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Analog Devices Inc./Maxim Integrated MAX6380XR34+T
- Part No.:
- MAX6380XR34+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6380XR34+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,250
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Product details
Overview
MAX6380XR34+T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector designed for precision power-supply monitoring in battery-powered systems. It features a factory-trimmed 3.40V threshold (±2.5% over temperature), 500nA supply current, and operates from 1.2V to 5.5V VCC - enabling reliable brownout detection in portable medical devices and low-power IoT sensors.
For engineers reviewing the MAX6380XR34+T datasheet, MAX6380XR34+T pinout, MAX6380XR34+T application, or MAX6380XR34+T equivalent, key selection criteria include its 3.40V trip point, SC70-3 open-drain output with 100µA sink capability at 1.2V, ±2.5% threshold accuracy across -40°C to +85°C, and immunity to sub-200µs VCC transients at 100mV overdrive.
Technical Context
The MAX6380XR34+T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 3.40V detection threshold. Its open-drain output requires an external pullup and asserts logic low when VCC falls below VTH, remaining valid down to 1V supply.
It rejects fast negative-going VCC transients via internal filtering - maximum allowable glitch duration is ≤200µs at 100mV overdrive - and guarantees correct output state across full industrial temperature range without external components or calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 3.40V nominal (±2.5% over -40°C to +85°C); ensures accurate 3.3V rail monitoring with margin |
| Supply Current | 500nA typical at +25°C; enables multi-year operation on coin-cell batteries |
| Output Type | Active-low open-drain; supports flexible logic-level interfacing up to 5.5V via external pullup |
| VCC Operating Range | 1.2V to 5.5V; functions during deep brownout and across wide input rails |
| Propagation Delay | 9.5µs typical (falling edge); provides timely reset assertion without excessive latency |
| Threshold Hysteresis | 100mV; prevents chatter near trip point during slow VCC recovery |
| Tempco | 40ppm/°C; maintains stable trip point across temperature without drift compensation |
Pinout & Package
MAX6380XR34+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for space-constrained portable designs. The package is lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator; must be low-impedance connection |
| 2 | OUT | Active-low open-drain output; sinks up to 100µA at VCC ≥1.2V; requires external pullup resistor |
| 3 | VCC | Supply input; powers internal circuitry and defines monitored rail; accepts 1.2V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery life in always-on wearables and remote sensors beyond 10 years on CR2032 |
| ±2.5% threshold accuracy over temperature | Eliminates need for system-level calibration in industrial temperature environments |
| Open-drain output with 5.5V-tolerant pullup | Enables direct interface to 1.8V, 3.3V, or 5V microcontrollers without level shifters |
| No external components required | Reduces BOM count and PCB area vs. discrete resistor-divider + comparator solutions |
| Immunity to <200µs VCC transients | Prevents false resets during switching noise or load-dump events in portable power systems |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Continuous glucose monitor powered by single Li-MnO₂ cell with regulated 3.3V rail. IC Role / Device Role / Timing Role: Monitors 3.3V supply and asserts reset to MCU when voltage drops below 3.40V due to battery depletion. Use Value: Prevents data corruption during low-voltage operation while consuming only 500nA - preserving battery capacity for >2 years. |
Use Scenario: Wireless vibration sensor node deployed in factory machinery with intermittent solar charging. IC Role / Device Role / Timing Role: Detects brownout on 3.3V DC/DC output and triggers controlled shutdown before EEPROM write failure. Use Value: Ensures deterministic reset timing (9.5µs delay) and eliminates false triggers from motor-drive EMI transients. |
| Smart Home Battery Remotes | Asset Tracking Tags |
Use Scenario: BLE-enabled thermostat remote using alkaline AA cells with 3.0V–4.5V unregulated input. IC Role / Device Role / Timing Role: Serves as undervoltage lockout (UVLO) to disable RF transmission when battery reaches 3.40V threshold. Use Value: Matches nominal 3.3V system requirement with 100mV hysteresis to prevent oscillation during gradual discharge. |
Use Scenario: GPS asset tracker operating on primary lithium thionyl chloride (LiSOCl₂) cell with 3.6V nominal output. IC Role / Device Role / Timing Role: Provides precise 3.40V reset signal to ARM Cortex-M0+ to halt GPS acquisition before critical voltage collapse. Use Value: Leverages 1.2V minimum operating voltage to extract maximum usable energy from aging LiSOCl₂ cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB34DBZR | 3.4V threshold, SOT23-3, push-pull active-low output; 1.8µA supply current | Higher quiescent current limits use in multi-year battery applications | Preferred where board space allows SOT23 and push-pull simplifies layout |
| APX803S-34SA-7 | 3.4V threshold, SOT23-3, open-drain active-low; 800nA supply current; ±2% accuracy | Slightly higher ICC and tighter accuracy spec increase cost without functional benefit for most designs | Consider if ±2% tolerance is mandated by safety-critical certification |
Compared with TLV803EB34DBZR and APX803S-34SA-7, the MAX6380XR34+T delivers the lowest supply current (500nA) in SC70-3, enabling smallest footprint and longest battery life - critical for ultra-compact, maintenance-free deployments.
