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Analog Devices Inc./Maxim Integrated MAX6382XR29D3
- Part No.:
- MAX6382XR29D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR29D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,402
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Product details
Overview
The MAX6382XR29D3 from Maxim Integrated is a single-supply, active-high push-pull microprocessor supervisory circuit with factory-set 2.93V 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 battery-powered embedded controllers for reliable power-on reset sequencing.
For engineers reviewing the MAX6382XR29D3 datasheet, MAX6382XR29D3 pinout, MAX6382XR29D3 application, or MAX6382XR29D3 equivalent, key selection criteria include its precise 2.93V ±2.5% threshold 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 up to 140µs at 100mV overdrive.
Technical Context
This device implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across temperature, paired with a temperature-stable RC timer generating a guaranteed-minimum 140ms reset assertion period after VCC recovery. The internal 63kΩ pullup on MR (not present in MAX6382) is omitted - confirming MAX6382 has no manual reset input.
Unlike MAX6384–MAX6386/MAX6390, MAX6382 lacks MR; unlike MAX6387–MAX6389, it has no RESET IN auxiliary monitor. Its active-high push-pull RESET output drives high during fault conditions (VCC < 2.93V) and remains asserted for ≥140ms after VCC exceeds threshold, ensuring µP initialization stability during brownout recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±2.5% over –40°C to +125°C - ensures reliable detection of 3.3V rail brownout without false triggers |
| Reset Timeout | 140ms minimum - guarantees µP reset hold time sufficient for oscillator startup and memory initialization |
| Supply Current | 3µA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | +1.0V to +5.5V - supports valid reset assertion even during deep brownout down to 1V VCC |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor; drives high during reset, low otherwise |
| Temp Range | –40°C to +125°C - qualified for under-hood automotive and industrial control applications |
| Threshold Tempco | 60ppm/°C - limits drift to <15mV over full temperature range, preserving margin against noise |
Pinout & Package
MAX6382XR29D3 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 1 = VCC, Pin 2 = RESET, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and monitored voltage source; powers internal circuitry and sets fixed reset threshold |
| 2 | RESET | Active-high push-pull output; asserts high when VCC < 2.93V and holds for ≥140ms after recovery |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed threshold | 2.93V with ±2.5% tolerance over full temperature range - eliminates external resistor divider calibration |
| Ultra-low ICC | 3µA at 1.8V - extends battery life in portable medical monitors and wearables |
| Valid reset down to VCC = 1V | Guaranteed logic state on RESET pin even during severe brownout - prevents µP latch-up or undefined behavior |
| Negative transient immunity | Rejects VCC glitches ≤140µs wide at 100mV overdrive - suppresses noise-induced spurious resets |
| SC70-3 footprint | 2.0mm × 2.1mm body - enables high-density PCB layouts in space-constrained edge-node devices |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meter with ARM Cortex-M0+ MCU requiring deterministic reset at power-on and brownout. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to hold MCU in reset until 3.3V rail stabilizes above 2.93V for ≥140ms. Use Value: Prevents firmware execution before ADC reference and RF transceiver power rails are fully settled. | Use Scenario: DIN-rail mounted programmable logic controller with isolated 24V DC input powering internal 3.3V logic rail. IC Role / Device Role / Timing Role: Primary reset supervisor monitoring 3.3V VCC; asserts RESET high during line dips below 2.93V and holds for 140ms post-recovery. Use Value: Ensures deterministic state machine restart after brief AC line sags, avoiding watchdog timeouts or corrupted I/O states. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: Under-hood BCM powered from vehicle battery (9V–16V) with LDO generating 3.3V for microcontroller. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output; generates active-high reset pulse on cold-crank voltage drop below 2.93V. Use Value: Guarantees MCU reset during engine start (battery dip to ~6V) without requiring complex window-detect circuitry. | Use Scenario: Revenue-grade electricity meter with metrology SoC and secure bootloader requiring tamper-proof power sequencing. IC Role / Device Role / Timing Role: Provides fail-safe reset signal to SoC upon 3.3V rail collapse due to ESD event or capacitor aging. Use Value: Maintains data integrity by forcing controlled reboot before flash write corruption occurs during undervoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 2.93V threshold, 140ms timeout, SOT23-3 package, ±2% accuracy, 1.2µA ICC at 1.8V | Lower supply current but larger SOT23 footprint (2.9mm × 1.6mm vs. SC70's 2.0mm × 2.1mm) | Select for ultra-low-power designs where board area is less constrained than current budget |
| TPS3808G33DBVR | 3.3V threshold (not 2.93V), 200ms timeout, SOT23-6, ±0.5% accuracy, 1.1µA ICC at 1.8V | Higher threshold unsuitable for 3.3V systems with tight noise margin; requires different PCB layout | Select only if system uses 3.3V rail with ≥100mV noise margin and longer timeout is acceptable |
Compared with MAX809TRD3+T, MAX6382XR29D3 offers smaller SC70-3 footprint and higher threshold accuracy tolerance (±2.5% vs. ±2%), while TPS3808G33DBVR provides superior accuracy but mismatches the required 2.93V trip point and increases board area.
