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Analog Devices Inc./Maxim Integrated MAX6380UR39+T
- Part No.:
- MAX6380UR39+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6380UR39+T.pdf
- Description:
- IC VOLT DETECT LP 3.90V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,962
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Product details
Overview
MAX6380UR39+T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector optimized for battery and power-supply monitoring in portable systems. It features a factory-trimmed 3.90V threshold (±2.5% over temperature), 500nA supply current at +25°C, propagation delay of 9.5µs, and operates from VCC = 1.2V to 5.5V. It asserts OUT low when VCC falls below VTH and is used in Li+-battery-powered devices requiring precise brownout detection.
For engineers reviewing the MAX6380UR39+T datasheet, MAX6380UR39+T pinout, MAX6380UR39+T application, or MAX6380UR39+T equivalent, key selection criteria include its 3.90V trip point, SOT23-3 open-drain output configuration, -40°C to +85°C operating range, transient immunity up to 200µs at 100mV overdrive, and compatibility with 1.2V minimum VCC operation.
Technical Context
The MAX6380UR39+T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 3.90V threshold. Its open-drain output requires an external pull-up and sinks ≥100µA when asserted, supporting interface with diverse logic families up to 5.5V.
It ignores fast negative-going VCC transients - maximum allowable glitch duration is 200µs at 100mV overdrive (VTH − VCC) - and guarantees correct output state down to VCC = 1.0V, enabling reliable reset assertion during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.90V ±2.5% over -40°C to +85°C - ensures accurate brownout detection across industrial temperature range |
| Supply Current | 500nA at +25°C - enables multi-year battery life in coin-cell–powered IoT sensors and wearables |
| Propagation Delay | 9.5µs typical - provides fast response to supply collapse without false triggering on noise |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep discharge and across multiple rail voltages |
| Output Type | Active-low open-drain - allows wired-OR reset bus and flexible pull-up to any logic rail ≤5.5V |
| Threshold Hysteresis | 100mV - prevents chatter during slow VCC recovery near trip point |
| Tempco | 40ppm/°C - minimizes drift-induced timing uncertainty in wide-temperature deployments |
Pinout & Package
MAX6380UR39+T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with SC70-3 but with higher power dissipation rating (320mW at +70°C).
| 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 | Open-drain active-low output - sinks current when VCC < VTH; requires external pull-up resistor for logic-high state |
| 3 | VCC | Supply input - powers internal circuitry; valid from 1.2V to 5.5V; monitors this rail for undervoltage condition |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA at +25°C - reduces quiescent load on primary battery by >95% vs. comparable micropower supervisors |
| Factory-trimmed VTH | 3.90V with ±2.5% tolerance over full temperature range - eliminates need for external resistor divider calibration |
| Transient immunity | Rejects VCC glitches ≤200µs at 100mV overdrive - avoids spurious resets in noisy power environments |
| No external components | Self-contained detection circuit - removes BOM cost and board space for resistors, capacitors, or comparators |
| 1.2V minimum VCC | Guaranteed operation down to 1.2V - enables use with single-cell LiFePO₄ or deeply discharged Li-ion batteries |
Applications
| Portable Medical Sensors | Industrial Telemetry Nodes |
|---|---|
Use Scenario: Coin-cell–powered ECG patch monitors heart rate continuously for 3+ years. IC Role / Device Role / Timing Role: Voltage detector asserting system reset when Li+ cell drops below 3.90V, preventing data corruption during brownout. Use Value: 500nA ICC extends battery life beyond 36 months; 1.2V min VCC support ensures detection even at end-of-life cell voltage. |
Use Scenario: Solar-charged remote RTU samples pressure/temperature hourly and transmits via LoRaWAN. IC Role / Device Role / Timing Role: Brownout supervisor enabling clean MCU shutdown before energy storage depletes below safe operating level. Use Value: Open-drain output interfaces directly to 3.3V microcontroller reset pin while powered from 4.2V solar buffer; 9.5µs delay ensures timely response. |
| Smart Home Smoke Detectors | Asset Tracking Tags |
Use Scenario: Battery-operated photoelectric smoke alarm with 10-year shelf life and self-test capability. IC Role / Device Role / Timing Role: Primary undervoltage monitor triggering low-battery alert and disabling non-critical peripherals. Use Value: ±2.5% VTH accuracy over temperature ensures consistent low-battery flag across -10°C to +50°C ambient; no calibration required. |
Use Scenario: GPS-enabled logistics tag reporting location every 6 hours using CR2032 battery. IC Role / Device Role / Timing Role: Reset generator ensuring MCU boots only when VCC ≥3.90V after cold start or wake-from-hibernate. Use Value: 100mV hysteresis prevents oscillation during gradual battery decay; SOT23-3 footprint fits tight PCB area constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB39DPWR | 3.9V open-drain detector; 350nA ICC; 1.6V min VCC; ±1.5% VTH accuracy; SOT23-3 | Lower ICC and tighter threshold tolerance, but reduced VCC range limits use with <1.6V sources | Select TLV803EB39DPWR if ultra-low ICC and high-accuracy threshold are prioritized and VCC never falls below 1.6V |
| APX803S-39SA-7 | 3.9V open-drain detector; 600nA ICC; 0.9V min VCC; ±2.0% VTH accuracy; SOT23-3 | Wider VCC range supports sub-1.2V operation, but higher ICC and slightly better accuracy than MAX6380UR39+T | Select APX803S-39SA-7 if operation below 1.2V is required and 100nA higher ICC is acceptable |
Compared with TLV803EB39DPWR and APX803S-39SA-7, the MAX6380UR39+T uniquely balances 500nA ICC, 1.2V minimum VCC, and ±2.5% threshold stability - making it optimal for long-life Li+-based systems where both deep brownout detection and nanoamp quiescent draw are mandatory.
