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Analog Devices Inc./Maxim Integrated MAX6377XR26
- Part No.:
- MAX6377XR26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6377XR26.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:1,851
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Product details
Overview
MAX6377XR26 from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.63V threshold (±2.5% over temperature), 500nA supply current, and operates down to 1V VCC. It asserts OUT low when VCC falls below threshold and is used in portable equipment power sequencing and microcontroller reset supervision.
For engineers reviewing the MAX6377XR26 datasheet, MAX6377XR26 pinout, MAX6377XR26 application, or MAX6377XR26 equivalent, this page delivers verified technical context, pin-level design meaning, real-world use cases, and validated alternative options - all grounded in Maxim's official specifications for the SC70-3 packaged device.
Technical Context
The MAX6377XR26 implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.63V detection threshold. Its open-drain output requires an external pull-up and remains low during undervoltage conditions, supporting flexible logic interfacing up to 5.5V.
It ignores fast VCC transients (e.g., ≤20µs at 20mV overdrive) and guarantees correct output state down to 1V VCC. Threshold hysteresis is 9.5mV, and propagation delay is 6.3µs (falling edge) at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal, ±2.5% over -40°C to +85°C - ensures reliable brownout detection across industrial temperature range |
| Supply Current | 500nA typical - enables multi-year battery life in coin-cell–powered devices |
| Output Type | Active-low, open-drain - allows wired-OR configuration and level-shifting via external pull-up |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep discharge and across diverse supply rails |
| Propagation Delay | 6.3µs (falling), 9.5µs (rising) - provides deterministic timing for system reset assertion |
| Threshold Hysteresis | 9.5mV - prevents chatter during slow VCC recovery near trip point |
| Tempco | 40ppm/°C - limits drift-induced false triggers in thermally varying environments |
Pinout & Package
MAX6377XR26 is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained portable designs. The package is lead-free compatible and supplied in tape-and-reel format.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SC70) | GND | Ground reference for internal bandgap and comparator - must be low-impedance connection to system ground plane |
| 2 (SC70) | OUT | Open-drain active-low output - sinks current when asserted; requires external pull-up resistor to define logic-high voltage |
| 3 (SC70) | VCC | Supply input - powers internal circuitry and defines monitored rail; valid from 1.2V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA enables >10-year shelf life in lithium primary battery applications |
| No external components | Internally trimmed threshold eliminates calibration resistors and reduces BOM count |
| Transient immunity | Rejects VCC glitches ≤20µs (at 20mV overdrive), preventing spurious resets |
| 1V minimum VCC operation | Ensures valid output state even during deep battery discharge or cold-start conditions |
| ±2.5% threshold accuracy | Guaranteed over full temperature range - eliminates need for margin-based design derating |
Applications
| Portable Medical Sensor | Industrial IoT Node |
|---|---|
|
Use Scenario: Coin-cell–powered wearable ECG sensor monitors battery voltage and triggers graceful shutdown before data corruption. IC Role / Device Role / Timing Role: Voltage detector supervising 3.0V regulated rail; asserts reset to MCU when VBAT drops below 2.63V. Use Value: 500nA quiescent current extends operational lifetime by >3 years versus µA-class alternatives. |
Use Scenario: Battery-backed wireless sensor node performs periodic measurements and transmits only on stable power. IC Role / Device Role / Timing Role: Active-low reset supervisor for ARM Cortex-M0+ MCU; holds processor in reset until 3.3V rail stabilizes above 2.63V. Use Value: Open-drain output interfaces directly to 1.8V I/O domain via 10kΩ pull-up, eliminating level-shifter IC. |
| Smart Meter Backup Supply | USB-C Power Bank |
|
Use Scenario: Supercapacitor-backed smart meter retains timekeeping and memory during AC mains failure. IC Role / Device Role / Timing Role: Monitors supercap voltage decay; asserts interrupt to backup controller when falling below 2.63V. Use Value: Guaranteed operation down to 1V VCC ensures detection continues through final capacitor discharge phase. |
Use Scenario: Li-ion power bank uses dual-rail architecture (5V USB output + 3.3V system control); monitors 3.3V LDO output. IC Role / Device Role / Timing Role: Undervoltage lockout (UVLO) signal generator for system power manager IC. Use Value: 9.5mV hysteresis prevents oscillation during LDO dropout recovery, ensuring clean power-state transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EC26DBZR | 2.63V threshold, 350nA ICC, SOT23-3, push-pull active-low output | Requires no pull-up; incompatible with wired-OR or multi-source reset buses | Select when board layout prohibits external pull-up or when driving high-capacitance reset lines directly |
| APX803S-26SA-7 | 2.63V threshold, 600nA ICC, SOT23-3, open-drain active-low output, same pinout as MAX6377XR26 | Identical functional behavior and pin compatibility; slightly higher ICC increases battery load | Drop-in replacement where Maxim supply continuity is constrained; verify 600nA ICC meets battery life target |
Compared with TLV803EC26DBZR and APX803S-26SA-7, the MAX6377XR26 offers optimal trade-off between ultra-low ICC (500nA), open-drain flexibility, and SC70 footprint - critical for miniaturized, long-life designs where board area and leakage budget are tightly coupled.
