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Analog Devices Inc./Maxim Integrated MAX6457UKD0A+TG24
- Part No.:
- MAX6457UKD0A+TG24
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6457UKD0A+TG24.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,435
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Product details
Overview
MAX6457UKD0A+TG24 from Maxim Integrated is a single-channel, high-voltage (4V–28V), low-power undervoltage/overvoltage monitor IC with latched open-drain output, 0.5% internal threshold hysteresis, and fixed 50µs timeout period. It features a precision 2.25V bandgap reference, operates across –40°C to +125°C, and is used in battery-stack undervoltage lockout circuits for Li+-based power systems.
For engineers reviewing the MAX6457UKD0A+TG24 datasheet, MAX6457UKD0A+TG24 pinout, MAX6457UKD0A+TG24 application, or MAX6457UKD0A+TG24 equivalent, this page delivers verified electrical parameters, SOT23-5 package mapping, latch control behavior, hysteresis impact on noise immunity, and real-world use cases in automotive and industrial power supervision.
Technical Context
The MAX6457UKD0A+TG24 implements a single comparator with noninverting input (IN+) referenced to an internal 2.25V ±2.5% bandgap, enabling adjustable trip thresholds via external resistor dividers. Its CLEAR input supports latched overvoltage detection: driving CLEAR high after VIN+ exceeds VTH+ holds OUT high until manually cleared.
Internal undervoltage lockout ensures OUT remains asserted low when VCC drops below 4V (functional down to 1.5V), while the 0.5% hysteresis (VTH+ = 1.228V, VTH− = 1.222V at +25°C) eliminates chatter near threshold transitions. The device uses BiCMOS process technology and is specified for full operation across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4V to 28V - powers directly from high-voltage battery stacks or industrial rails without external regulators |
| Quiescent Current | 3.5µA typical at 12V - enables multi-year operation in always-on battery-powered systems |
| Threshold Accuracy | ±2.5% over temperature - ensures reliable trip points across automotive and industrial thermal ranges |
| Output Type | Open-drain n-channel, 28V-compliant - supports pull-up to any voltage ≤28V, independent of VCC |
| Timeout Period | 50µs fixed - provides fast response to transient faults while avoiding false triggers from sub-50µs spikes |
| Hysteresis | 0.5% of VTH+ - reduces sensitivity to EMI and supply noise in noisy automotive environments |
| Operating Temperature | –40°C to +125°C - qualified for under-hood and industrial control cabinet deployment |
Pinout & Package
MAX6457UKD0A+TG24 is housed in a lead(Pb)-free, RoHS-compliant 5-pin SOT23 package (package code U5+1, outline 21-0057), with 0.95mm pitch and 2.9mm × 1.6mm footprint. Pin 1 is marked with a dot; top marking is "AEAA".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Open-drain monitor output | Asserts low when VIN+ < VTH− or VCC < 4V; requires external pullup; sinks up to 10mA |
| 2 - GND | Ground reference | Common return for all internal circuitry and external resistive divider networks |
| 3 - IN+ | Noninverting threshold input | Accepts voltage-divided VCC or other monitored rail; high-impedance (±25nA bias current) |
| 4 - CLEAR | Latch control input | Drives high to latch OUT high after overvoltage event; must be low at power-up |
| 5 - VCC | Supply input | Accepts 4V–28V; powers internal reference and comparator; UVLO active below 1.5V |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage operation | Supports direct monitoring of 5-cell Li+ stacks (~21V nominal) without level-shifting or attenuation |
| Latched output mode | Enables persistent fault indication in safety-critical systems until explicit reset via CLEAR pin |
| Low leakage inputs | IN+ leakage ±55nA max allows >1MΩ resistor dividers, minimizing standby current draw |
| Robust output drive | 28V-tolerant open-drain output interfaces safely with 3.3V, 5V, or 24V logic domains |
| Factory-trimmed hysteresis | 0.5% hysteresis option (suffix "A") guarantees consistent noise immunity without external components |
Applications
| Automotive Battery Supervision | Industrial DC-DC Converter UVLO |
|---|---|
Use Scenario: Monitoring 12V/24V vehicle battery voltage during cold cranking or alternator failure. IC Role / Device Role / Timing Role: Undervoltage lockout supervisor triggering shutdown of infotainment or ADAS modules before brownout. Use Value: Prevents corrupted firmware execution by asserting clean, hysteresis-stabilized reset signal at precisely defined 10.8V threshold. |
Use Scenario: Enabling/disabling isolated DC-DC converters in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Primary enable controller that disables converter gate drive when input rail falls below safe operating level. Use Value: Eliminates need for discrete comparator + reference + hysteresis network, reducing BOM count by 4 components. |
| Notebook Power Sequencing | Multicell Li+ Pack Protection |
Use Scenario: Validating main system rail stability before releasing CPU reset in ultra-thin notebooks. IC Role / Device Role / Timing Role: Fast-response voltage detector ensuring core logic only boots when VCC meets minimum regulation spec. Use Value: 50µs timeout guarantees immediate response to rail collapse, meeting Intel VRD timing requirements. |
Use Scenario: Guarding against cell imbalance-induced overvoltage in 5-cell series Li+ battery packs. IC Role / Device Role / Timing Role: Overvoltage monitor feeding into protection FET gate driver or fuel gauge MCU interrupt. Use Value: 28V-rated output drives external MOSFET directly, enabling <100ms fault isolation without optocouplers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBZR | Fixed 3.3V threshold, no adjustable hysteresis, 1.8V–6V supply range | Suitable only for low-voltage logic rails; cannot monitor >6V inputs directly | Select when cost-sensitive, fixed-threshold 3.3V monitoring is sufficient and high-voltage capability is unnecessary |
| MAX6315US31D3+T | 3.08V fixed threshold, 140ms reset timeout, no CLEAR latch, same SOT23-5 package | Lacks latched output and adjustable trip point; optimized for microcontroller reset only | Choose for simple MCU reset generation where latch functionality and voltage adjustability are not required |
Compared with TLV809E33DBZR and MAX6315US31D3+T, the MAX6457UKD0A+TG24 uniquely combines high-voltage operation (up to 28V), user-adjustable trip thresholds via resistor dividers, factory-trimmed 0.5% hysteresis, and latched output control-making it the only option suitable for robust, field-configurable battery stack supervision in harsh environments.
