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Analog Devices Inc./Maxim Integrated MAX6379XR36+T
- Part No.:
- MAX6379XR36+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6379XR36+T.pdf
- Description:
- IC VOLT DETECT LP 3.60V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,792
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Product details
Overview
MAX6379XR36+T from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 3.60V threshold (±2.5% over temperature), 500nA supply current at +25°C, and guaranteed operation down to VCC = 1V. It asserts a logic-high output when VCC falls below threshold and is used in portable equipment power sequencing and Li+-battery voltage supervision.
For engineers reviewing the MAX6379XR36+T datasheet, MAX6379XR36+T pinout, MAX6379XR36+T application, or MAX6379XR36+T equivalent, key selection criteria include its 3.60V trip point, SC70-3 package, active-high push-pull output, transient immunity up to 200µs at 100mV overdrive, and compatibility with 1.2V–5.5V supply rails.
Technical Context
The MAX6379XR36+T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 3.60V detection threshold. Its active-high push-pull output drives high (VOH ≥ 0.8×VCC) when VCC drops below VTH and low (VOL ≤ 0.4V) otherwise, eliminating external pull-up components.
It ignores fast negative-going VCC transients - maximum allowable glitch duration is 200µs at 100mV overdrive - and operates across -40°C to +85°C with ±2.5% threshold accuracy and 40ppm/°C tempco. Propagation delay is 9.5µs (typ) for rising/falling edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.60V (factory-trimmed, ±2.5% over -40°C to +85°C) |
| Supply Current | 500nA at +25°C - enables multi-year battery life in coin-cell applications |
| Output Type | Active-high push-pull - drives high without external pull-up, sinks 1.2mA min |
| VCC Operating Range | 1.2V to 5.5V - supports brown-out detection down to ultralow supply levels |
| Propagation Delay | 9.5µs (typ) - ensures timely reset assertion during supply collapse |
| Threshold Hysteresis | 100mV - prevents chatter near trip point during slow supply recovery |
| Tempco | 40ppm/°C - maintains stable trip point across industrial temperature range |
Pinout & Package
MAX6379XR36+T is housed in a lead-free 3-pin SC70-3 package (2.0mm × 1.25mm × 0.95mm), optimized for space-constrained portable designs. Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC - consistent across all MAX6376/MAX6379 variants in SC70-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Active-high push-pull output | Drives logic-high when VCC < VTH (3.60V); sinks ≥1.2mA, sources ≥500µA |
| 2 (GND) | Ground reference | Return path for internal bandgap and comparator; must be low-impedance |
| 3 (VCC) | Supply input | Monitored voltage rail (1.2V–5.5V); powers internal circuitry and defines output swing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA enables >10-year shelf life in CR2032-powered IoT sensors |
| No external components required | Internally trimmed threshold and reference eliminate calibration resistors and trim pots |
| Transient-immune detection | Rejects glitches ≤200µs at 100mV overdrive - avoids false resets in noisy power rails |
| Guaranteed state down to 1V | Remains functional during deep brown-out, ensuring reliable reset assertion |
| Factory-set precision threshold | 3.60V ±2.5% over full temperature range - no post-manufacture verification needed |
Applications
| Portable Medical Sensors | Wearables Power Sequencing |
|---|---|
Use Scenario: Continuous glucose monitor powered by single CR2032 cell with DC/DC step-up regulator. IC Role / Device Role / Timing Role: Voltage detector supervising regulated 3.3V rail; asserts reset if battery voltage decays below 3.60V threshold. Use Value: Prevents firmware corruption by triggering controlled shutdown before supply collapse, extending usable battery capacity by 8–12%. |
Use Scenario: Smartwatch with dual-rail power system (1.8V core, 3.3V I/O) requiring ordered startup/shutdown. IC Role / Device Role / Timing Role: Active-high supervisor enabling enable signal to 3.3V LDO only after 1.8V rail stabilizes above 3.60V. Use Value: Eliminates need for RC timing networks or microcontroller GPIO supervision, reducing BOM count by two passive components. |
| Asset Tracking Beacons | Industrial Wireless Sensors |
Use Scenario: GPS-enabled BLE beacon operating on primary lithium thionyl chloride (LiSOCl₂) cell with 3.6V nominal output. IC Role / Device Role / Timing Role: Monitors main battery voltage; asserts high-level interrupt to MCU when cell depletes to 3.60V end-of-life threshold. Use Value: Enables accurate remaining-life estimation and graceful data flush before voltage collapse, improving field reliability by >35%. |
Use Scenario: LoRaWAN node deployed in remote pipeline monitoring, powered by solar-charged LiFePO₄ battery (3.2V–3.65V range). IC Role / Device Role / Timing Role: Detects under-voltage condition on 3.3V regulated rail derived from battery; triggers watchdog reset to prevent sensor lockup. Use Value: Maintains deterministic reset behavior despite wide input voltage variation and temperature drift, meeting IEC 61508 SIL-2 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB36DBZR | 3.6V threshold, 350nA supply current, SOT23-3 package, open-drain output | Requires external pull-up; not drop-in compatible due to active-low/open-drain logic | Select when lower quiescent current is critical and system design accommodates pull-up and inverted logic |
| TPS3808G36DBVR | 3.6V threshold, 1.1µA supply current, SOT23-6 package, adjustable delay, push-pull output | Larger footprint, higher IQ, includes programmable reset timeout - adds complexity where simple detection suffices | Choose when reset pulse stretching is required; avoid if minimizing size and power is primary goal |
Compared with TLV803EB36DBZR and TPS3808G36DBVR, MAX6379XR36+T delivers the lowest power (500nA) in the smallest footprint (SC70-3) with native active-high push-pull drive - making it optimal for space- and energy-constrained battery applications where minimal external components and deterministic logic polarity are essential.
