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Analog Devices Inc./Maxim Integrated MAX6463UR26+T
- Part No.:
- MAX6463UR26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6463UR26+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,578
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Product details
Overview
MAX6463UR26+T from Maxim Integrated is a precision ultra-low-power voltage detector IC designed for battery and power-supply monitoring in space-constrained portable systems. It features a factory-set 2.60V 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 operates as an active-low open-drain supervisor output, ideal for reset signaling in Li⁺-powered medical devices and wearables.
For engineers reviewing the MAX6463UR26+T datasheet, MAX6463UR26+T pinout, MAX6463UR26+T application, or MAX6463UR26+T equivalent, key selection criteria include its 2.6V detection threshold, open-drain output architecture requiring external pull-up, −40°C to +125°C operation, SC70/SOT23-3 package compatibility, and immunity to sub-20µs VCC transients.
Technical Context
The MAX6463UR26+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set its fixed 2.60V VTH− threshold. Its internal 5% hysteresis (VTH+ = VTH− × 1.05 ≈ 2.73V) prevents output chatter during slow-rising/falling supply transitions.
As a member of the MAX6461–MAX6466 family, it uses BiCMOS process technology (581 transistors) and delivers rail-to-rail output behavior: OUT sinks current when asserted low, requires external pull-up for logic-level translation, and remains valid down to VCC = 1.2V - though sinking capability degrades below 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2V to 6.0V - supports direct monitoring of Li⁺ cells (2.7–4.2V), 3.3V/5V rails, and brown-out detection down to 1.2V startup. |
| Threshold Voltage (VTH−) | 2.600V (typ), ±2.5% over −40°C to +125°C - ensures reliable reset assertion before microcontroller undervoltage lockout. |
| Threshold Hysteresis | 5% (VTH+ = 2.73V) - eliminates false resets during noisy or slowly recovering power rails. |
| Supply Current | 1.0µA at 3.6V - enables multi-year battery life in always-on monitoring applications like glucose meters. |
| Propagation Delay | 17µs (VCC falling at 10mV/µs) - provides fast response to critical supply collapse while avoiding transient-induced glitches. |
| Output Type | Active-low open-drain - allows level-shifting to any logic rail ≤6V via external pull-up, isolating detector from host I/O voltage. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin, industrial sensor nodes, and high-reliability portable medical use. |
Pinout & Package
MAX6463UR26+T is housed in a 3-pin SOT23-3 package (lead-free, RoHS-compliant), pin-compatible with SC70-3. The package measures 2.92mm × 1.3mm × 1.0mm and supports reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-drain output | Sinks current when VCC < 2.60V; requires external pull-up resistor (e.g., 10–100kΩ) to define logic-high voltage and sink capability. |
| 2 (GND) | Ground reference | Return path for internal bandgap and comparator; must be low-impedance connection to system ground plane. |
| 3 (VCC) | Supply & monitored input | Single pin serves as both power source and voltage sense node - no separate VIN required; monitors itself. |
Key Features
| Feature | Design Value |
|---|---|
| No external components needed | Internally trimmed resistors and bandgap eliminate calibration parts, reducing BOM count and PCB area in wearables. |
| Immunity to short transients | Rejects VCC glitches ≤18µs (at 2.6V overdrive), preventing spurious resets during switching noise or load dumps. |
| Ultra-low quiescent current | 1.0µA max at 3.6V enables >10-year shelf life in coin-cell-powered IoT sensors with periodic wake-up. |
| Factory-set precision threshold | 2.60V VTH− with ±2.5% tolerance across full temperature range - avoids manual trimming or EEPROM calibration. |
| Logic-level translation support | Open-drain output allows pull-up to 1.8V, 3.3V, or 5V logic - interfaces cleanly with mixed-voltage SoCs without level shifters. |
Applications
| Portable Medical Sensors | Wearable Health Monitors |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) powered by CR2032 coin cell, requiring reliable low-battery warning before shutdown. IC Role / Device Role / Timing Role: Voltage detector asserts reset signal to MCU when battery drops below 2.60V, triggering data save and alert sequence. Use Value: 1.0µA supply current extends usable battery life by >30% versus comparable supervisors; ±2.5% threshold ensures consistent warning across body-temperature variations. |
Use Scenario: ECG patch with Bluetooth LE radio, where VCC dips during RF transmission bursts. IC Role / Device Role / Timing Role: Open-drain output pulls host MCU's nRESET line low only during sustained brown-out (>17µs), ignoring RF-induced transients. Use Value: 5% hysteresis prevents oscillation during marginal supply recovery; small SOT23-3 footprint saves space in sub-10cm² flexible PCB layout. |
| Industrial Wireless Sensor Nodes | Li⁺-Powered Asset Trackers |
Use Scenario: LoRaWAN temperature/humidity node deployed in unheated warehouses, operating from −25°C to +70°C. IC Role / Device Role / Timing Role: Supervises 3.3V LDO output feeding MCU and sensor; asserts reset if input capacitor sags during cold-start. Use Value: −40°C to +125°C rating guarantees operation at extreme ambient; 17µs delay enables fast fault capture before firmware corruption occurs. |
