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Analog Devices Inc./Maxim Integrated MAX6382XR28D3+
- Part No.:
- MAX6382XR28D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR28D3+.pdf
- Description:
- POWER MANAGEMENT CIRCUIT, ADJUST
- Quantity:
- Payment:
- Shipping:
Inventory:1,040
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Product details
Overview
MAX6382XR28D3+ from Maxim Integrated is a single-supply, active-high push-pull microprocessor supervisory circuit with factory-set 2.80V 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 assertion.
For engineers reviewing the MAX6382XR28D3+ datasheet, MAX6382XR28D3+ pinout, MAX6382XR28D3+ application, or MAX6382XR28D3+ equivalent, key selection considerations include its fixed 2.80V threshold accuracy (±2.5% over −40°C to +125°C), SC70-3 package footprint, active-high push-pull output drive capability, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
The MAX6382XR28D3+ implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 140ms reset pulse after VCC rises above 2.80V, with reset deassertion occurring only after timeout completion.
It features an active-high push-pull RESET output capable of sourcing 800µA at VCC ≥ 4.5V while maintaining VOH ≥ 0.8×VCC, and sinking 3.2mA while holding VOL ≤ 0.4V - ensuring robust interface with µP reset inputs without external pull-up components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.80V (factory-set, ±2.5% over −40°C to +125°C) - ensures deterministic reset assertion during brownout at core logic supply levels. |
| Reset Timeout | 140ms minimum - provides sufficient hold time for slow-ramping power supplies and processor initialization sequences. |
| Supply Current | 3µA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| Operating Voltage | +1.0V to +5.5V - supports operation down to near-dead-battery conditions while interfacing with 1.8V, 2.5V, 3.3V, and 5V systems. |
| Output Type | Active-high push-pull - eliminates need for external pull-up resistor and ensures fast, low-impedance reset signal delivery. |
| Reset Output Validity | Guaranteed down to VCC = 1V - maintains correct logic state during deep brownout, preventing spurious release. |
| VCC Transient Immunity | 35µs max glitch rejection at 100mV overdrive - suppresses noise-induced false resets in electrically noisy environments. |
Pinout & Package
MAX6382XR28D3+ is housed in a 3-pin SC70-3 package (package code X3-2), measuring 1.25mm × 0.85mm × 0.55mm, with wettable flank leads for automated optical inspection. Pin 1 is RESET (active-high push-pull), Pin 2 is VCC, and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - asserts high during reset condition; drives µP /RESET input directly without pull-up. |
| 2 | VCC | Main supply input and monitored voltage source - powers internal circuitry and serves as primary reset trigger point. |
| 3 | GND | Analog/digital ground reference - must be connected to system ground plane with low-inductance path for stable comparator operation. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.80V with ±2.5% tolerance over full industrial temperature range - eliminates external resistor network and calibration effort. |
| Low quiescent current | 3µA at 1.8V - extends battery life in always-on monitoring nodes and energy-harvesting applications. |
| Guaranteed reset validity | Operates correctly down to VCC = 1V - prevents premature reset release during undervoltage recovery. |
| Negative transient immunity | Rejects VCC glitches ≤35µs at 100mV overdrive - improves reliability in automotive and industrial power rails. |
| SC70-3 footprint | 1.25mm × 0.85mm body - enables ultra-compact placement on space-constrained PCBs such as medical patches and sensor modules. |
Applications
| Portable Medical Sensors | Battery-Powered IoT Nodes |
|---|---|
Use Scenario: Wearable ECG patch operating from CR2032 coin cell with 2.8V nominal output voltage. IC Role / Device Role / Timing Role: Supervises VCC rail and asserts active-high RESET to ARM Cortex-M0+ MCU until supply stabilizes post-power-on. Use Value: 140ms timeout ensures complete ADC initialization and flash memory wake-up before firmware execution begins. | Use Scenario: LoRaWAN soil moisture sensor powered by alkaline AA batteries with decaying voltage profile. IC Role / Device Role / Timing Role: Monitors declining VCC and triggers reset when voltage crosses 2.80V threshold to prevent corrupted data logging. Use Value: ±2.5% threshold accuracy over temperature ensures consistent brownout detection across −20°C to +70°C field deployment. |
| Industrial Control HMI Panels | Smart Energy Meters |
Use Scenario: Touchscreen HMI powered from isolated 3.3V DC-DC converter subject to load-step transients. IC Role / Device Role / Timing Role: Provides glitch-immune reset supervision to prevent display controller lockup during power rail disturbances. Use Value: 35µs transient immunity suppresses false resets caused by 10–20µs switching noise from adjacent motor drivers. | Use Scenario: DIN-rail mounted electricity meter with dual-supply architecture (3.3V MCU + 5V metrology ASIC). IC Role / Device Role / Timing Role: Resets microcontroller when main 3.3V rail drops below 2.80V due to capacitor aging or input filter degradation. Use Value: Push-pull output drives reset line without external components - reduces BOM count and improves long-term reliability. |
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 | 2.93V threshold, 240ms timeout, same SC70-3 package, ±2% accuracy | Higher threshold better suited for 3.3V systems with tighter margin; longer timeout accommodates slower regulators | Select when system requires higher reset voltage headroom and extended reset hold time. |
| TPS3808G12DBVR | 1.2V threshold (adjustable via external resistor), 200ms timeout, SOT-23-5 package, ±0.5% accuracy | Requires external resistor network; not pin-compatible; offers tighter accuracy but larger footprint | Choose only if adjustable threshold is mandatory and board area allows SOT-23-5 layout. |
Compared with MAX6382XR28D3+, MAX809TRD3+T provides higher threshold and longer timeout in identical footprint, while TPS3808G12DBVR trades pin compatibility for adjustability and superior accuracy - making MAX6382XR28D3+ optimal for fixed 2.8V brownout protection in space-constrained 1.8V–3.3V systems.