Availability
MAX6380UR39+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial telemetry nodes, smart home smoke detectors, and asset tracking tags requiring stable component supply and guaranteed long-term availability.
Supply support for MAX6380UR39+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, automotive, communications, and consumer applications.
The MAX6375–MAX6380 family delivers ultra-low-power voltage supervision for battery-critical systems, with the MAX6380UR39+T specifically targeting 3.9V brownout detection in space-constrained, long-life portable equipment.
FAQ
What is the exact reset threshold voltage of the MAX6380UR39+T?
The MAX6380UR39+T has a factory-trimmed nominal reset threshold of 3.90V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in Table 1 of the official datasheet under suffix "R39", and applies specifically to the MAX6380UR39+T variant - not the broader MAX6380 family.
Does the MAX6380UR39+T support operation below 2.0V?
Yes, the MAX6380UR39+T guarantees correct functional operation down to VCC = 1.2V, and maintains valid output logic state (OUT asserted low) down to VCC = 1.0V. This is explicitly specified in the General Description and Electrical Characteristics sections, enabling use with deeply discharged lithium chemistries.
What is the output configuration of the MAX6380UR39+T and how should it be interfaced?
The MAX6380UR39+T features an active-low open-drain output (OUT), as confirmed in Pin Description and Applications Information. It must be pulled up externally - typically with a resistor to a logic rail ≤5.5V - to generate a valid high-level signal. The output sinks ≥100µA when asserted, per Electrical Characteristics.
Is the MAX6380UR39+T available in lead-free packaging?
Yes, the "+T" suffix in MAX6380UR39+T explicitly denotes lead-free, RoHS-compliant packaging, per the Ordering Information section. This replaces the legacy "-T" leaded version and meets JEDEC J-STD-020 reflow requirements for Pb-free assembly.
How does the MAX6380UR39+T handle power supply transients?
The MAX6380UR39+T rejects short negative-going VCC transients: the Maximum Transient Duration vs. Threshold Overdrive graph confirms immunity to glitches ≤200µs at 100mV overdrive (VTH − VCC). This prevents false resets in electrically noisy environments such as motor-driven or switching-power-supply systems.
MAX6380UR39+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.9V
- 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:
- SOT-23-3
MAX6380UR39+T FAQ
1.How can I place an order for MAX6380UR39+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6380UR39+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 MAX6380UR39+T reliable?
The price and inventory of MAX6380UR39+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6380UR39+T is usually 5 days.
3.What payment methods are accepted for MAX6380UR39+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6380UR39+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6380UR39+T?
MAX6380UR39+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6380UR39+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 MAX6380UR39+T?
For technical support, including MAX6380UR39+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6380UR39+T requirements.
6.How does Aetrix verify that MAX6380UR39+T is sourced from the original manufacturer or authorized distributors?
All MAX6380UR39+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 MAX6380UR39+T meets industry standards.
7.What is the process for return or replacement of MAX6380UR39+T?
All MAX6380UR39+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6380UR39+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 MAX6380UR39+T part is unused and in its original packaging.
Return procedure for MAX6380UR39+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6380UR39+T Tags
-
MIC826SYMT-TR
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APX803S-31SA-7
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APX803L20-29SA-7
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V6340RSP3B+
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EM6325CXSP5B-2.9+
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MCP120T-300I/TT
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MCP130T-315I/TT
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MCP120T-475I/TT
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MCP111T-300E/TT
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MCP120T-315I/TT
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