threshold, no hysteresis trim, 140ms timeout, 3-pin SOT23, 1.8–6V supply. | Limited to low-voltage rails; lacks programmable thresholds, high-voltage tolerance, and latch functionality. | Use only for simple 3.3V supply monitoring where extended voltage range and latching are unnecessary. |
Compared with MAX6457UKD3B+T and TLV809E33DBZR, the MAX6457UKD3C+T provides superior noise resilience via its 8.3% factory-trimmed hysteresis and maintains full 4V–28V operational flexibility-making it the preferred choice for harsh-environment battery-stack and industrial power-rail supervision where false trips must be eliminated.
Availability
MAX6457UKD3C+T is available at Aetrix Electronics and suitable for automotive battery management, industrial DC-DC converter protection, and notebook power sequencing requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned performance.
Supply support for MAX6457UKD3C+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 with precision, reliability, and innovation.
The MAX6457–MAX6460 family was designed specifically for high-voltage, low-power system supervision-delivering robust, programmable voltage monitoring in miniature SOT packages for battery-powered and ruggedized electronic systems.
FAQ
What is the exact timeout period of the MAX6457UKD3C+T?
The MAX6457UKD3C+T has a fixed minimum reset timeout period of 150ms. This means the output remains asserted (low) for at least 150ms after the monitored voltage crosses the rising threshold (VTH+), ensuring immunity to short-duration transients. The actual timeout may vary slightly with temperature but is guaranteed ≥150ms across –40°C to +125°C.
Does the MAX6457UKD3C+T support window voltage detection?
No, the MAX6457UKD3C+T is a single-threshold monitor and does not support window detection. It monitors either undervoltage or overvoltage (with latched output) using one comparator. For window detection, consider the MAX6458UKD3C+T or MAX6459UTC+T, which integrate dual comparators and separate or combined outputs for upper/lower limits.
Can the MAX6457UKD3C+T operate with a supply voltage below 4V?
Yes-the MAX6457UKD3C+T asserts its output low for VCC between 1.5V and 4V due to internal undervoltage lockout (UVLO). Below 1.5V, the device is nonfunctional, but within 1.5V–4V, OUT remains reliably low, providing a valid "power-fail" indication even during brownout conditions.
What is the function of the CLEAR pin on the MAX6457UKD3C+T?
The CLEAR pin on the MAX6457UKD3C+T controls latched output behavior: driving CLEAR high after an overvoltage event latches OUT high until CLEAR is toggled low. At power-up, CLEAR must be held low (e.g., via GND connection or RC network) to ensure proper initialization. When unused, CLEAR should be tied to GND.
Is the MAX6457UKD3C+T AEC-Q100 qualified?
The MAX6457UKD3C+T is not explicitly AEC-Q100 qualified per the datasheet; only the MAX6459UTA/V+ and MAX6459UT_/V+ variants carry the /V suffix denoting automotive qualification. However, the MAX6457UKD3C+T is fully specified from –40°C to +125°C and shares the same BiCMOS process and robustness features-making it widely deployed in automotive subsystems where full AEC-Q100 certification is not mandated.
MAX6457UKD3C+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 90ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6457UKD3C+T FAQ
1.How can I place an order for MAX6457UKD3C+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6457UKD3C+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 MAX6457UKD3C+T reliable?
The price and inventory of MAX6457UKD3C+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6457UKD3C+T is usually 5 days.
3.What payment methods are accepted for MAX6457UKD3C+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6457UKD3C+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6457UKD3C+T?
MAX6457UKD3C+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6457UKD3C+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 MAX6457UKD3C+T?
For technical support, including MAX6457UKD3C+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6457UKD3C+T requirements.
6.How does Aetrix verify that MAX6457UKD3C+T is sourced from the original manufacturer or authorized distributors?
All MAX6457UKD3C+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 MAX6457UKD3C+T meets industry standards.
7.What is the process for return or replacement of MAX6457UKD3C+T?
All MAX6457UKD3C+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6457UKD3C+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 MAX6457UKD3C+T part is unused and in its original packaging.
Return procedure for MAX6457UKD3C+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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