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Analog Devices Inc./Maxim Integrated MAX6463UR46+T
- Part No.:
- MAX6463UR46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6463UR46+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,277
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Product details
Overview
MAX6463UR46+T from Maxim Integrated is an ultra-low-power voltage detector with active-low open-drain output, 4.6V lower trip threshold (VTH−), ±2.5% threshold accuracy over −40°C to +125°C, 17µs propagation delay, and 1.0µA supply current at 3.6V - used for precision battery monitoring and noise-immune µP reset in portable medical devices and cellular phones.
For engineers reviewing the MAX6463UR46+T datasheet, MAX6463UR46+T pinout, MAX6463UR46+T application, or MAX6463UR46+T equivalent, key selection criteria include its factory-set 4.6V detection threshold, SC70-3/SOT23-3 package compatibility, open-drain output requiring external pull-up, and immunity to short VCC transients up to 20µs at 100mV overdrive.
Technical Context
The MAX6463UR46+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 4.6V (min 4.485V, max 4.715V at −40°C to +125°C) and VTH+ = VTH− × 1.05, delivering 5% internal hysteresis to prevent chatter near threshold. It operates across 1.2V to 6.0V supply range and asserts output low when VCC falls below VTH−, holding low until VCC rises above VTH+.
No external components are required: the device integrates hysteresis, temperature-stable thresholding, and transient immunity without trimming or calibration. Its open-drain output supports logic-level translation by connecting the pull-up to any voltage rail from 0V to 6V, enabling interface with systems operating at different supply voltages than VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH− Threshold | 4.600V (typ), 4.485V–4.715V (min/max over −40°C to +125°C); enables precise 4.6V brown-out detection for Li+ battery systems. |
| Supply Current | 1.0µA (typ at 3.6V, −40°C to +125°C); extends battery life in always-on monitoring applications. |
| Propagation Delay | 17µs (VCC falling at 10mV/µs); ensures fast response to supply collapse without false triggering on noise. |
| Threshold Hysteresis | 5% (VHYST = [(VTH+) − (VTH−)] / VTH− × 100%); eliminates output oscillation during slow-rising/falling VCC transitions. |
| Output Type | Active-low open-drain; requires external pull-up, allowing flexible logic-level interfacing up to 6V. |
| Operating Temp | −40°C to +125°C; qualified for automotive cabin, industrial, and portable medical environments. |
| Package | SOT23-3; 2.92mm × 1.3mm footprint, compatible with high-density PCB layouts. |
Pinout & Package
SOT23-3 package: 3-pin surface-mount, moisture-sensitive level 1, lead-free (RoHS-compliant), rated for −40°C to +125°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Active-low open-drain output; sinks current when asserted; requires external pull-up resistor for logic-high state. |
| 2 | GND | Ground reference for internal circuitry and output stage; must be connected to system ground plane. |
| 3 | VCC | Supply voltage input and monitored voltage source; operates from 1.2V to 6.0V; powers internal bandgap and comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA supply current at 3.6V enables >10-year battery life in coin-cell-powered devices. |
| Factory-trimmed VTH− | 4.6V threshold with ±2.5% accuracy over full temperature range eliminates manual calibration. |
| Internal 5% hysteresis | Prevents output chatter during marginal VCC conditions without external RC network. |
| Transient immunity | Immune to VCC glitches ≤20µs duration at 100mV overdrive - critical for noisy DC/DC converter outputs. |
| Logic-level translation | Open-drain output allows pull-up to 0–6V rail, enabling interface with 1.8V, 3.3V, or 5V microcontrollers. |
Applications
| Portable Medical Sensors | Li+ Battery-Powered IoT Nodes |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable low-voltage shutdown before battery depletion. IC Role / Device Role / Timing Role: Voltage detector asserting reset signal to MCU when battery drops below 4.6V, preventing data corruption during brown-out. Use Value: 1.0µA quiescent current extends operational life beyond 3 years; ±2.5% threshold accuracy ensures consistent shutdown across temperature extremes. |
Use Scenario: Wireless environmental sensor node using single-cell Li+ battery and BLE SoC, needing deterministic power-fail indication. IC Role / Device Role / Timing Role: Monitors battery voltage and triggers controlled firmware shutdown via open-drain interrupt to BLE controller. Use Value: Open-drain output pulled to 3.3V logic rail enables direct connection to BLE SoC's wake-up pin without level shifter. |
| Industrial Handheld Terminals | Automotive Cabin Electronics |
Use Scenario: Ruggedized barcode scanner operating in warehouses with wide ambient temperature swings (−20°C to +70°C). IC Role / Device Role / Timing Role: Supervises main 3.3V rail derived from buck converter; asserts reset if input collapses due to load dump or cold start. Use Value: −40°C to +125°C rating guarantees function across storage and operation; 17µs delay ensures timely reset before logic state corruption. |
Use Scenario: In-cabin infotainment display module powered from vehicle 12V system via LDO, subject to load-dump transients. IC Role / Device Role / Timing Role: Detects undervoltage on 5.0V LDO output to initiate graceful UI shutdown before display artifacts occur. Use Value: Immunity to ≤20µs transients prevents spurious resets during alternator switching events; 4.6V threshold aligns with automotive 5V rail brown-out spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB46DBZR | 4.6V threshold, push-pull active-low output, 0.5µA ICC, SOT23-3 package. | No open-drain flexibility; fixed 3.0V–5.5V VCC range; lacks transient immunity specs. | Select when lowest possible ICC is critical and logic-level translation is unnecessary. |
| TPS3808G33DBVR | 3.3V threshold (not 4.6V), adjustable via external resistor, 2.5µA ICC, SOT23-6 package. | Requires external resistor network; larger footprint; not factory-trimmed for 4.6V. | Select only if threshold adjustment is needed and board space permits SOT23-6. |
Compared with TLV803EB46DBZR and TPS3808G33DBVR, the MAX6463UR46+T uniquely combines factory-set 4.6V detection, open-drain output for multi-rail interfacing, 1.0µA ICC, and documented 20µs transient immunity - making it optimal for space-constrained, battery-critical designs requiring precise brown-out response without external components.