Availability
MAX6379XR36+T is available at Aetrix Electronics and suitable for portable medical sensors, wearables power sequencing, and industrial wireless sensors requiring stable component supply, long-term lifecycle support, and lead-free compliance.
Supply support for MAX6379XR36+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 in industrial, automotive, and consumer markets.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage monitoring in battery-critical systems - prioritizing nanoscale quiescent current, factory-trimmed accuracy, and minimal board area over feature expansion.
FAQ
What is the exact reset threshold voltage of MAX6379XR36+T and how stable is it over temperature?
The MAX6379XR36+T has a factory-trimmed nominal reset threshold of 3.60V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). Its temperature coefficient is 40ppm/°C, meaning threshold drift is limited to approximately ±10mV across the entire range - sufficient for precision battery end-of-life detection in portable devices.
Does MAX6379XR36+T require any external components to operate?
No, MAX6379XR36+T requires zero external components. Its precision bandgap reference, comparator, and threshold-setting resistors are fully integrated and factory-trimmed. The active-high push-pull output eliminates the need for an external pull-up resistor - unlike open-drain alternatives - simplifying layout and reducing BOM count.
Can MAX6379XR36+T operate reliably at very low supply voltages?
Yes, MAX6379XR36+T is guaranteed to assert its output correctly for VCC as low as 1.0V. This allows it to remain functional during deep brown-out conditions - for example, detecting final depletion of a LiSOCl₂ cell - and ensures deterministic reset behavior even as the monitored rail collapses.
How does MAX6379XR36+T handle power supply transients or noise on the VCC line?
MAX6379XR36+T incorporates built-in transient immunity: it ignores negative-going VCC glitches up to 200µs in duration when the overdrive (VTH – VCC) is 100mV. This prevents false resets caused by switching noise or load transients, a critical feature in DC/DC converter outputs and motor-driven systems.
What is the output drive capability of MAX6379XR36+T and how does it interface with common logic families?
MAX6379XR36+T features a push-pull output capable of sourcing ≥500µA and sinking ≥1.2mA at VCC ≥ 3.2V. Its VOH reaches ≥0.8×VCC and VOL stays ≤0.4V, ensuring direct compatibility with 1.8V, 3.3V, and 5V CMOS inputs without level-shifting - simplifying integration into mixed-voltage systems.
MAX6379XR36+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6379XR36+T FAQ
1.How can I place an order for MAX6379XR36+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6379XR36+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 MAX6379XR36+T reliable?
The price and inventory of MAX6379XR36+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6379XR36+T is usually 5 days.
3.What payment methods are accepted for MAX6379XR36+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6379XR36+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6379XR36+T?
MAX6379XR36+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6379XR36+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 MAX6379XR36+T?
For technical support, including MAX6379XR36+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6379XR36+T requirements.
6.How does Aetrix verify that MAX6379XR36+T is sourced from the original manufacturer or authorized distributors?
All MAX6379XR36+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 MAX6379XR36+T meets industry standards.
7.What is the process for return or replacement of MAX6379XR36+T?
All MAX6379XR36+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6379XR36+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 MAX6379XR36+T part is unused and in its original packaging.
Return procedure for MAX6379XR36+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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