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Analog Devices Inc./Maxim Integrated MAX6461XR26+T
- Part No.:
- MAX6461XR26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6461XR26+T.pdf
- Description:
- IC VOLT DETECTOR LP SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,687
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Product details
Overview
MAX6461XR26+T from Maxim Integrated is a precision ultra-low-power voltage detector IC designed for battery and power-supply monitoring in space-constrained, low-current 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 is used in portable medical devices and cellular phones to ensure reliable power-on reset and brownout detection.
For engineers reviewing the MAX6461XR26+T datasheet, MAX6461XR26+T pinout, MAX6461XR26+T application, or MAX6461XR26+T equivalent, key selection criteria include its SC70-3 package, active-low push-pull output, 2.6V detection threshold with 5% hysteresis, and guaranteed operation across automotive-grade temperature range without external components.
Technical Context
The MAX6461XR26+T implements a precision bandgap reference and comparator-based detection architecture with internally trimmed resistor networks to set VTH− = 2.600V (typ) and VTH+ = 2.730V (typ), yielding 5% hysteresis. Its internal hysteresis prevents output chatter during slow or noisy VCC transitions near threshold.
This device belongs to the MAX6461–MAX6466 family of voltage detectors and µP supervisory circuits; the MAX6461 variant provides only voltage detection (no reset timeout), with propagation delay specified at 17µs (VCC falling) and 100µs (VCC rising), and operates from 1.2V to 6.0V supply while consuming ≤3.5µA at +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2V to 6.0V - supports direct monitoring of Li+ batteries, 1.8V/2.5V/3.3V/5V rails without level shifting. |
| Detection Threshold (VTH−) | 2.600V (typ) at +25°C, 2.535V to 2.665V over −40°C to +125°C - enables precise 2.6V brownout detection for 2.8V nominal systems. |
| Threshold Hysteresis | 5% (VTH+ = VTH− × 1.05) - eliminates false triggering on supply ripple or noise near trip point. |
| Supply Current | 1.0µA (typ) at 3.6V, +25°C; ≤3.5µA at +125°C - extends battery life in always-on monitoring applications. |
| Propagation Delay | 17µs (VCC falling), 100µs (VCC rising) - ensures fast fault response while avoiding transient-induced false asserts. |
| Output Type | Active-low push-pull - drives logic inputs directly without pull-up resistor; sinks ≥1mA at 0.3V VOL. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial, and extended-range portable equipment. |
Pinout & Package
MAX6461XR26+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for high-density PCB layouts in portable electronics. Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Active-low push-pull output | Asserts low when VCC falls below 2.60V; remains low until VCC rises above 2.73V; drives CMOS/TTL loads directly. |
| GND (Pin 2) | Ground reference | Return path for internal bandgap, comparator, and output stage; must be connected to system ground plane. |
| VCC (Pin 3) | Supply and monitored input | Single terminal supplies IC power and serves as the voltage being monitored; no separate sense pin required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA at 3.6V enables >10-year battery life in coin-cell-powered devices like glucose meters. |
| Factory-trimmed 2.60V threshold | Eliminates manual calibration or external resistor dividers-reduces BOM count and layout area. |
| Internal 5% hysteresis | Prevents oscillation during slow-rising/falling VCC transitions, critical for stable reset assertion in noisy environments. |
| −40°C to +125°C operation | Meets AEC-Q100 stress test requirements for automotive cabin and industrial control applications. |
| No external components required | Reduces design risk, improves long-term reliability, and accelerates time-to-market for compact wearable designs. |
Applications
| Precision Battery Monitoring | Load Switching / Power Sequencing |
|---|---|
Use Scenario: Monitoring Li+ battery discharge in a handheld ultrasound probe to trigger shutdown before deep discharge. IC Role / Device Role / Timing Role: Voltage detector asserting reset signal when cell voltage drops below 2.60V, preventing data corruption and battery damage. Use Value: Enables safe cutoff at precisely 2.6V with ±2.5% accuracy over full temperature range, extending usable battery capacity. |
Use Scenario: Enabling controlled power-up sequence for dual-rail FPGA core/I/O banks in a portable diagnostic imager. IC Role / Device Role / Timing Role: Supervises 2.5V rail and triggers enable signal only after stable voltage is confirmed, preventing latch-up. Use Value: 17µs detection latency ensures rapid response to undervoltage events without compromising sequencing timing margins. |
| Noise-Immune µP Reset Circuits | Portable Medical Devices |
Use Scenario: Providing clean, chatter-free reset to an ARM Cortex-M4 microcontroller in an ECG patch worn during exercise. IC Role / Device Role / Timing Role: Generates glitch-immune active-low reset pulse using internal hysteresis and 5% threshold margin. Use Value: Immunity to sub-10µs transients (per Typical Operating Characteristics) avoids spurious resets during motion-induced supply noise. |
