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Analog Devices Inc./Maxim Integrated MAX6457UKD0C-T
- Part No.:
- MAX6457UKD0C-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6457UKD0C-T.pdf
- Description:
- IC SUPERVISOR LOW CUR VOLT MON
- Quantity:
- Payment:
- Shipping:
Inventory:1,775
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Product details
Overview
MAX6457UKD0C-T from Maxim Integrated is a single-channel, high-voltage undervoltage/overvoltage monitor IC with 8.3% internal threshold hysteresis and 50μs timeout period, operating from 4V to 28V supply. It features a precision 2.25V bandgap reference, open-drain n-channel output (28V-compliant), 3.5μA typical supply current at 12V, and latched-output operation via CLEAR pin. It is used in multicell Li+ battery-stack equipment for undervoltage lockout and overvoltage shutdown.
For engineers reviewing the MAX6457UKD0C-T datasheet, MAX6457UKD0C-T pinout, MAX6457UKD0C-T application, or MAX6457UKD0C-T equivalent, key selection criteria include its fixed 8.3% hysteresis option, SOT23-5 package, latchable output behavior, -40°C to +125°C operation, and compatibility with high-side voltage monitoring circuits using external resistor dividers.
Technical Context
The MAX6457UKD0C-T implements a single comparator with internal 2.25V ±2.5% reference and factory-trimmed 8.3% hysteresis (VTH+ = 1.093V–1.151V, VTH− = 1.071V–1.151V at −40°C to +85°C), enabling robust noise immunity without external components. Its CLEAR input supports latched-mode operation: driving CLEAR high after VIN+ exceeds VTH+ holds OUT high until manually cleared.
It uses an open-drain output capable of sinking up to 10mA with VOL ≤ 0.4V at ISINK = 1mA and VCC ≥ 4.0V across −40°C to +125°C, and tolerates pullup voltages up to +28V independent of VCC. Startup time is 2ms after VCC rises from GND to ≥4V, and IN+ leakage is ±55nA at VIN = 1.25V and VCC = +28V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4V to 28V - powers directly from high-voltage rails like 5-cell Li+ stacks (~21V nominal) without external regulators. |
| Threshold Hysteresis | 8.3% - reduces false triggering in noisy automotive/industrial environments; eliminates need for external hysteresis resistors. |
| Timeout Period | 50μs - enables fast response to overvoltage events while avoiding transient-induced false asserts. |
| Supply Current | 3.5μA typ at 12V - minimizes quiescent power draw in always-on battery-backed systems. |
| Output Type | Open-drain n-channel - allows flexible pullup to any voltage ≤28V, supporting level-shifting and wired-OR configurations. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and telecom infrastructure applications. |
| Reference Voltage | 2.25V ±2.5% - stable internal reference enables accurate trip-point programming via two external resistors. |
Pinout & Package
MAX6457UKD0C-T is housed in a 5-pin SOT23 package (package code U5+1, outline 21-0057), with 1.3mm × 2.3mm footprint and 0.95mm height. Pin 1 is OUT, Pin 2 is GND, Pin 3 is IN+, Pin 4 is CLEAR, and Pin 5 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Open-drain monitor output | Asserts low when VIN+ drops below VTH− or VCC < 4V; goes high after 50μs timeout when VIN+ exceeds VTH+; requires external pullup. |
| GND (Pin 2) | Ground reference | Return path for internal circuitry and comparator inputs; must be low-impedance for stable threshold accuracy. |
| IN+ (Pin 3) | Undervoltage/overvoltage threshold input | Noninverting input for comparator; accepts divided VCC or external monitored voltage (0 to VCC range). |
| CLEAR (Pin 4) | Latch control input | Drives high to latch OUT high after overvoltage event; must be low at power-up; connect to GND if unused. |
| VCC (Pin 5) | Supply voltage input | Accepts 4V–28V; device remains functional down to 1.5V but outputs assert low below 4V for undervoltage lockout. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed hysteresis | 8.3% - eliminates external hysteresis network, simplifies BOM, and ensures consistent noise immunity across temperature. |
| Low quiescent current | 3.5μA at 12V - extends battery life in portable and remote-sensor applications powered by multicell stacks. |
| High-voltage open-drain output | 28V-compliant sink - enables direct interface to 12V/24V logic or MOSFET gate drivers without level shifters. |
| Latched output mode | CLEAR-controlled - captures and holds overvoltage events for system-level fault logging or manual reset requirement. |
| Wide input common-mode range | 0V to VCC on IN+ - supports monitoring of voltages referenced to ground or floating supplies within supply limits. |
Applications
| Automotive Battery Management | Multicell Li+ Stack Protection |
|---|---|
Use Scenario: Monitoring 5-cell Li+ battery stack (~21V nominal) in EV auxiliary systems or ADAS modules. IC Role / Device Role / Timing Role: Undervoltage lockout (UVLO) and overvoltage protection (OVP) supervisor with latched fault reporting. Use Value: Prevents deep discharge and thermal runaway by disabling DC-DC converter when stack voltage falls below 18.9V or rises above 23.1V. |
Use Scenario: Power sequencing and fault detection in industrial handheld meters powered by replaceable Li+ packs. IC Role / Device Role / Timing Role: Single-supply voltage supervisor with 50μs response for rapid shutdown during surge events. Use Value: Ensures reliable brownout recovery and avoids data corruption in microcontroller-based measurement subsystems. |
| Notebook Power Integrity | Telecom DC Power Shelf |
