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Analog Devices Inc./Maxim Integrated MAX6463UR18+T
- Part No.:
- MAX6463UR18+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6463UR18+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,009
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Product details
Overview
MAX6463UR18+T from Maxim Integrated is an ultra-low-power voltage detector with active-low open-drain output, designed for battery and power-supply monitoring in space-constrained portable systems. It features a factory-set 1.800V lower trip threshold (VTH−), ±2.5% threshold accuracy over −40°C to +125°C, 1.0µA supply current at 3.6V, and 17µs propagation delay. It is used in load switching and precision reset supervision where low quiescent current and stable threshold hysteresis are critical.
For engineers reviewing the MAX6463UR18+T datasheet, MAX6463UR18+T pinout, MAX6463UR18+T application, or MAX6463UR18+T equivalent, key selection criteria include its 1.8V detection threshold, open-drain output requiring external pull-up, −40°C to +125°C operation, SC70-3/SOT23-3 package compatibility, and immunity to short voltage transients.
Technical Context
The MAX6463UR18+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set its 1.800V VTH− threshold and 1.890V VTH+ upper threshold (5% hysteresis). Its open-drain output sinks current when asserted, enabling level-shifting across logic domains up to 6V via external pull-up.
It operates from 1.2V to 6.0V supply, consumes only 1.0µA typical ICC at 3.6V, and guarantees no false resets during fast VCC transients-its transient immunity is characterized down to sub-10µs glitches at 100mV overdrive. No external components are required for basic voltage monitoring functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Threshold (VTH−) | 1.800V nominal at +25°C; ±2.5% tolerance over −40°C to +125°C ensures reliable brown-out detection across automotive/industrial temperature ranges. |
| Supply Current (ICC) | 1.0µA typical at 3.6V; enables multi-year battery life in coin-cell–powered devices such as medical sensors and IoT endpoints. |
| Propagation Delay | 17µs (VCC falling); ensures rapid response to undervoltage events without excessive delay in safety-critical power sequencing. |
| Threshold Hysteresis | 5% (VTH+ = VTH− × 1.05); prevents output chatter near trip point during slow-rising/falling supply rails. |
| Output Type | Active-low open-drain; allows flexible interfacing to any logic rail ≤6V using external pull-up, supporting mixed-voltage system designs. |
| Operating Temperature | −40°C to +125°C; qualified for under-hood automotive, industrial control, and high-reliability portable equipment. |
| Package | SOT23-3; 2.92mm × 1.3mm footprint with 0.95mm height-ideal for PCB area–constrained wearable and handheld applications. |
Pinout & Package
SOT23-3 package: 3-pin surface-mount, lead-free (RoHS-compliant), moisture sensitivity level 1, rated for reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-drain output | Asserted low when VCC < VTH−; requires external pull-up resistor to define logic-high level and sink capability (max 1.0mA). |
| 2 (GND) | Ground reference | Primary return path for internal circuitry and output sink current; must be connected directly to system ground plane. |
| 3 (VCC) | Supply and monitored input | Single pin serves both power supply and voltage sense input; monitors same rail it powers-no separate sense line needed. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1.0µA supply current | Enables >10-year battery life in 20mAh coin cells used in remote sensors and wearables. |
| Factory-trimmed 1.800V threshold | Eliminates calibration overhead and external resistor dividers-reduces BOM count and layout complexity. |
| 5% internal hysteresis | Guarantees clean, chatter-free output transitions during noisy or slowly varying supply conditions. |
| Open-drain output with 6V tolerance | Supports level translation to higher-voltage logic (e.g., 3.3V MCU monitoring 1.8V rail) without additional level-shifters. |
| −40°C to +125°C guaranteed operation | Validated for extended temperature environments including automotive cabin and industrial motor control enclosures. |
Applications
| Battery Voltage Monitoring | Load Switch Control |
|---|---|
Use Scenario: Continuous monitoring of Li-ion cell voltage during discharge to prevent deep discharge below 1.8V cutoff. IC Role / Device Role / Timing Role: Voltage detector asserting low on OUT to trigger shutdown controller or disable charging FET gate drive. Use Value: Prevents irreversible battery damage by enforcing precise 1.8V undervoltage lockout with minimal current draw. |
Use Scenario: Enabling/disabling power to peripheral ICs (e.g., display driver, sensor hub) based on main rail stability. IC Role / Device Role / Timing Role: Supervisory signal source that gates enable logic for discrete load switches or PMIC enable inputs. Use Value: Ensures peripherals power up only after main supply reaches valid 1.8V level-eliminates glitch-induced initialization faults. |
| Noise-Immune µP Reset | Portable Medical Device Supervision |
Use Scenario: Providing clean reset signal to microcontroller during cold-start or brown-out in battery-powered instrumentation. IC Role / Device Role / Timing Role: Standalone reset generator with 17µs response and 5% hysteresis-no RC timing network required. Use Value: Delivers deterministic reset assertion without susceptibility to EMI or supply ripple that could cause spurious resets. |