Use Scenario: Ensuring reliable startup and brownout recovery in a Class II FDA-cleared insulin pump with CR2032 backup. IC Role / Device Role / Timing Role: Monitors main 3.3V supply and asserts reset if voltage sags below 2.60V due to motor load surge. Use Value: 1.0µA ICC allows continuous supervision without impacting 10-year shelf-life requirement for sealed medical units. |
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, 0.8µA ICC, SOT23-3, but only ±3% accuracy over −40°C to +85°C (not +125°C). | Limited to commercial-temperature consumer devices; unsuitable for under-hood or sterilized medical enclosures. | Select TLV803EB26DBZR only if operating temperature stays ≤+85°C and tighter hysteresis is not required. |
| TPS3801K26DBVR | 2.60V threshold, 1.1µA ICC, SOT23-3, ±1.5% accuracy, but no internal hysteresis - requires external resistor network. | Increases BOM cost and PCB area; introduces calibration drift risk over temperature and lifetime. | Choose TPS3801K26DBVR only when higher initial accuracy outweighs added complexity and long-term stability concerns. |
Compared with TLV803EB26DBZR and TPS3801K26DBVR, MAX6461XR26+T delivers guaranteed ±2.5% accuracy across −40°C to +125°C, integrated 5% hysteresis, and true zero-component operation - making it the optimal choice for ruggedized portable and industrial applications where reliability and simplicity are non-negotiable.
Availability
MAX6461XR26+T is available at Aetrix Electronics and suitable for portable medical devices, cellular phones, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6461XR26+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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-critical applications - prioritizing minimal current draw, factory-trimmed thresholds, and robust operation in harsh thermal environments.
FAQ
What is the exact voltage threshold of MAX6461XR26+T?
The MAX6461XR26+T has a factory-set lower trip threshold (VTH−) of 2.600V (typical) at +25°C, with guaranteed range of 2.535V to 2.665V across −40°C to +125°C. Its upper threshold (VTH+) is 2.730V (typ), providing 5% hysteresis. These values are confirmed in Table 1a and Table 1b of the official datasheet.
Does MAX6461XR26+T require external components to operate?
No, MAX6461XR26+T requires no external components. Its precision bandgap reference, comparator, and trimmed resistor network are fully integrated. The SC70-3 package contains only VCC, GND, and active-low push-pull OUT pins - enabling drop-in deployment in space-constrained designs.
What is the supply current of MAX6461XR26+T at elevated temperature?
At +125°C and 5.0V supply, MAX6461XR26+T draws ≤3.5µA (maximum) with output not asserted. At +25°C and 3.6V, typical supply current is 1.0µA. This ultra-low ICC is validated across the full −40°C to +125°C range per Electrical Characteristics table.
Is MAX6461XR26+T pin-compatible with other MAX6461 variants?
Yes, all MAX6461 variants in SC70-3 (e.g., MAX6461XR16+T, MAX6461XR22+T) share identical pinout: Pin 1 = OUT, Pin 2 = GND, Pin 3 = VCC. Threshold differences are implemented internally - allowing direct substitution when only voltage detection level changes.
What output configuration does MAX6461XR26+T use?
MAX6461XR26+T uses an active-low push-pull output stage. When VCC falls below VTH−, OUT drives low (≤0.3V at 1mA sink); when VCC rises above VTH+, OUT drives high (≥0.8×VCC). No external pull-up is needed - unlike open-drain versions in the same family.
MAX6461XR26+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.6V
- Output:
- Push-Pull, Push-Pull
- 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:
- SC-70-3
MAX6461XR26+T FAQ
1.How can I place an order for MAX6461XR26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6461XR26+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 MAX6461XR26+T reliable?
The price and inventory of MAX6461XR26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6461XR26+T is usually 5 days.
3.What payment methods are accepted for MAX6461XR26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6461XR26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6461XR26+T?
MAX6461XR26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6461XR26+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 MAX6461XR26+T?
For technical support, including MAX6461XR26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6461XR26+T requirements.
6.How does Aetrix verify that MAX6461XR26+T is sourced from the original manufacturer or authorized distributors?
All MAX6461XR26+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 MAX6461XR26+T meets industry standards.
7.What is the process for return or replacement of MAX6461XR26+T?
All MAX6461XR26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6461XR26+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 MAX6461XR26+T part is unused and in its original packaging.
Return procedure for MAX6461XR26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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