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Analog Devices Inc./Maxim Integrated MAX6380XR46+T
- Part No.:
- MAX6380XR46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6380XR46+T.pdf
- Description:
- IC VOLT DETECT LP 4.63V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,512
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Product details
Overview
MAX6380XR46+T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector with a factory-trimmed 4.63V threshold, ±2.5% accuracy over temperature, 500nA supply current, and SC70-3 package. It monitors regulated system or battery supply voltage and asserts OUT low when VCC falls below threshold-used in precision brown-out detection for microcontroller reset supervision in portable equipment.
For engineers reviewing the MAX6380XR46+T datasheet, MAX6380XR46+T pinout, MAX6380XR46+T application, or MAX6380XR46+T equivalent, key selection criteria include threshold accuracy at temperature extremes, propagation delay under transient conditions, open-drain output compatibility with mixed-voltage logic, and ultra-low ICC for battery runtime optimization.
Technical Context
The MAX6380XR46+T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 4.63V trip point. Its open-drain output sinks current when asserted and requires an external pull-up to any voltage ≤5.5V, enabling level-shifting across logic families.
It features built-in immunity to fast negative-going VCC transients (≤20µs at 100mV overdrive), operates reliably down to 1V supply, and guarantees correct output state across -40°C to +85°C without external components or trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 4.63V nominal, ±2.5% over -40°C to +85°C - ensures reliable reset assertion across industrial temperature range |
| Supply Current | 500nA typical - extends battery life in always-on monitoring applications |
| Output Type | Active-low open-drain - supports wired-OR configurations and flexible pull-up voltage selection up to 5.5V |
| Propagation Delay | 9.5µs max (falling edge) - enables fast response to supply droop before system instability |
| VCC Operating Range | 1.2V to 5.5V - functions during deep brown-out and supports wide-input power rails |
| Hysteresis | 100mV - prevents chatter near threshold during slow-ramping or noisy supplies |
| Tempco | 40ppm/°C - contributes to tight threshold stability over temperature |
Pinout & Package
MAX6380XR46+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), lead-free, tape-and-reel compatible. Pin 1 = GND, Pin 2 = OUT (open-drain active-low), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground for internal bandgap and comparator - must be low-impedance connection to system ground plane |
| 2 | OUT | Open-drain active-low output - requires external pull-up; sinks ≥100µA at VOL ≤0.4V when asserted |
| 3 | VCC | Supply input - powers internal circuitry; valid from 1.2V to 5.5V; monitors this node for threshold violation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Enables multi-year operation on coin-cell batteries in maintenance-free IoT sensors |
| ±2.5% threshold accuracy over temperature | Eliminates need for calibration or margining in industrial-grade power monitoring |
| Open-drain output with 5.5V tolerance | Allows direct interface to 1.8V, 3.3V, or 5V logic domains using appropriate pull-up |
| 100mV built-in hysteresis | Prevents false triggering on noisy or slowly recovering supplies without external RC |
| Transient immunity (≤20µs glitches) | Rejects ESD-induced or switching regulator noise without additional filtering |
Applications
| Microcontroller Reset Supervision | Battery Voltage Monitoring |
|---|---|
|
Use Scenario: Detects undervoltage condition on a 5V-regulated rail powering an ARM Cortex-M4 MCU. IC Role / Device Role / Timing Role: Active-low reset supervisor asserting /RESET line to hold processor in reset until VCC recovers above 4.63V. Use Value: Prevents code execution corruption during brown-out by guaranteeing clean reset assertion with <9.5µs delay and no false triggers from 100mV transients. |
Use Scenario: Monitors Li-ion battery pack voltage (4.2V full, 3.0V cutoff) via resistive divider to scale into 4.63V detector range. IC Role / Device Role / Timing Role: Threshold comparator triggering low-battery warning LED or shutdown signal when scaled battery voltage drops below 4.63V-equivalent. Use Value: Delivers precise end-of-discharge detection with ±2.5% accuracy over temperature, eliminating software-based ADC polling overhead. |
| Power Sequencing Control | Industrial Sensor Node Wake-Up |
|
Use Scenario: Ensures downstream 3.3V LDO only enables after primary 5V rail stabilizes above 4.63V. IC Role / Device Role / Timing Role: Enables enable input of PMIC or load switch via open-drain output pulled to 3.3V. Use Value: Provides hardware-enforced sequencing with zero external components and guaranteed 1V minimum operating voltage. |
