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Analog Devices Inc./Maxim Integrated MAX6380XR42-T
- Part No.:
- MAX6380XR42-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6380XR42-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,901
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Product details
Overview
MAX6380XR42-T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector with a factory-trimmed threshold of 4.200V ±2.5%, 500nA supply current, and operation down to 1V VCC - used for reliable power-supply monitoring in battery-powered microcontroller reset circuits.
For engineers reviewing the MAX6380XR42-T datasheet, MAX6380XR42-T pinout, MAX6380XR42-T application, or MAX6380XR42-T equivalent, this device serves as a precision, low-quiescent-current supervisor for 3.3V–5V systems requiring glitch-immune reset assertion during brownout conditions.
Technical Context
The MAX6380XR42-T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 4.200V trip point, eliminating external components. Its open-drain output sinks current when VCC falls below threshold and remains valid down to 1V supply.
It features built-in immunity to fast VCC transients (≤140µs at 20mV overdrive), ±2.5% threshold accuracy over –40°C to +85°C, and propagation delay of 9.5µs (typ) on falling VCC - optimized for stable reset generation in portable digital systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.200V ±2.5% at +25°C; ensures accurate brownout detection for 4.2V Li-ion or 3.3V/5V rail supervision |
| Supply Current | 500nA typical; enables multi-year battery life in always-on monitoring applications |
| Output Type | Active-low open-drain; allows flexible pull-up to any logic rail ≤5.5V for interfacing with diverse host controllers |
| Propagation Delay | 9.5µs typical (falling edge); provides fast, deterministic reset assertion during supply collapse |
| Operating Voltage Range | 1.2V to 5.5V VCC; guarantees correct output state even during deep brownout or startup |
| Temperature Range | –40°C to +85°C; qualified for industrial and portable equipment environments |
| Hysteresis | 100mV typical; prevents chatter during slow or noisy supply recovery |
Pinout & Package
MAX6380XR42-T is housed in a 3-pin SC70 package (2.0mm × 1.25mm × 0.9mm), optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator; must be low-impedance connection to system ground plane |
| 2 | OUT | Active-low open-drain output; requires external pull-up resistor to define logic-high level and sink capability |
| 3 | VCC | Supply input; powers internal circuitry and defines monitored voltage rail; supports operation down to 1.2V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery runtime in coin-cell–powered IoT sensors and wearables without compromising supervision reliability |
| ±2.5% threshold accuracy over temperature | Eliminates need for calibration or trimming in production, reducing BOM and test cost |
| Open-drain output with 5.5V tolerance | Enables direct interface to 1.8V, 3.3V, or 5V microcontrollers without level-shifting circuitry |
| 100mV built-in hysteresis | Prevents false resets during marginal supply recovery, improving system robustness in noisy environments |
| No external components required | Reduces footprint, assembly steps, and failure points compared to discrete resistor-divider supervisors |
Applications
| Battery-Powered Microcontroller Reset | Li-ion Battery Voltage Monitoring |
|---|---|
Use Scenario: Supervising VCC of an ARM Cortex-M0+ MCU in a Bluetooth LE sensor node powered by a single-cell Li-ion battery. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset signal to MCU's nRST pin when battery drops below 4.2V, preventing undefined operation. Use Value: Ensures clean, repeatable power-on reset and brownout recovery without software intervention or external RC network. |
Use Scenario: Monitoring cell voltage in a smart battery pack to trigger charge termination or low-battery warning at 4.2V. IC Role / Device Role / Timing Role: Precision threshold detector feeding enable/disable signal to fuel gauge IC or protection FET driver. Use Value: Delivers ±2.5% accuracy across temperature, enabling tighter state-of-charge estimation without calibration drift. |
| Industrial Sensor Node Power Sequencing | Low-Power Wearable System Supervision |
Use Scenario: Controlling power-up sequence of analog front-end and digital baseband ICs in a wireless environmental sensor. IC Role / Device Role / Timing Role: Reset supervisor ensuring downstream ICs remain held in reset until regulated 3.3V rail stabilizes above 4.2V × 0.8 = 3.36V. Use Value: Prevents latch-up or configuration errors caused by out-of-spec power sequencing, verified across –40°C to +85°C. |
Use Scenario: Providing fail-safe reset for an ultra-low-power wearable health monitor using a CR2032 coin cell. IC Role / Device Role / Timing Role: Low-quiescent supervisor asserting reset when supply decays below 4.2V, extending usable battery life by minimizing leakage. Use Value: 500nA ICC enables >10-year shelf life while maintaining guaranteed reset assertion down to 1.2V VCC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB33DBZR | 3.3V fixed threshold, 350nA ICC, SOT23-3, push-pull output | Lower threshold; unsuitable for 4.2V detection; requires different pull-up strategy due to push-pull drive | Select only if system uses 3.3V rail supervision and board layout accommodates push-pull reset signaling |
| TPS3808G33DBVR | 3.3V threshold, 1.1µA ICC, SOT23-6, adjustable delay, open-drain | Higher quiescent current; larger package; includes programmable reset timeout not present in MAX6380XR42-T | Choose when extended reset pulse width or higher drive strength is required; avoid if 500nA ICC is mandatory |
Compared with TLV803EB33DBZR and TPS3808G33DBVR, the MAX6380XR42-T uniquely combines 4.200V precision threshold, 500nA supply current, and SC70 footprint - making it optimal for compact, long-life 4.2V battery supervision where minimal loading and exact trip point are critical.