Use Scenario: Monitoring backup coin-cell voltage in infusion pumps or glucose meters to preserve SRAM and real-time clock state. IC Role / Device Role / Timing Role: Low-current supervisor ensuring data integrity during primary power loss and seamless switchover. Use Value: Maintains functional safety compliance (IEC 62304) by guaranteeing memory retention and controlled shutdown at 1.8V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB18DBZR | 1.8V threshold, push-pull active-low output, 0.5µA ICC, SOT23-3 package. | Lacks open-drain flexibility; cannot interface to higher-voltage logic without level shifter. | Choose TLV803EB18DBZR if system uses single-rail logic and lowest possible ICC is prioritized over output configurability. |
| TPS3808G18DBVR | 1.8V threshold, push-pull active-low output, 1.1µA ICC, 200ms reset timeout, SOT23-6 package. | Includes built-in reset timer; larger footprint and fixed timeout not needed for pure voltage detection. | Choose TPS3808G18DBVR only if µP reset timeout functionality is required-otherwise adds unnecessary cost and board area. |
Compared with TLV803EB18DBZR and TPS3808G18DBVR, MAX6463UR18+T uniquely combines open-drain output, 1.0µA ICC, and SOT23-3 footprint-making it optimal for mixed-voltage, ultra-low-power detection where external pull-up simplifies design and reduces component count.
Availability
MAX6463UR18+T is available at Aetrix Electronics and suitable for battery monitoring, load switching, and noise-immune reset applications requiring stable component supply across industrial, medical, and portable electronics programs.
Supply support for MAX6463UR18+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 power management, sensing, and interface applications-with emphasis on reliability, integration, and low-power operation.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power voltage supervision in battery-operated and thermally demanding systems-delivering factory-trimmed thresholds, minimal ICC, and robust transient immunity without external components.
FAQ
What is the exact voltage threshold of MAX6463UR18+T and how is it specified?
The MAX6463UR18+T has a nominal lower trip threshold (VTH−) of 1.800V at +25°C, with ±2.5% accuracy over −40°C to +125°C. Per Table 1a, its guaranteed range is 1.755V (min) to 1.845V (max) across temperature. The upper threshold VTH+ is 1.890V nominal (5% hysteresis), ensuring stable release behavior during supply recovery.
Does MAX6463UR18+T require external components to function?
No-MAX6463UR18+T operates as a complete voltage detector with no external components required. Its precision bandgap reference, comparator, and trimmed resistor network are fully integrated. Only an external pull-up resistor is needed on the open-drain OUT pin to define the logic-high level, which is inherent to the output architecture-not a functional dependency.
What is the output configuration of MAX6463UR18+T and how does it interface with other logic?
MAX6463UR18+T features an active-low open-drain output. When asserted, OUT sinks current to GND; when inactive, it presents high impedance. This allows connection to any logic rail ≤6V via an external pull-up resistor-enabling direct interfacing with 1.8V, 3.3V, or 5V MCUs without level shifters, unlike push-pull alternatives.
How does MAX6463UR18+T handle short voltage transients on the VCC line?
MAX6463UR18+T is immune to short-duration VCC transients due to internal design and characterized transient rejection. As shown in Figure MAX6461 toc04, it tolerates falling glitches up to ~15µs wide at 100mV overdrive (i.e., VCC = VTH− − 0.1V), preventing false assertions during switching noise or ESD-induced dips.
Is MAX6463UR18+T compatible with lead-free PCB assembly processes?
Yes-MAX6463UR18+T uses lead-free packaging (denoted by the "+T" suffix) and is qualified for standard Pb-free reflow profiles per JEDEC J-STD-020. Its SOT23-3 package supports peak temperatures up to +260°C and is rated MSL1, eliminating bake requirements prior to assembly.
MAX6463UR18+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.8V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 14µs Typical Propagation Delay
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6463UR18+T FAQ
1.How can I place an order for MAX6463UR18+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6463UR18+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 MAX6463UR18+T reliable?
The price and inventory of MAX6463UR18+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6463UR18+T is usually 5 days.
3.What payment methods are accepted for MAX6463UR18+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6463UR18+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6463UR18+T?
MAX6463UR18+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6463UR18+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 MAX6463UR18+T?
For technical support, including MAX6463UR18+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6463UR18+T requirements.
6.How does Aetrix verify that MAX6463UR18+T is sourced from the original manufacturer or authorized distributors?
All MAX6463UR18+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 MAX6463UR18+T meets industry standards.
7.What is the process for return or replacement of MAX6463UR18+T?
All MAX6463UR18+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6463UR18+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 MAX6463UR18+T part is unused and in its original packaging.
Return procedure for MAX6463UR18+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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