Availability
MAX6380XR34+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and smart home battery remotes requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6380XR34+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 high-performance analog and mixed-signal ICs for power, sensing, and connectivity applications - with emphasis on reliability, integration, and low-power innovation.
The MAX6375–MAX6380 family was developed specifically for ultra-low-power voltage monitoring in space- and energy-constrained systems, delivering precision reset functionality without external components or calibration.
FAQ
What is the exact reset threshold voltage of the MAX6380XR34+T?
The MAX6380XR34+T has a factory-trimmed nominal reset threshold voltage of 3.40V, with guaranteed accuracy of ±2.5% over the full industrial temperature range (-40°C to +85°C). This value is confirmed in Table 1 of the official datasheet under suffix "R34", and applies directly to the MAX6380XR34+T device.
Does the MAX6380XR34+T require an external pullup resistor on its OUT pin?
Yes, the MAX6380XR34+T features an open-drain active-low output and requires an external pullup resistor connected between OUT and any logic supply up to 5.5V. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements - no pullup is integrated internally.
Can the MAX6380XR34+T operate reliably below 1.8V?
Yes, the MAX6380XR34+T is fully specified to operate down to 1.2V VCC and guarantees correct output logic state (active-low assertion when VCC < 3.40V) even at 1.2V. This enables use in deeply discharged battery scenarios where other detectors fail.
What is the maximum transient duration the MAX6380XR34+T can ignore at 100mV overdrive?
At 100mV overdrive (i.e., VCC = 3.30V), the MAX6380XR34+T ignores negative-going transients up to 200µs in duration, as shown in Figure MAX6375-04 of the datasheet. This immunity prevents false resets caused by switching regulator noise or ESD-induced dips.
Is the MAX6380XR34+T available in both leaded and lead-free packaging?
Yes, the MAX6380XR34+T is offered in lead-free packaging - indicated by the "+T" suffix per Maxim's ordering convention. The "+T" denotes RoHS-compliant, matte-tin lead finish; standard "-T" versions are leaded. Both share identical electrical and thermal specifications.
MAX6380XR34+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:
- 3.4V
- 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
MAX6380XR34+T FAQ
1.How can I place an order for MAX6380XR34+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6380XR34+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 MAX6380XR34+T reliable?
The price and inventory of MAX6380XR34+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6380XR34+T is usually 5 days.
3.What payment methods are accepted for MAX6380XR34+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6380XR34+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6380XR34+T?
MAX6380XR34+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6380XR34+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 MAX6380XR34+T?
For technical support, including MAX6380XR34+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6380XR34+T requirements.
6.How does Aetrix verify that MAX6380XR34+T is sourced from the original manufacturer or authorized distributors?
All MAX6380XR34+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 MAX6380XR34+T meets industry standards.
7.What is the process for return or replacement of MAX6380XR34+T?
All MAX6380XR34+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6380XR34+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 MAX6380XR34+T part is unused and in its original packaging.
Return procedure for MAX6380XR34+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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