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Analog Devices Inc./Maxim Integrated MAX6382XR46D3+
- Part No.:
- MAX6382XR46D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR46D3+.pdf
- Description:
- POWER MANAGEMENT CIRCUIT, ADJUST
- Quantity:
- Payment:
- Shipping:
Inventory:1,875
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Product details
Overview
MAX6382XR46D3+ from Maxim Integrated is a single-supply, active-high push-pull microprocessor supervisory circuit with factory-set 4.63V reset threshold and 140ms minimum reset timeout. It monitors VCC from +1.8V to +5.0V, consumes only 3µA at +1.8V, guarantees valid reset output down to VCC = 1V, and is used in portable battery-powered equipment for reliable power-on reset sequencing.
For engineers reviewing the MAX6382XR46D3+ datasheet, MAX6382XR46D3+ pinout, MAX6382XR46D3+ application, or MAX6382XR46D3+ equivalent, key selection considerations include its fixed 4.63V threshold accuracy (±2.5% over −40°C to +125°C), SC70-3 package footprint, active-high push-pull output drive capability, low quiescent current, and immunity to negative-going VCC transients.
Technical Context
The MAX6382XR46D3+ integrates a precision voltage comparator referenced to an internal bandgap, a temperature-compensated reset timer (60ppm/°C tempco), and a push-pull output stage. Its reset assertion logic responds to VCC falling below 4.63V (min 4.51V, max 4.74V) and holds reset active for ≥140ms after VCC rises above threshold.
No manual reset (MR) or auxiliary RESET IN inputs are present - this variant is a minimal three-pin device dedicated solely to VCC monitoring. The internal circuitry ensures monotonic reset behavior and guaranteed logic state validity down to VCC = 1V, eliminating need for external pull resistors on the RESET line.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal (4.51V–4.74V range); enables precise brownout detection for 5V systems |
| Reset Timeout | 140ms minimum; ensures µP initialization completes before release of reset signal |
| Supply Current | 3µA at +1.8V; supports ultra-low-power battery operation for >10-year shelf life |
| Operating Voltage | +1.0V to +5.5V; functions reliably during deep brownout and full rail conditions |
| Threshold Accuracy | ±2.5% over −40°C to +125°C; eliminates need for system-level calibration |
| Output Type | Active-high push-pull; drives reset input directly without external pull-up resistor |
| VCC Validity Limit | Guaranteed correct logic state down to VCC = 1V; prevents metastability during power collapse |
Pinout & Package
MAX6382XR46D3+ is housed in a 3-pin SC70-3 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads and lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Active-high push-pull output; asserts high during reset, deasserts low when VCC > 4.63V and timeout expires |
| 3 | VCC | Power supply input and monitored voltage source; supplies internal circuitry and sets reset threshold |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed threshold | 4.63V ±2.5% over full temperature range eliminates external resistor network and calibration |
| Low supply current | 3µA at 1.8V enables integration into always-on battery-backed subsystems without measurable drain |
| Push-pull active-high output | Directly interfaces with standard µP reset inputs without pull-up resistor or level-shifting circuitry |
| Negative transient immunity | Rejects VCC glitches <35µs duration at 100mV overdrive, reducing false resets in noisy power environments |
| Valid output at low VCC | RESET logic state remains defined down to VCC = 1V, ensuring deterministic behavior during power collapse |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose monitor with cold-start requirement and strict FDA power-up validation. IC Role / Device Role / Timing Role: Supervises 3.3V supply rail and asserts active-high reset to ARM Cortex-M0 until stable; enforces 140ms minimum hold time. Use Value: Guarantees µP enters known state before firmware executes, meeting IEC 62304 boot integrity requirements. | Use Scenario: DIN-rail mounted analog input module operating in wide-temperature industrial cabinets. IC Role / Device Role / Timing Role: Monitors 5V system rail against 4.63V threshold to detect brownout; provides clean reset pulse to FPGA configuration logic. Use Value: Prevents partial configuration or metastable states during line sags, improving field reliability in 24/7 operation. |
| Smart Energy Meters | Automotive Body Control Units |
Use Scenario: ANSI C12.20-compliant electricity meter with dual-supply architecture (3.3V MCU + 1.8V RTC). IC Role / Device Role / Timing Role: Resets main MCU domain upon 5V supply drop below 4.63V; operates from 1.8V–5.5V supply range. Use Value: Ensures accurate energy accumulation resumes only after full power stabilization, satisfying metrology certification. | Use Scenario: 12V-to-5V converted subsystem powering door lock controller with CAN interface. IC Role / Device Role / Timing Role: Provides fail-safe reset to microcontroller during ignition cycling or load-dump events affecting 5V rail. Use Value: Eliminates watchdog timeouts caused by undervoltage, preventing unintended actuator activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 4.63V threshold, 240ms timeout, SOT23-3 package, ±2% accuracy, 12µA ICC at 3.3V | Longer timeout may delay system boot; larger SOT23 footprint requires PCB redesign | Select when longer reset hold time is required and board space allows SOT23 |
| TPS3808G33DBVR | 3.3V threshold (not 4.63V), 200ms timeout, SOT23-5, ±0.5% accuracy, 1.1µA ICC at 3.3V | Incorrect threshold for 5V systems; requires external resistor network to adjust threshold | Select only if recalibrating threshold via external divider is acceptable and ultra-low ICC is critical |
Compared with MAX809TRD3+T and TPS3808G33DBVR, the MAX6382XR46D3+ offers optimal fit for 5V brownout detection with minimal footprint and lowest ICC at low voltages, while avoiding timeout overdesign or threshold mismatch penalties.