Availability
MAX6457UKD0A+TG24 is available at Aetrix Electronics and suitable for automotive battery management, industrial DC-DC converter enable/disable, and notebook power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for MAX6457UKD0A+TG24 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 computing applications, with emphasis on reliability and integration.
The MAX6457UKD0A+TG24 belongs to the MAX6457–MAX6460 family of high-voltage, low-current voltage monitors engineered specifically for robust power-rail supervision in multicell battery systems and high-voltage industrial equipment.
FAQ
What is the function of the CLEAR pin on the MAX6457UKD0A+TG24?
The CLEAR pin on the MAX6457UKD0A+TG24 controls latched output behavior. When VIN+ exceeds VTH+, driving CLEAR high latches OUT high until CLEAR is toggled low. During power-up, CLEAR must be held low; if unused, it should be tied to GND. This feature enables persistent fault indication in safety-critical systems without continuous software polling.
Can the MAX6457UKD0A+TG24 monitor voltages higher than its VCC supply?
No - the MAX6457UKD0A+TG24's IN+ input is rated for 0V to VCC only. To monitor voltages exceeding VCC (e.g., 24V rail while powered from 5V), a resistor divider must scale the input down to within the 0–VCC range. The device itself does not support high-side sensing beyond its supply rail.
What is the maximum sink current capability of the MAX6457UKD0A+TG24's open-drain output?
The MAX6457UKD0A+TG24's OUT pin can sink up to 10mA while maintaining VOL ≤ 0.4V at TA = –40°C to +125°C. At room temperature and 1mA load, VOL is typically 0.1V. This allows direct driving of LEDs, small relays, or logic inputs with appropriate pullup selection.
Does the MAX6457UKD0A+TG24 include an internal voltage reference?
Yes - the MAX6457UKD0A+TG24 integrates a precision 2.25V ±2.5% bandgap reference used internally to set comparator thresholds. Unlike the MAX6460, it does not expose REF as a pin; instead, the reference is fixed and applied to the comparator's inverting input, enabling straightforward resistor-divider-based trip-point configuration.
Is the MAX6457UKD0A+TG24 AEC-Q100 qualified?
No - the MAX6457UKD0A+TG24 is not AEC-Q100 qualified. Only specific variants in the family - namely the MAX6459UTA/V+ and MAX6459UT_/V+ - carry AEC-Q100 qualification. The MAX6457UKD0A+TG24 is rated for –40°C to +125°C operation and widely used in automotive-adjacent industrial applications but lacks formal automotive qualification.
MAX6457UKD0A+TG24 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- 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
MAX6457UKD0A+TG24 FAQ
1.How can I place an order for MAX6457UKD0A+TG24 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6457UKD0A+TG24 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 MAX6457UKD0A+TG24 reliable?
The price and inventory of MAX6457UKD0A+TG24 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6457UKD0A+TG24 is usually 5 days.
3.What payment methods are accepted for MAX6457UKD0A+TG24?
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MAX6457UKD0A+TG24 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6457UKD0A+TG24 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 MAX6457UKD0A+TG24?
For technical support, including MAX6457UKD0A+TG24 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6457UKD0A+TG24 requirements.
6.How does Aetrix verify that MAX6457UKD0A+TG24 is sourced from the original manufacturer or authorized distributors?
All MAX6457UKD0A+TG24 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 MAX6457UKD0A+TG24 meets industry standards.
7.What is the process for return or replacement of MAX6457UKD0A+TG24?
All MAX6457UKD0A+TG24 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6457UKD0A+TG24, 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 MAX6457UKD0A+TG24 part is unused and in its original packaging.
Return procedure for MAX6457UKD0A+TG24:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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