Availability
MAX6380XR42-T is available at Aetrix Electronics and suitable for battery-powered microcontroller reset, Li-ion voltage monitoring, and industrial sensor node power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for MAX6380XR42-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, mixed-signal, and power-management ICs for industrial, medical, communications, and consumer applications.
The MAX6375–MAX6380 family delivers ultra-low-power, factory-trimmed voltage supervision for portable and battery-critical systems - engineered to replace discrete reset circuits with high accuracy, zero external components, and guaranteed operation down to 1V.
FAQ
What is the exact reset threshold voltage of the MAX6380XR42-T?
The MAX6380XR42-T has a factory-trimmed nominal reset threshold of 4.200V, with ±2.5% accuracy over the full –40°C to +85°C temperature range. At +25°C, the threshold is guaranteed between 4.137V (min) and 4.263V (max), per Table 1 in the datasheet. This precise value makes the MAX6380XR42-T ideal for supervising 4.2V Li-ion battery terminals or 3.3V/5V rails with tight margin requirements.
Does the MAX6380XR42-T require external components to operate?
No, the MAX6380XR42-T requires no external components for basic operation. Its precision bandgap reference, comparator, and threshold-setting resistors are fully integrated and factory-trimmed. Only an external pull-up resistor on the open-drain OUT pin is needed to establish the logic-high level - typically 10kΩ to 100kΩ depending on load capacitance and speed requirements. The MAX6380XR42-T eliminates the need for discrete voltage dividers, capacitors, or trimming potentiometers.
What package type and dimensions does the MAX6380XR42-T use?
The MAX6380XR42-T is supplied in a 3-pin SC70 package (also known as SOT323), measuring 2.0mm × 1.25mm × 0.9mm with a standard pitch of 0.65mm. This ultra-compact outline matches the footprint of competing SOT23-3 devices but offers superior thermal performance and handling characteristics for automated assembly. Pin 1 is GND, pin 2 is OUT, and pin 3 is VCC - consistent across all SC70 variants in the MAX6375–MAX6380 family.
How does the MAX6380XR42-T behave during fast VCC transients?
The MAX6380XR42-T is designed to ignore fast negative-going VCC transients: for example, a 20mV dip below threshold is tolerated for up to ~140µs without triggering output assertion, per the "Maximum Transient Duration vs. Threshold Overdrive" graph. This immunity prevents false resets caused by switching noise or load transients, ensuring robust operation in electrically noisy environments such as motor-driven or RF-intensive systems where the MAX6380XR42-T is commonly deployed.
Can the MAX6380XR42-T operate reliably below 2.0V VCC?
Yes, the MAX6380XR42-T guarantees correct output logic state (active-low when VCC < VTH) down to 1.2V VCC, and functional operation is specified from 1.2V to 5.5V. Even at 1.2V, the internal bandgap reference and comparator remain stable, allowing the MAX6380XR42-T to assert reset during deep brownout conditions - a key advantage over many competitors that fail below 1.8V. This capability is validated across –40°C to +85°C and supports ultra-low-voltage battery end-of-life detection.
MAX6380XR42-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.2V
- 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
MAX6380XR42-T FAQ
1.How can I place an order for MAX6380XR42-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6380XR42-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 MAX6380XR42-T reliable?
The price and inventory of MAX6380XR42-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6380XR42-T is usually 5 days.
3.What payment methods are accepted for MAX6380XR42-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6380XR42-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6380XR42-T?
MAX6380XR42-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6380XR42-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 MAX6380XR42-T?
For technical support, including MAX6380XR42-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6380XR42-T requirements.
6.How does Aetrix verify that MAX6380XR42-T is sourced from the original manufacturer or authorized distributors?
All MAX6380XR42-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 MAX6380XR42-T meets industry standards.
7.What is the process for return or replacement of MAX6380XR42-T?
All MAX6380XR42-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6380XR42-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 MAX6380XR42-T part is unused and in its original packaging.
Return procedure for MAX6380XR42-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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