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Analog Devices Inc./Maxim Integrated MAX6458UKD0B+T
- Part No.:
- MAX6458UKD0B+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6458UKD0B+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,899
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Product details
Overview
MAX6458UKD0B+T from Analog Devices is a dual-threshold, window voltage monitor IC designed for high-voltage power-rail supervision in automotive and industrial systems. It features two precision comparators (one for undervoltage, one for overvoltage), 5% internal threshold hysteresis, 50μs timeout period, open-drain output, and operates from 4V to 28V supply with 3.5μA typical supply current at 12V. It is used in multicell Li+ battery-stack protection circuits to assert fault when input voltage falls outside an adjustable window.
For engineers reviewing the MAX6458UKD0B+T datasheet, MAX6458UKD0B+T pinout, MAX6458UKD0B+T application, or MAX6458UKD0B+T equivalent, this page delivers verified electrical specifications, SOT23-5 package layout, window-detection timing behavior, thermal derating data, and real-world design guidance for battery-powered equipment requiring AEC-Q100-aligned reliability.
Technical Context
The MAX6458UKD0B+T implements a dedicated window detection architecture using separate IN+ (undervoltage sense) and IN− (overvoltage sense) inputs referenced to an internal 2.25V ±2.5% bandgap. Its comparator outputs are combined internally to drive a single open-drain output that asserts low when VIN+ drops below VTH− (1.133V–1.194V) or VIN− exceeds VTH+ (1.133V–1.194V), with hysteresis fixed at 5% of VTH+.
It lacks latch control (CLEAR pin absent), uses only the 50μs timeout option (no 150ms mode), and supports external resistor programming of trip thresholds across the full 4V–28V monitoring range. The device remains functional down to VCC = 1.5V via undervoltage lockout, ensuring fail-safe assertion during brownout.
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. |
| Threshold Hysteresis | 5% - reduces false triggering in noisy environments like automotive power nets or motor-drive supplies. |
| Timeout Period | 50μs - enables fast response to sustained over/undervoltage faults while rejecting sub-50μs transients. |
| Supply Current | 3.5μA typ @ 12V - minimizes quiescent drain on battery-backed systems such as e-bikes or portable test gear. |
| Output Type | Open-drain n-channel, 28V-compliant - allows pull-up to any voltage ≤28V, enabling level-shifted logic interfacing. |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive and industrial control cabinet deployment. |
| Package | SOT23-5 - 2.9mm × 1.6mm footprint supports high-density PCB layouts in space-constrained modules. |
Pinout & Package
SOT23-5 package (outline 21-0057, land pattern 90-0174), 5-pin surface-mount, RoHS-compliant lead(Pb)-free construction with +T suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Open-drain monitor output | Asserts low when monitored voltage exits window; requires external pullup; sinks up to 10mA; compatible with 28V rail. |
| 2 - GND | Ground reference | Common return for all internal circuitry and external resistor dividers; must be low-impedance for accurate threshold setting. |
| 3 - IN+ | Undervoltage threshold input | Noninverting input for UV comparator; connected to lower-divider node; 25nA max input bias current preserves accuracy with MΩ-scale resistors. |
| 4 - IN− | Overvoltage threshold input | Inverting input for OV comparator; connected to upper-divider node; same bias current spec as IN+ for matched divider design. |
| 5 - VCC | Power supply input | Accepts 4V–28V; internal UVLO holds OUT asserted low down to 1.5V; powers internal reference and comparators. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | Enables true window detection with separate UV/OV thresholds-no external op-amps or logic required. |
| Factory-trimmed 5% hysteresis | Eliminates need for external positive feedback networks; ensures stable switching at threshold edges across temperature. |
| 2.25V ±2.5% internal reference | Provides stable trip-point anchor for resistor-divider programming; load-regulated to 50μV/μA for consistent VTRIP accuracy. |
| High-voltage open-drain output | Supports pull-up to 28V rail-enables direct interface with 3.3V/5V microcontrollers or higher-voltage FET gate drivers. |
| Fully specified −40°C to +125°C | Guarantees performance across automotive under-hood and industrial ambient extremes without derating. |
Applications
| Automotive Battery Management | Multicell Li+ Stack Supervision |
|---|---|
Use Scenario: Monitoring 5-cell Li+ battery pack (nominal 21V) for overvoltage (>23.1V) and undervoltage (<18.9V) conditions during charge/discharge cycles. IC Role / Device Role / Timing Role: Window comparator generating fault signal to BMS controller; 50μs timeout ensures rapid shutdown before cell damage occurs. Use Value: Prevents thermal runaway and capacity loss by enforcing strict voltage boundaries with factory-calibrated hysteresis. | Use Scenario: Powering industrial IoT sensor nodes from 24V DC bus with requirement to disable peripherals if rail sags below 20V or surges above 26V. IC Role / Device Role / Timing Role: High-voltage supervisor asserting reset to MCU when VCC exits safe window; open-drain output interfaces directly to 3.3V logic via 10kΩ pullup. Use Value: Enables reliable operation without external LDO or level-shifter; 3.5μA quiescent current extends battery life in always-on edge devices. |
| Telecom Power Shelf Monitoring | Industrial PLC Input Protection |
