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Analog Devices Inc./Maxim Integrated MAX6830WIUT+
- Part No.:
- MAX6830WIUT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6830WIUT+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,579
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Product details
Overview
MAX6830WIUT+ from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, designed to monitor primary supply (VCC) and secondary supply (VCC2) with factory-trimmed thresholds. It features push-pull active-high RESET output, manual reset (MR), watchdog timer (1.6s timeout), and guaranteed reset validity down to VCC = +1.2V over –40°C to +125°C. Used in portable battery-powered equipment and multivoltage embedded systems for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6830WIUT+ datasheet, MAX6830WIUT+ pinout, MAX6830WIUT+ application, or MAX6830WIUT+ equivalent, key selection criteria include its fixed VCC2 threshold of +1.665V (W suffix), push-pull active-high RESET, watchdog enable/disable via WDI pin, and operation across industrial temperature range without external components.
Technical Context
The MAX6830WIUT+ integrates two independent voltage monitors: one for VCC (programmable threshold per suffix; W = +1.67V) and one factory-trimmed VCC2 monitor (+1.665V). Its internal watchdog timer triggers reset if WDI remains static beyond 1.6s (min 1.12s, max 2.6s over temperature), and resets on any edge transition.
It uses a dedicated VCC2 pin (Pin 5) - not user-adjustable - unlike MAX6826–MAX6828's RESET IN pin. The push-pull RESET output (Pin 1) drives high when asserted (active-high), sourcing up to 800µA at VCC ≥ 4.75V, and remains valid down to VCC = +1.2V across full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | +1.67V (W suffix), ±30mV tolerance over –40°C to +125°C - sets primary supply brownout detection point |
| VCC2 Threshold | +1.665V (factory-trimmed, W suffix), ±30mV over –40°C to +125°C - monitors secondary rail without resistor divider |
| Reset Timeout Period | 140ms minimum, 320ms maximum over –40°C to +125°C - ensures µP completes power stabilization before release |
| Watchdog Timeout | 1.6s nominal (1.12s to 2.6s over temperature) - detects firmware hangs in safety-critical embedded code |
| RESET Output Type | Push-pull active-high - directly drives µP reset input without external pullup; sinks 3.2mA at VCC ≥ 4.25V |
| Operating Voltage Range | VCC = +1.53V to +2.0V (W/V variants), fully functional down to +1.2V - supports low-power 1.8V/1.5V system rails |
| Supply Current | 25µA max at VCC = +1.8V, –40°C to +125°C - enables multi-year battery life in portable monitoring devices |
Pinout & Package
Package: 6-pin SOT23 (U6+1, outline 21-0058), RoHS-compliant, surface-mount, footprint compatible with JEDEC MO-178.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; asserts high during fault conditions and holds for full timeout period |
| 2 | GND | Ground reference for all internal comparators, watchdog, and output driver |
| 3 | MR | Manual reset input (active-low); internal 50kΩ pullup; 200ns response to falling edge |
| 4 | WDI | Watchdog input; toggling within 1.6s prevents reset; unconnected disables watchdog |
| 5 | VCC2 | Secondary supply input; factory-trimmed comparator threshold +1.665V - no external components required |
| 6 | VCC | Primary supply input; monitored against W-suffix threshold (+1.67V); powers entire IC |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply monitoring | Simultaneously supervises VCC (W-threshold: +1.67V) and VCC2 (+1.665V) - eliminates need for discrete supervisors in dual-rail systems |
| Factory-trimmed VCC2 threshold | ±0.03V accuracy over –40°C to +125°C - removes calibration burden and resistor-divider error in compact designs |
| Guaranteed operation down to VCC = +1.2V | Valid RESET assertion and timing integrity maintained even during deep brownout - critical for fail-safe shutdown |
| No external components required | Full supervision functionality (dual monitor, MR, WDI, RESET) in 6-pin SOT23 - reduces BOM count and PCB area by >50% vs. discrete solutions |
| Immunity to short negative VCC transients | Withstands ≤20µs, 100mV undershoot without false reset - improves robustness in noisy power environments |
Applications
| Portable Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Wearable health monitor powered by single Li-ion cell (2.8V–4.2V) with 1.8V I/O and 1.2V core rails. IC Role / Device Role / Timing Role: Supervises both 1.8V I/O supply (VCC) and 1.2V core supply (VCC2) to ensure synchronized reset during battery sag or charge termination. Use Value: Prevents partial initialization and memory corruption when either rail drops below +1.665V, using factory-trimmed thresholds eliminating calibration overhead. |
Use Scenario: Industrial PLC controller with separate 3.3V communication interface and 1.5V FPGA core. IC Role / Device Role / Timing Role: Monitors 3.3V interface rail (VCC) and 1.5V FPGA rail (VCC2) with independent thresholds; asserts active-high RESET to FPGA's dedicated reset pin. Use Value: Enables deterministic startup sequencing and brownout recovery without external RC networks or voltage dividers. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Handheld multimeter with segmented LCD, MCU, and analog front-end powered from coin cell. IC Role / Device Role / Timing Role: Detects VCC decay below +1.67V and VCC2 decay below +1.665V to force controlled shutdown before ADC reference collapse. Use Value: Maintains measurement integrity by asserting reset before analog section enters undefined operating region. |
Use Scenario: Medical infusion pump MCU requiring fail-safe reset on any supply anomaly. IC Role / Device Role / Timing Role: Provides redundant supervision of main 3.3V logic rail and isolated 1.8V sensor interface rail; watchdog monitors firmware execution. Use Value: Meets IEC 62304 Class C requirements via dual-rail monitoring, 140ms minimum reset hold, and glitch-immune MR input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6829WIUT+ | Active-low push-pull RESET output; identical VCC/VCC2 thresholds and watchdog specs | Requires inverted reset logic on µP side; incompatible with active-high reset inputs | Select when target µP accepts active-low reset and board layout cannot accommodate level-shifting |
| TPS3808G18DBVR | Single-supply supervisor (monitors only VCC); 1.8V fixed threshold; open-drain RESET; no VCC2 input | Lacks secondary supply monitoring - requires second supervisor or redesign to single-rail architecture | Choose only if system uses single 1.8V rail and space constraints preclude dual-supervisor solution |
Compared with MAX6829WIUT+, the MAX6830WIUT+ provides active-high RESET compatibility with modern low-voltage MCUs; compared with TPS3808G18DBVR, it delivers integrated dual-rail supervision in same footprint, reducing component count and validation effort.