Availability
MAX6382XR29D3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR29D3 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 demanding industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy µP supervisory circuits optimized for battery-operated and thermally harsh environments where reliable power-on reset and brownout protection are critical.
FAQ
What is the exact reset threshold voltage of the MAX6382XR29D3?
The MAX6382XR29D3 has a factory-set nominal reset threshold of 2.93V, with guaranteed limits of 2.85V (min) and 3.00V (max) over the full operating temperature range of –40°C to +125°C. This value is laser-trimmed during production and specified with ±2.5% accuracy, making it suitable for monitoring standard 3.3V power rails with adequate noise margin.
Does the MAX6382XR29D3 include a manual reset input (MR)?
No, the MAX6382XR29D3 does not feature a manual reset input. According to the official Maxim datasheet and selector guide, MR is only present on MAX6384, MAX6385, MAX6386, and MAX6390 variants. The MAX6382XR29D3 is a dedicated VCC-monitoring device with no MR pin - its 3-pin SC70 configuration consists solely of VCC, RESET, and GND.
What is the function of the RESET output on the MAX6382XR29D3?
The RESET output of the MAX6382XR29D3 is an active-high push-pull driver. It asserts high whenever VCC falls below the 2.93V threshold and remains high for a minimum of 140ms after VCC rises above the threshold. This output directly interfaces with microprocessor reset inputs without requiring external pullup resistors, and maintains valid logic levels down to VCC = 1V.
Which package type is used for the MAX6382XR29D3?
The MAX6382XR29D3 is supplied in a 3-pin SC70-3 package (package code X3-2), with dimensions of 2.0mm × 2.1mm × 0.95mm and gull-wing surface-mount leads. This compact lead-free package enables high-density PCB layouts and is compatible with standard reflow soldering processes.
What is the supply current consumption of the MAX6382XR29D3 at 1.8V?
The MAX6382XR29D3 draws only 3µA of supply current at VCC = +1.8V and TA = +25°C, rising to 6µA at +3.6V. This ultra-low quiescent current is maintained across the full –40°C to +125°C temperature range, making the device ideal for long-life battery-powered applications such as wireless sensor nodes and portable diagnostics equipment.
MAX6382XR29D3 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:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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
MAX6382XR29D3 FAQ
1.How can I place an order for MAX6382XR29D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR29D3 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 MAX6382XR29D3 reliable?
The price and inventory of MAX6382XR29D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR29D3 is usually 5 days.
3.What payment methods are accepted for MAX6382XR29D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR29D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR29D3?
MAX6382XR29D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR29D3 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 MAX6382XR29D3?
For technical support, including MAX6382XR29D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR29D3 requirements.
6.How does Aetrix verify that MAX6382XR29D3 is sourced from the original manufacturer or authorized distributors?
All MAX6382XR29D3 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 MAX6382XR29D3 meets industry standards.
7.What is the process for return or replacement of MAX6382XR29D3?
All MAX6382XR29D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR29D3, 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 MAX6382XR29D3 part is unused and in its original packaging.
Return procedure for MAX6382XR29D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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