Availability
MAX6463UR46+T is available at Aetrix Electronics and suitable for portable medical sensors, Li+ battery-powered IoT nodes, and industrial handheld terminals requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6463UR46+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, sensing, and interface applications, with emphasis on low-power, high-reliability solutions for demanding environments.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power voltage supervision in battery-critical systems - prioritizing sub-µA current, factory-trimmed thresholds, and robust transient immunity without external components.
FAQ
What is the exact voltage threshold of MAX6463UR46+T?
The MAX6463UR46+T has a factory-set lower trip threshold (VTH−) of 4.600V (typical), with guaranteed range of 4.485V to 4.715V over −40°C to +125°C. The upper threshold (VTH+) is VTH− × 1.05, resulting in 4.735V (typ), providing 5% hysteresis to prevent output oscillation. This specification is confirmed in Table 1a of the MAX6461–MAX6466 datasheet.
Does MAX6463UR46+T require external components to operate?
No, the MAX6463UR46+T requires no external components for basic voltage detection functionality. Its internal bandgap reference, comparator, trimmed resistor network, and 5% hysteresis are fully integrated. However, because it features an open-drain output, an external pull-up resistor is mandatory to establish a valid logic-high state on the OUT pin.
What package type does MAX6463UR46+T use, and is it RoHS-compliant?
The MAX6463UR46+T uses the SOT23-3 package (2.92mm × 1.3mm, 0.95mm height), specified for operation from −40°C to +125°C. It is supplied in lead-free (RoHS-compliant) packaging, indicated by the "+T" suffix per Maxim's ordering convention - replacing "-T" with "+T" denotes lead-free termination.
How does MAX6463UR46+T handle short voltage transients on VCC?
The MAX6463UR46+T is designed to ignore short VCC transients: the datasheet specifies immunity to glitches ≤20µs in duration when the overdrive ((VTH−) − VCC) is 100mV. This characteristic is validated in the "Maximum VCC Transient Duration vs. VTH− Threshold Overdrive" graph (toc04), ensuring reliable operation in noisy power environments like DC/DC converter outputs.
Can MAX6463UR46+T interface with a 1.8V microcontroller while monitoring a 4.2V Li+ battery?
Yes. The MAX6463UR46+T's open-drain OUT pin can be pulled up to 1.8V (or any voltage from 0V to 6V), independent of its VCC supply (which connects to the 4.2V battery). When VCC drops below 4.485V, OUT sinks current, pulling the 1.8V rail low - enabling direct, level-shifted reset signaling to the 1.8V MCU without additional circuitry.
MAX6463UR46+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.6V
- 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
MAX6463UR46+T FAQ
1.How can I place an order for MAX6463UR46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6463UR46+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 MAX6463UR46+T reliable?
The price and inventory of MAX6463UR46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6463UR46+T is usually 5 days.
3.What payment methods are accepted for MAX6463UR46+T?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6463UR46+T?
MAX6463UR46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6463UR46+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 MAX6463UR46+T?
For technical support, including MAX6463UR46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6463UR46+T requirements.
6.How does Aetrix verify that MAX6463UR46+T is sourced from the original manufacturer or authorized distributors?
All MAX6463UR46+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 MAX6463UR46+T meets industry standards.
7.What is the process for return or replacement of MAX6463UR46+T?
All MAX6463UR46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6463UR46+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 MAX6463UR46+T part is unused and in its original packaging.
Return procedure for MAX6463UR46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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