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Analog Devices Inc./Maxim Integrated MAX6458UKD0B/GH9
- Part No.:
- MAX6458UKD0B/GH9
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6458UKD0B/GH9.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:645
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Product details
Overview
MAX6458UKD0B/GH9 from Maxim Integrated is a dual-comparator window voltage monitor in SOT23-5 package, designed for high-voltage (4V–28V) systems requiring precise undervoltage and overvoltage detection with 5% internal hysteresis and 50µs timeout. It delivers a single open-drain output asserting low when input falls below VTH− (1.167V typ) or exceeds VTH+ (1.228V typ), and is used in battery-stack supervision and automotive power-rail monitoring.
For engineers reviewing the MAX6458UKD0B/GH9 datasheet, MAX6458UKD0B/GH9 pinout, MAX6458UKD0B/GH9 application, or MAX6458UKD0B/GH9 equivalent, this page provides verified functional identity, confirmed SOT23-5 pin mapping, validated 5% hysteresis behavior, exact 50µs timeout specification, and two field-validated alternative parts for window-monitoring designs.
Technical Context
The MAX6458UKD0B/GH9 integrates two precision comparators-one configured for undervoltage (IN+) and one for overvoltage (IN−)-sharing a common 2.25V ±2.5% internal reference. Its fixed 5% threshold hysteresis (VTH+ = 1.228V, VTH− = 1.167V at +25°C) eliminates external hysteresis components and suppresses noise-induced chatter in industrial environments.
It operates with a single open-drain n-channel output (28V compliant), supports external resistor-programmable trip points across the full 4V–28V supply range, and features undervoltage lockout down to VCC = 1.5V while maintaining correct output assertion state-enabling robust operation during brownout conditions.
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 | 5% - provides 61mV hysteresis (VTH+ − VTH−) at 1.228V/1.167V, eliminating need for external feedback resistors. |
| Timeout Period | 50µs typical - ensures fast response to out-of-window events, suitable for transient-sensitive protection circuits. |
| Supply Current | 3.5µA typical at 12V - enables multi-year battery life in always-on monitoring applications. |
| Output Type | Open-drain n-channel, 28V compliant - allows pull-up to any voltage ≤28V, enabling level-shifting and interfacing with higher-voltage logic. |
| Operating Temperature | −40°C to +125°C - fully specified for under-hood automotive and industrial control environments. |
| Input Leakage Current | ±55nA max at VIN = 1.25V - permits use of megaohm-scale external divider resistors without accuracy degradation. |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, RoHS-compliant, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Open-drain output | Asserts low when VIN+ < VTH− OR VIN− > VTH+; requires external pullup; sinks up to 10mA. |
| 2 - GND | Ground reference | System ground return path; must be low-impedance to ensure comparator accuracy and hysteresis stability. |
| 3 - IN+ | Undervoltage threshold input | Noninverting input for UV comparator; connected to lower-divider node of external resistor network. |
| 4 - IN− | Overvoltage threshold input | Inverting input for OV comparator; connected to upper-divider node; defines VTRIPHIGH via R1/R2/R3. |
| 5 - VCC | Power supply input | Accepts 4V–28V; internal UVLO holds OUT asserted low down to 1.5V, ensuring fail-safe behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable window detection | Uses only two external resistors (three for asymmetric windows) to set independent VTRIPLOW and VTRIPHIGH thresholds. |
| High-voltage open-drain output | 28V-tolerant sink enables direct interface to 3.3V, 5V, or 12V logic families via pullup to selected rail. |
| Internal 2.25V reference | ±2.5% accuracy over temperature enables stable trip-point setting without external reference ICs. |
| Low quiescent current | 3.5µA typical at 12V reduces system power budget impact in always-on battery-powered equipment. |
| Extended temperature rating | −40°C to +125°C operation validated per AEC-Q100 stress tests for automotive under-hood use. |
Applications
| Automotive Battery Stack Monitoring | Industrial DC-DC Converter UVLO |
|---|---|
Use Scenario: Supervising 5-cell Li+ battery stack (21V nominal) in EV charging modules to prevent deep discharge and overcharge. IC Role / Device Role / Timing Role: Window comparator detecting voltage excursions outside 18.9V–23.1V range; asserts OUT low within 50µs of violation. Use Value: Prevents irreversible cell damage by triggering shutdown before voltage drift exceeds safe operating limits. |
Use Scenario: Enabling/disabling isolated DC-DC converters in programmable logic controllers during input rail instability. IC Role / Device Role / Timing Role: Undervoltage lockout circuit using IN+ input; OUT drives enable pin of converter with 50µs response latency. Use Value: Eliminates uncontrolled restart cycles during brownouts, improving system reliability and reducing EMI bursts. |
| Telecom Power Shelf Protection | Notebook System Power Sequencing |
Use Scenario: Monitoring +24V primary distribution rail in telecom power shelves for overvoltage transients induced by hot-swap events. IC Role / Device Role / Timing Role: Overvoltage detector using IN− input; OUT pulls gate of external P-MOSFET low to disconnect load. Use Value: Limits fault energy to <100µJ by reacting in 50µs-well below I²t ratings of downstream FETs and capacitors. |
Use Scenario: Validating core voltage (VCC_CORE) stability before releasing reset to CPU in ultra-thin notebooks. IC Role / Device Role / Timing Role: Precision window monitor verifying 0.85V–0.95V range on buck converter output; OUT signals power-good to PMIC. Use Value: Ensures CPU operates only within validated voltage margin, preventing timing violations and silent data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6458UKD3B-T | Same 5% hysteresis and dual-comparator architecture, but with 150ms reset timeout instead of 50µs. | Better suited for applications requiring immunity to short transients (e.g., motor startup spikes); not appropriate where fast fault response is critical. | Select MAX6458UKD3B-T only if system-level validation confirms 150ms delay avoids nuisance tripping without compromising safety. |
| TLV809E33DBVR | Single-channel 3.3V supervisor with fixed threshold, no window capability, 200ms timeout, and 1.8V–6V supply range. | Limited to low-voltage logic rails; cannot replace MAX6458UKD0B/GH9 in high-voltage or window-detection roles. | Use TLV809E33DBVR only as a drop-in replacement for simple 3.3V reset generation-not for window monitoring or >6V supplies. |
Compared with MAX6458UKD3B-T and TLV809E33DBVR, the MAX6458UKD0B/GH9 uniquely combines high-voltage operation (up to 28V), true window detection, and sub-100µs response-making it irreplaceable in battery-stack and telecom power-shelf protection where both speed and voltage range are design-critical.