Availability
MAX6382XR46D3+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart energy meters, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR46D3+ 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, sensing, and interface applications, with emphasis on high-reliability, low-power, and small-footprint solutions.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for battery-powered and space-constrained systems where guaranteed reset timing and ultra-low ICC are critical design requirements.
FAQ
What is the exact reset threshold voltage of MAX6382XR46D3+?
The MAX6382XR46D3+ has a factory-set nominal reset threshold of 4.63V, with a guaranteed range of 4.51V to 4.74V over −40°C to +125°C. This value is laser-trimmed during production and specified with ±2.5% accuracy across temperature, making it suitable for precise 5V system brownout detection without external calibration.
Does MAX6382XR46D3+ support manual reset functionality?
No, the MAX6382XR46D3+ does not include a manual reset (MR) input. It is a three-pin device (VCC, GND, RESET) dedicated exclusively to VCC monitoring. Manual reset capability is only available in four-pin and six-pin variants such as MAX6384, MAX6385, and MAX6390 - the MAX6382XR46D3+ omits MR to minimize size and cost for applications requiring only power-fail supervision.
What package type and dimensions does MAX6382XR46D3+ use?
The MAX6382XR46D3+ uses the SC70-3 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm with gull-wing leads. It is lead-free, RoHS-compliant, and compatible with standard reflow soldering profiles. This ultra-compact footprint is significantly smaller than SOT23-3 and enables high-density PCB layouts in space-constrained portable designs.
How does MAX6382XR46D3+ behave when VCC drops below 1.0V?
The MAX6382XR46D3+ guarantees correct RESET output logic state only down to VCC = 1.0V. Below that voltage, the internal circuitry cannot maintain defined operation. For applications requiring valid reset signaling all the way to 0V, an external pull-down resistor on the RESET line is needed - but this is not applicable to MAX6382XR46D3+ since its push-pull output actively drives low when deasserted, and no such external network is recommended per datasheet guidance.
Is MAX6382XR46D3+ pin-compatible with other MAX638x series devices?
The MAX6382XR46D3+ shares the same 3-pin SC70-3 pinout (VCC, RESET, GND) with MAX6381 and MAX6383, but differs functionally: MAX6381 has active-low push-pull output, MAX6383 has active-low open-drain output, while MAX6382XR46D3+ provides active-high push-pull. Pin compatibility exists physically, but logic polarity and output structure require careful schematic review before substitution.
MAX6382XR46D3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6382XR46D3+ FAQ
1.How can I place an order for MAX6382XR46D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR46D3+ 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 MAX6382XR46D3+ reliable?
The price and inventory of MAX6382XR46D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR46D3+ is usually 5 days.
3.What payment methods are accepted for MAX6382XR46D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR46D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR46D3+?
MAX6382XR46D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR46D3+ 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 MAX6382XR46D3+?
For technical support, including MAX6382XR46D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR46D3+ requirements.
6.How does Aetrix verify that MAX6382XR46D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6382XR46D3+ 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 MAX6382XR46D3+ meets industry standards.
7.What is the process for return or replacement of MAX6382XR46D3+?
All MAX6382XR46D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR46D3+, 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 MAX6382XR46D3+ part is unused and in its original packaging.
Return procedure for MAX6382XR46D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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