Availability
MAX6382XR28D3+ is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT nodes, and industrial control HMI panels requiring stable component supply and long-lifecycle support.
Supply support for MAX6382XR28D3+ 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 ultra-low-power, factory-trimmed supervisory circuits optimized for battery-critical and thermally harsh environments where predictable reset behavior is non-negotiable.
FAQ
What is the exact reset threshold voltage of the MAX6382XR28D3+?
The MAX6382XR28D3+ has a factory-set reset threshold of 2.80V, specified with ±2.5% tolerance over the full operating temperature range of −40°C to +125°C. This value is laser-trimmed during production and does not require external configuration. The MAX6382XR28D3+ uses this fixed threshold to monitor VCC and assert its active-high RESET output whenever supply voltage falls below 2.80V.
Does the MAX6382XR28D3+ support manual reset functionality?
No, the MAX6382XR28D3+ does not include a manual reset (MR) input. It belongs to the MAX6382 subgroup, which features only VCC monitoring and active-high push-pull reset output. Manual reset capability is present only in MAX6384/MAX6385/MAX6386/MAX6390 variants. The MAX6382XR28D3+ relies solely on VCC voltage level for reset assertion and timing.
What package type and dimensions does the MAX6382XR28D3+ use?
The MAX6382XR28D3+ is packaged in a 3-pin SC70-3 (X3-2) package measuring 1.25mm × 0.85mm × 0.55mm with wettable flank leads. Pin 1 is RESET (active-high), Pin 2 is VCC, and Pin 3 is GND. This compact footprint enables high-density PCB layouts in space-constrained applications such as wearable electronics and miniature sensor modules.
Can the MAX6382XR28D3+ operate reliably at VCC = 1.0V?
Yes, the MAX6382XR28D3+ guarantees correct reset output logic state down to VCC = 1.0V. Its internal circuitry remains functional and the RESET output remains asserted (high) as long as VCC stays below 2.80V, even during deep brownout. This ensures no spurious release of reset during critical low-voltage recovery phases - a key requirement for battery-depleted operation in MAX6382XR28D3+ deployments.
How does the MAX6382XR28D3+ handle short VCC transients?
The MAX6382XR28D3+ provides built-in immunity to negative-going VCC transients: it will not issue a false reset for glitches ≤35µs duration when the overdrive (VTH − VCC) is 100mV. This behavior is characterized across temperature and enables robust operation in electrically noisy environments such as motor-driven industrial controls or switch-mode power supply proximity - a verified specification for the MAX6382XR28D3+.
MAX6382XR28D3+ 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:
- 2.8V
- 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
MAX6382XR28D3+ FAQ
1.How can I place an order for MAX6382XR28D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR28D3+ 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 MAX6382XR28D3+ reliable?
The price and inventory of MAX6382XR28D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR28D3+ is usually 5 days.
3.What payment methods are accepted for MAX6382XR28D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR28D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR28D3+?
MAX6382XR28D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR28D3+ 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 MAX6382XR28D3+?
For technical support, including MAX6382XR28D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR28D3+ requirements.
6.How does Aetrix verify that MAX6382XR28D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6382XR28D3+ 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 MAX6382XR28D3+ meets industry standards.
7.What is the process for return or replacement of MAX6382XR28D3+?
All MAX6382XR28D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR28D3+, 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 MAX6382XR28D3+ part is unused and in its original packaging.
Return procedure for MAX6382XR28D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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