Use Scenario: Wakes ultra-low-power sensor node from sleep when main supply rises above 4.63V after wake-on-power event. IC Role / Device Role / Timing Role: Active-low output inverted via small-signal transistor to generate wake pulse for MCU's external interrupt pin. Use Value: Achieves sub-µA quiescent current in sleep mode while delivering deterministic, glitch-immune wake timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB33DBVR | 3.3V threshold, SOT-23-3, 350nA ICC, push-pull active-low output | Fixed lower threshold; lacks open-drain flexibility for level-shifting | Select when 3.3V reset is required and board already uses push-pull reset topology |
| APX803S-46SA-7 | 4.63V threshold, SOT-23-3, 1.6µA ICC, open-drain active-low, ±2% accuracy | Higher supply current; tighter threshold tolerance but less transient immunity (no published glitch rejection spec) | Select when higher accuracy is prioritized over battery life and transient robustness is not critical |
Compared with TLV803EB33DBVR and APX803S-46SA-7, the MAX6380XR46+T uniquely combines 4.63V precision, 500nA ultra-low ICC, open-drain output, and documented 20µs transient immunity - making it optimal for long-life, mixed-voltage, noise-prone embedded systems.
Availability
MAX6380XR46+T is available at Aetrix Electronics and suitable for precision battery monitoring, microcontroller reset supervision, and industrial power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for MAX6380XR46+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 interface applications, with emphasis on reliability and integration.
The MAX6375–MAX6380 family delivers ultra-low-power, factory-trimmed voltage detection for space-constrained, battery-sensitive systems where precision, simplicity, and robustness are essential.
FAQ
What is the exact factory-trimmed threshold voltage of the MAX6380XR46+T?
The MAX6380XR46+T has a nominal threshold voltage of 4.63V, with a guaranteed tolerance of ±2.5% over the full -40°C to +85°C operating temperature range. At +25°C, the typical value is 4.63V, and the min/max spread is 4.514V to 4.746V per the datasheet's Table 1.
Does the MAX6380XR46+T require external components to operate?
No, the MAX6380XR46+T requires no external components to function as a voltage detector. 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 for proper logic-level translation.
What is the maximum allowable negative-going VCC transient duration the MAX6380XR46+T can ignore?
The MAX6380XR46+T can ignore negative-going VCC transients up to 20µs in duration when the overdrive (VTH – VCC) is 100mV, as shown in the "Maximum Transient Duration vs. Threshold Overdrive" graph. Shorter durations are tolerated at larger overdrives, ensuring robust operation in electrically noisy environments.
Can the MAX6380XR46+T operate with a supply voltage below 2.5V?
Yes, the MAX6380XR46+T is fully functional down to 1.2V VCC and guarantees correct output logic state (active-low when VCC < 4.63V) for VCC as low as 1V. This allows use in deep brown-out scenarios and compatibility with low-voltage energy-harvesting sources.
What package type and marking code does the MAX6380XR46+T use?
The MAX6380XR46+T is supplied in a 3-pin SC70-3 package with lead-free finish. Its top-side marking code is "ADD", as specified in Maxim's Device Marking Codes table for the R46-T variant in SC70 packaging.
MAX6380XR46+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:
- 4.63V
- 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
MAX6380XR46+T FAQ
1.How can I place an order for MAX6380XR46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6380XR46+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 MAX6380XR46+T reliable?
The price and inventory of MAX6380XR46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6380XR46+T is usually 5 days.
3.What payment methods are accepted for MAX6380XR46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6380XR46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6380XR46+T?
MAX6380XR46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6380XR46+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 MAX6380XR46+T?
For technical support, including MAX6380XR46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6380XR46+T requirements.
6.How does Aetrix verify that MAX6380XR46+T is sourced from the original manufacturer or authorized distributors?
All MAX6380XR46+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 MAX6380XR46+T meets industry standards.
7.What is the process for return or replacement of MAX6380XR46+T?
All MAX6380XR46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6380XR46+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 MAX6380XR46+T part is unused and in its original packaging.
Return procedure for MAX6380XR46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6380XR46+T Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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TPS3828-33DBVR
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
Microchip Technology
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
Microchip Technology
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MCP111T-300E/TT
Microchip Technology
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MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
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