Availability
MAX6377XR26 is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT nodes, smart meter backup supplies, and USB-C power banks requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6377XR26 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 - serving industrial, medical, and communications markets.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage monitoring in battery-critical systems, prioritizing nanoscale ICC, factory-trimmed accuracy, and transient-immune reset generation.
FAQ
What is the exact reset threshold voltage of MAX6377XR26 and how stable is it over temperature?
The MAX6377XR26 has a nominal reset threshold of 2.63V, with guaranteed accuracy of ±2.5% over the full -40°C to +85°C operating range. Its 40ppm/°C tempco ensures minimal drift, and electrical characteristics confirm threshold stability even at temperature extremes - making MAX6377XR26 suitable for applications where precise brownout detection is mission-critical.
Does MAX6377XR26 require an external pull-up resistor, and what value is recommended?
Yes, MAX6377XR26 features an open-drain output and requires an external pull-up resistor. A 10kΩ resistor to 3.3V or 5V is typical; selection balances rise time (lower R) against leakage current (higher R). The MAX6377XR26 datasheet specifies that VOL ≤0.4V at ISINK = 100µA, confirming compatibility with standard CMOS logic thresholds.
Can MAX6377XR26 operate reliably below 2.0V VCC, and what is its minimum functional supply voltage?
Yes, MAX6377XR26 is fully specified to operate down to 1.2V VCC and guarantees correct output logic state (active-low assertion when VCC < VTH) down to 1.0V. This capability is explicitly confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables - enabling MAX6377XR26 use in deeply discharged battery scenarios where other detectors fail.
How does MAX6377XR26 handle short voltage transients on the VCC line?
MAX6377XR26 incorporates built-in transient immunity: it ignores negative-going VCC glitches ≤20µs in duration when overdriven by 20mV (i.e., VCC dips to VTH − 20mV). This behavior is characterized in the Typical Operating Characteristics and prevents false resets caused by switching noise or load transients - a key reliability feature of the MAX6377XR26 design.
Is MAX6377XR26 pin-compatible with other devices in the MAX6375–MAX6380 family, and which packages are supported?
MAX6377XR26 uses the SC70-3 package (pin 1 = GND, pin 2 = OUT, pin 3 = VCC), matching the pinout of all MAX6375–MAX6380 XR-series variants. It is not pin-compatible with UR-series (SOT23-3) versions due to different pin numbering - though both share identical terminal functions. Always verify package marking and footprint before substitution.
MAX6377XR26 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6377XR26 FAQ
1.How can I place an order for MAX6377XR26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6377XR26 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 MAX6377XR26 reliable?
The price and inventory of MAX6377XR26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6377XR26 is usually 5 days.
3.What payment methods are accepted for MAX6377XR26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6377XR26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6377XR26?
MAX6377XR26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6377XR26 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 MAX6377XR26?
For technical support, including MAX6377XR26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6377XR26 requirements.
6.How does Aetrix verify that MAX6377XR26 is sourced from the original manufacturer or authorized distributors?
All MAX6377XR26 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 MAX6377XR26 meets industry standards.
7.What is the process for return or replacement of MAX6377XR26?
All MAX6377XR26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6377XR26, 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 MAX6377XR26 part is unused and in its original packaging.
Return procedure for MAX6377XR26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6377XR26 Tags
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MIC826SYMT-TR
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