Use Scenario: Monitoring main 19V adapter input in ruggedized notebooks deployed in field service environments. IC Role / Device Role / Timing Role: High-voltage reset generator with 8.3% hysteresis to reject line noise and ripple. Use Value: Eliminates spurious reboots caused by transient dips/spikes on unregulated AC/DC adapters. |
Use Scenario: Supervising 48V DC distribution in telecom base station power shelves with redundant supplies. IC Role / Device Role / Timing Role: Input voltage validator before enabling hot-swap controllers or load switches. Use Value: Provides fail-safe enable/disable signaling with 28V-tolerant output compatible with existing 48V backplane logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6457UKD0B-T | 5% hysteresis instead of 8.3%; otherwise identical pinout, timing, and electrical specs. | Suitable where moderate noise immunity suffices and tighter trip-point tolerance is prioritized. | Select when system noise profile permits lower hysteresis and higher threshold accuracy is required. |
| TLV809E29DBZR | Fixed 2.93V threshold, no hysteresis trim, 3.5V–6V supply only, SOT23-3 package. | Limited to low-voltage rails; lacks latch, adjustable trip, or high-voltage tolerance. | Use only for simple 3.3V/5V rail monitoring where cost and size outweigh flexibility and robustness. |
Compared with MAX6457UKD0B-T and TLV809E29DBZR, the MAX6457UKD0C-T delivers superior noise resilience in harsh environments due to its factory-set 8.3% hysteresis, while retaining full programmability via external resistors and compatibility with 28V systems-making it optimal for automotive and industrial high-voltage supervision where reliability trumps minimal BOM count.
Availability
MAX6457UKD0C-T is available at Aetrix Electronics and suitable for automotive battery management, multicell Li+ stack protection, and telecom DC power shelf applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned performance margins.
Supply support for MAX6457UKD0C-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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications, emphasizing high reliability and extended temperature operation.
The MAX6457–MAX6460 product line targets high-voltage, low-power system supervision in space-constrained environments, delivering configurable voltage monitoring with integrated references, hysteresis, and latch functionality in miniature SOT packages.
FAQ
What is the exact threshold hysteresis value for MAX6457UKD0C-T?
The MAX6457UKD0C-T has a factory-trimmed internal threshold hysteresis of 8.3% of VTH+, corresponding to VTH+ = 1.093V–1.151V and VTH− = 1.071V–1.151V over −40°C to +85°C. This value is fixed per the "C" suffix in the part number and eliminates need for external hysteresis components.
Does MAX6457UKD0C-T support latched output behavior?
Yes, the MAX6457UKD0C-T supports latched output via its CLEAR pin: driving CLEAR high after VIN+ exceeds VTH+ latches OUT high until CLEAR is toggled low. CLEAR must be held low during power-up; tie to GND if unused. This feature is confirmed in the functional diagram and timing specifications.
Can MAX6457UKD0C-T monitor voltages higher than its VCC supply?
No - the IN+ input voltage must remain within 0V to VCC per absolute maximum ratings. However, the open-drain OUT can be pulled up to voltages up to +28V regardless of VCC, enabling level-shifted signaling to higher-voltage logic or gate drivers.
What is the timeout period of MAX6457UKD0C-T and how is it configured?
The MAX6457UKD0C-T has a fixed 50μs timeout period, as indicated by the "0" in its part number suffix. This is not user-configurable; devices with 150ms timeout use "3" (e.g., MAX6457UKD3C-T). The timeout begins when VIN+ crosses VTH+ and ends when OUT transitions high.
Is MAX6457UKD0C-T qualified for automotive applications?
The MAX6457UKD0C-T is specified over −40°C to +125°C and packaged in RoHS-compliant SOT23, but AEC-Q100 qualification applies only to MAX6459UTA/V-T and MAX6459UT_/V+ variants per the datasheet. MAX6457UKD0C-T is intended for industrial and general high-reliability applications, not automotive-grade deployment.
MAX6457UKD0C-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 50µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6457UKD0C-T FAQ
1.How can I place an order for MAX6457UKD0C-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6457UKD0C-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 MAX6457UKD0C-T reliable?
The price and inventory of MAX6457UKD0C-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6457UKD0C-T is usually 5 days.
3.What payment methods are accepted for MAX6457UKD0C-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6457UKD0C-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6457UKD0C-T?
MAX6457UKD0C-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6457UKD0C-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 MAX6457UKD0C-T?
For technical support, including MAX6457UKD0C-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6457UKD0C-T requirements.
6.How does Aetrix verify that MAX6457UKD0C-T is sourced from the original manufacturer or authorized distributors?
All MAX6457UKD0C-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 MAX6457UKD0C-T meets industry standards.
7.What is the process for return or replacement of MAX6457UKD0C-T?
All MAX6457UKD0C-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6457UKD0C-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 MAX6457UKD0C-T part is unused and in its original packaging.
Return procedure for MAX6457UKD0C-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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