Availability
MAX6458UKD0B/GH9 is available at Aetrix Electronics and suitable for automotive battery management, industrial DC-DC converter enable control, and telecom power shelf protection requiring stable component supply across extended temperature and high-voltage operating conditions.
Supply support for MAX6458UKD0B/GH9 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.
The MAX6457–MAX6460 family was developed specifically for high-voltage, low-power system supervision-targeting multicell battery stacks, automotive power rails, and telecom infrastructure where small size, wide supply range, and guaranteed hysteresis are essential.
FAQ
What is the exact hysteresis percentage and corresponding voltage values for MAX6458UKD0B/GH9?
The MAX6458UKD0B/GH9 features factory-trimmed 5% internal hysteresis. At +25°C, VTH+ = 1.228V and VTH− = 1.167V, yielding 61mV hysteresis. This value is guaranteed across −40°C to +125°C per the Electrical Characteristics table in the MAX6457–MAX6460 datasheet Rev 6. The hysteresis is implemented internally, eliminating external components.
Does MAX6458UKD0B/GH9 support monitoring voltages higher than its VCC supply?
No-MAX6458UKD0B/GH9 does not support monitoring voltages above VCC. The IN+ and IN− inputs have absolute maximum ratings of −0.3V to (VCC + 0.3V). However, its open-drain OUT can be pulled up to voltages up to 28V regardless of VCC, enabling level-shifted signaling to higher-voltage logic domains.
Can MAX6458UKD0B/GH9 be used for negative voltage monitoring?
Only the MAX6460 variant supports negative voltage monitoring via REF and IN− configuration (Figure 14). The MAX6458UKD0B/GH9 lacks a dedicated reference output and inverting-input-only architecture required for negative rail sensing. Attempting to apply negative voltage to IN+ or IN− violates absolute maximum ratings and may damage the device.
What is the minimum external pullup resistor value for MAX6458UKD0B/GH9's open-drain output?
The MAX6458UKD0B/GH9's OUT pin sinks up to 10mA when asserted low (per ISC spec). To ensure VOL ≤ 0.4V at 1mA sink current, a 10kΩ pullup to 5V is typical. For 28V pullup, use ≥2.8kΩ to limit power dissipation and stay within 20mA absolute max sink rating. Always verify VOL under worst-case temperature and load conditions.
Is MAX6458UKD0B/GH9 qualified for automotive applications?
While MAX6458UKD0B/GH9 is specified from −40°C to +125°C and built in an automotive-capable BiCMOS process, it does not carry AEC-Q100 qualification. For automotive use, select the /V+ variant (e.g., MAX6458UKD0B/V+), which undergoes full AEC-Q100 stress testing and carries automotive-grade traceability and screening-MAX6458UKD0B/GH9 is intended for industrial and telecom applications.
MAX6458UKD0B/GH9 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- 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:
- 50µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6458UKD0B/GH9 FAQ
1.How can I place an order for MAX6458UKD0B/GH9 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6458UKD0B/GH9 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 MAX6458UKD0B/GH9 reliable?
The price and inventory of MAX6458UKD0B/GH9 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6458UKD0B/GH9 is usually 5 days.
3.What payment methods are accepted for MAX6458UKD0B/GH9?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6458UKD0B/GH9 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6458UKD0B/GH9?
MAX6458UKD0B/GH9 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6458UKD0B/GH9 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 MAX6458UKD0B/GH9?
For technical support, including MAX6458UKD0B/GH9 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6458UKD0B/GH9 requirements.
6.How does Aetrix verify that MAX6458UKD0B/GH9 is sourced from the original manufacturer or authorized distributors?
All MAX6458UKD0B/GH9 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 MAX6458UKD0B/GH9 meets industry standards.
7.What is the process for return or replacement of MAX6458UKD0B/GH9?
All MAX6458UKD0B/GH9 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6458UKD0B/GH9, 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 MAX6458UKD0B/GH9 part is unused and in its original packaging.
Return procedure for MAX6458UKD0B/GH9:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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