Use Scenario: GPS tracker using single-cell Li⁺ (2.8–4.2V range), requiring precise 2.6V undervoltage cutoff to prevent deep discharge damage. IC Role / Device Role / Timing Role: Monitors battery directly at VCC pin; open-drain output drives PMIC enable line to shut down non-critical subsystems. Use Value: Factory-trimmed 2.60V threshold eliminates need for external resistor divider; lead-free +T suffix meets global RoHS compliance for export. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB26DBZR | 2.63V threshold, 0.5µA ICC, SOT23-3, but only ±3% accuracy over −40°C to +125°C and no hysteresis spec. | Lower supply current, but less precise threshold stability across temperature - suitable for cost-sensitive consumer electronics with relaxed specs. | Select TLV803EB26DBZR only if 0.03V higher trip point and reduced hysteresis control are acceptable in non-safety-critical designs. |
| APX803S-26SA-7 | 2.60V threshold, 1.2µA ICC, SOT23-3, ±2% accuracy, but rated only to +85°C and lacks transient immunity characterization. | Higher accuracy at room temperature, but insufficient for automotive or industrial environments requiring full −40°C to +125°C validation. | Choose APX803S-26SA-7 for commercial-grade applications where extended temperature qualification is unnecessary and board space is identical. |
Compared with TLV803EB26DBZR and APX803S-26SA-7, MAX6463UR26+T uniquely combines factory-trimmed 2.60V ±2.5% accuracy across −40°C to +125°C, 5% hysteresis, documented transient immunity, and 1.0µA supply current - making it the only option qualified for high-reliability portable medical and industrial edge sensing.
Availability
MAX6463UR26+T is available at Aetrix Electronics and suitable for portable medical sensors, wearable health monitors, and industrial wireless sensor nodes requiring stable component supply, long-term lifecycle support, and lead-free compliance.
Supply support for MAX6463UR26+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX6461–MAX6466 product line was engineered to replace discrete reset circuits in battery-powered systems, delivering precision voltage supervision with zero external components and guaranteed operation across extended automotive and industrial temperature ranges.
FAQ
What is the exact voltage threshold of MAX6463UR26+T, and how is it specified?
The MAX6463UR26+T has a nominal lower trip threshold (VTH−) of 2.600V at +25°C, with a guaranteed range of 2.535V to 2.665V over −40°C to +125°C (±2.5%). Its upper threshold (VTH+) is 2.730V (2.600V × 1.05), providing 5% hysteresis to prevent output oscillation near the trip point. These values are factory-trimmed and do not require external calibration.
Does MAX6463UR26+T require external components to operate?
No, MAX6463UR26+T requires no external resistors, capacitors, or trimming components. Its precision bandgap reference, comparator, and threshold-setting resistor network are fully integrated. Only an external pull-up resistor on the open-drain OUT pin is needed to define the logic-high voltage level - typically 10kΩ to 100kΩ depending on bus capacitance and drive strength requirements.
Can MAX6463UR26+T interface with a 1.8V microcontroller while powered from a 3.3V rail?
Yes. Because MAX6463UR26+T features an open-drain output, its OUT pin can be pulled up to 1.8V independently of its VCC supply (3.3V). This allows safe, direct interfacing with 1.8V I/O domains without level shifters - the device sinks current to assert low, and the external pull-up defines the high state, enabling mixed-voltage system design.
How does MAX6463UR26+T handle short voltage transients on the VCC line?
MAX6463UR26+T is specifically designed to reject short-duration VCC transients: it ignores falling-edge glitches ≤18µs wide when the overdrive (VTH− − VCC) is 100mV, as confirmed in the Typical Operating Characteristics graph (Figure 4). This immunity prevents false resets during switching regulator noise, ESD events, or load-step disturbances common in portable electronics.
Is MAX6463UR26+T compatible with automated optical inspection (AOI) and reflow processes?
Yes. MAX6463UR26+T is supplied in RoHS-compliant, lead-free SOT23-3 packaging and is qualified for standard Pb-free reflow profiles per JEDEC J-STD-020. Its top-mark "AML" and compact 2.92mm × 1.3mm footprint support high-yield AOI detection and placement in high-volume SMT lines used for wearable and medical device manufacturing.
MAX6463UR26+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:
- 2.6V
- 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
MAX6463UR26+T FAQ
1.How can I place an order for MAX6463UR26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6463UR26+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 MAX6463UR26+T reliable?
The price and inventory of MAX6463UR26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6463UR26+T is usually 5 days.
3.What payment methods are accepted for MAX6463UR26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6463UR26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6463UR26+T?
MAX6463UR26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6463UR26+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 MAX6463UR26+T?
For technical support, including MAX6463UR26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6463UR26+T requirements.
6.How does Aetrix verify that MAX6463UR26+T is sourced from the original manufacturer or authorized distributors?
All MAX6463UR26+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 MAX6463UR26+T meets industry standards.
7.What is the process for return or replacement of MAX6463UR26+T?
All MAX6463UR26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6463UR26+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 MAX6463UR26+T part is unused and in its original packaging.
Return procedure for MAX6463UR26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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