Availability
MAX6830WIUT+ is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, intelligent instruments, and critical µP monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6830WIUT+ 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, medical, and communications applications.
The MAX6826–MAX6831 family delivers ultra-low-voltage dual-supply supervision in minimal SOT23 footprint, targeting space-constrained, battery-sensitive systems where reliability under brownout and transient conditions is non-negotiable.
FAQ
What is the exact VCC2 reset threshold voltage for MAX6830WIUT+?
The MAX6830WIUT+ has a factory-trimmed VCC2 threshold of +1.665V, with ±0.03V tolerance over –40°C to +125°C. This value is specified in the Electrical Characteristics table under "VCC2 Reset Threshold" for suffix W, and is fixed - not adjustable via external resistors. The MAX6830WIUT+ does not use the RESET IN pin; VCC2 is monitored directly on Pin 5.
Does MAX6830WIUT+ support active-high or active-low reset output?
The MAX6830WIUT+ provides an active-high push-pull RESET output (Pin 1). When a fault occurs - such as VCC or VCC2 dropping below threshold, MR assertion, or watchdog timeout - RESET goes high and remains high for the full reset timeout period (min 140ms). This matches µPs with active-high reset inputs like many ARM Cortex-M series devices. The MAX6830WIUT+ does not offer active-low output; that function is implemented in MAX6829WIUT+.
Can the watchdog timer in MAX6830WIUT+ be disabled?
Yes, the watchdog timer in MAX6830WIUT+ is disabled by leaving the WDI pin (Pin 4) unconnected or driving it with a three-stated output. When WDI is floating, the internal watchdog driver cycles low-high-low every ~1.4s, preventing timeout. No configuration register or external signal is needed - disable is hardware-based and immediate. The MAX6830WIUT+ datasheet confirms this behavior in the "Watchdog Input" section.
What is the minimum VCC voltage at which MAX6830WIUT+ guarantees correct reset assertion?
The MAX6830WIUT+ guarantees correct reset assertion and timing down to VCC = +1.2V over the full –40°C to +125°C operating temperature range. Below +1.2V, reset behavior is not characterized. This specification is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics tables, and distinguishes the MAX6830WIUT+ from higher-VCC supervisors that require ≥1.7V.
Is MAX6830WIUT+ pin-compatible with other members of the MAX6826–MAX6831 family?
Yes, all MAX6826–MAX6831 variants, including MAX6830WIUT+, share identical 6-pin SOT23 pinout (U6+1 package). Pin functions are consistent across the family: Pin 1 = RESET, Pin 2 = GND, Pin 3 = MR, Pin 4 = WDI, Pin 5 = VCC2 (or RESET IN), Pin 6 = VCC. However, functional differences exist - e.g., MAX6830WIUT+ uses Pin 5 as VCC2, while MAX6826WIUT+ uses it as RESET IN - so schematic design must match the specific variant's function map.
MAX6830WIUT+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.388V, 1.67V
- 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:
- SOT-6
MAX6830WIUT+ FAQ
1.How can I place an order for MAX6830WIUT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6830WIUT+ 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 MAX6830WIUT+ reliable?
The price and inventory of MAX6830WIUT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6830WIUT+ is usually 5 days.
3.What payment methods are accepted for MAX6830WIUT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6830WIUT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6830WIUT+?
MAX6830WIUT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6830WIUT+ 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 MAX6830WIUT+?
For technical support, including MAX6830WIUT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6830WIUT+ requirements.
6.How does Aetrix verify that MAX6830WIUT+ is sourced from the original manufacturer or authorized distributors?
All MAX6830WIUT+ 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 MAX6830WIUT+ meets industry standards.
7.What is the process for return or replacement of MAX6830WIUT+?
All MAX6830WIUT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6830WIUT+, 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 MAX6830WIUT+ part is unused and in its original packaging.
Return procedure for MAX6830WIUT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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