Use Scenario: Supervising −48V telecom power shelf output (via level-shifted configuration) to detect brownout or overvoltage events affecting line cards. IC Role / Device Role / Timing Role: Negative-voltage monitor using MAX6460 reference (not applicable here); MAX6458UKD0B+T used in positive-rail variant with resistor divider scaling. Use Value: Leverages high input impedance (≤25nA bias) to minimize loading on precision voltage dividers in redundant power systems. | Use Scenario: Protecting programmable logic controller analog input modules from field-wiring faults causing 24V rail collapse or surge injection. IC Role / Device Role / Timing Role: Fault detector driving optocoupler input to isolate and disable downstream ADC channels within 50μs of violation. Use Value: Meets IEC 61000-4-4 EFT immunity requirements by rejecting sub-50μs noise spikes while responding to sustained faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6458UKD0A+T | 0.5% hysteresis instead of 5%; identical 50μs timeout and SOT23-5 package | Better suited for precision low-noise rails where minimal hysteresis prevents unnecessary trips near threshold | Select when system noise floor is <10mV and tighter trip repeatability is required |
| TLV809E33DBVR | Single-channel 3.3V reset IC; no window capability; 1.6V–6V supply; 350ms reset timeout | Only monitors undervoltage; lacks overvoltage detection and adjustable thresholds | Use only for basic MCU reset in low-voltage embedded systems-not a functional substitute for window detection |
Compared with MAX6458UKD0A+T, the MAX6458UKD0B+T provides stronger noise immunity due to its 5% hysteresis, making it preferable in electrically harsh environments; compared with TLV809E33DBVR, it delivers true dual-threshold supervision essential for battery stack safety-critical applications.
Availability
MAX6458UKD0B+T is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC input protection, telecom power shelf monitoring, and multicell Li+ stack supervision requiring stable component supply across extended temperature ranges.
Supply support for MAX6458UKD0B+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 automotive, industrial, communications, and healthcare markets.
The MAX6457–MAX6460 product line delivers high-voltage, ultra-low-power voltage supervisors optimized for battery-powered and harsh-environment applications where precision, reliability, and small footprint are critical.
FAQ
What is the exact hysteresis percentage and timeout period configured in MAX6458UKD0B+T?
The MAX6458UKD0B+T is factory-trimmed for 5% internal threshold hysteresis and a fixed 50μs timeout period. These values are encoded in the "0B" suffix per Table 1 of the datasheet and cannot be modified externally. The hysteresis applies to both undervoltage and overvoltage thresholds, improving noise immunity without external components.
Does MAX6458UKD0B+T include a CLEAR input for latched operation?
No, the MAX6458UKD0B+T does not include a CLEAR input. Unlike the MAX6457 series, the MAX6458 family uses transparent (non-latching) operation: the OUT pin transitions immediately after the 50μs timeout when the input re-enters the valid window. The CLEAR pin is absent from the SOT23-5 pinout of MAX6458UKD0B+T.
Can MAX6458UKD0B+T monitor voltages higher than its 28V absolute maximum rating?
No, MAX6458UKD0B+T must never be exposed to input voltages exceeding 28V on any pin. While the open-drain OUT can be pulled up to 28V, the IN+ and IN− pins have absolute maximum ratings of (VCC + 0.3V). To monitor >28V rails, use external resistor dividers scaled to keep VIN+ and VIN− within 0–VCC, with VCC supplied separately at ≤28V.
What is the guaranteed operating temperature range for MAX6458UKD0B+T?
The MAX6458UKD0B+T is fully specified and guaranteed over −40°C to +125°C ambient temperature. This range is validated per JEDEC JESD22-A108 and applies to all electrical parameters including supply current, threshold accuracy, hysteresis, and output sink capability. No derating is required within this span.
How is the trip voltage programmed for window detection using MAX6458UKD0B+T?
Window detection uses two external resistors (R1, R2) forming a divider from VCC to GND, with IN+ connected to the R1–R2 node and IN− connected to the R2–GND node. Trip thresholds are calculated as VTRIPLOW = VTH− × (R1 + R2)/R2 and VTRIPHIGH = VTH+ × (R1 + R2)/R3 (where R3 is derived from R1/R2 selection). The MAX6458UKD0B+T's high input impedance (≤25nA) ensures minimal loading error.
MAX6458UKD0B+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:
- 50µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6458UKD0B+T FAQ
1.How can I place an order for MAX6458UKD0B+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6458UKD0B+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 MAX6458UKD0B+T reliable?
The price and inventory of MAX6458UKD0B+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6458UKD0B+T is usually 5 days.
3.What payment methods are accepted for MAX6458UKD0B+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6458UKD0B+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6458UKD0B+T?
MAX6458UKD0B+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6458UKD0B+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 MAX6458UKD0B+T?
For technical support, including MAX6458UKD0B+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6458UKD0B+T requirements.
6.How does Aetrix verify that MAX6458UKD0B+T is sourced from the original manufacturer or authorized distributors?
All MAX6458UKD0B+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 MAX6458UKD0B+T meets industry standards.
7.What is the process for return or replacement of MAX6458UKD0B+T?
All MAX6458UKD0B+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6458UKD0B+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 MAX6458UKD0B+T part is unused and in its original packaging.
Return procedure for MAX6458UKD0B+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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