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Analog Devices Inc./Maxim Integrated MAX6830ZWUT
- Part No.:
- MAX6830ZWUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6830ZWUT.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,310
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Product details
Overview
MAX6830ZWUT from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring primary supply (VCC) and secondary supply (VCC2) with factory-trimmed 2.313V VCC threshold and 0.788V VCC2 threshold, 140ms min reset timeout, push-pull active-high RESET output, manual reset input, and 1.6s watchdog timer - used in battery-powered embedded controllers requiring reliable brownout detection and system-level reset coordination.
For engineers reviewing the MAX6830ZWUT datasheet, MAX6830ZWUT pinout, MAX6830ZWUT application, or MAX6830ZWUT equivalent, this page delivers verified electrical parameters, exact pin functions, real-world use cases for multivoltage systems, and validated alternative parts with documented functional differences.
Technical Context
The MAX6830ZWUT implements dual independent voltage monitoring: VCC monitored against 2.313V (Z suffix), VCC2 monitored against 0.788V (W suffix), both with 60ppm/°C temperature coefficient and hysteresis. It asserts an active-high push-pull RESET when either supply falls below its threshold, MR is pulled low, or WDI fails to toggle within 1.6s.
Its internal reset timeout generator guarantees ≥140ms assertion after recovery, while MR features a 50kΩ internal pullup and 200ns response delay. The device operates down to VCC = +1.0V and maintains valid RESET output across full -40°C to +125°C industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 2.313V ±0.007V (Z suffix); ensures precise power-up sequencing for 2.5V I/O rails |
| VCC2 Threshold | 0.788V ±0.005V (W suffix); factory-trimmed for accurate core voltage monitoring at 0.8V–0.9V |
| Reset Timeout | 140ms minimum; prevents premature µP release during slow-rising supplies |
| Watchdog Period | 1.6s nominal; detects firmware hangs in deeply embedded applications |
| Operating Voltage | +2.1V to +2.75V VCC range; supports low-power 2.5V systems with margin |
| RESET Output | Active-high push-pull; drives µP reset pin directly without external pullup |
| Supply Current | 30µA max at -40°C to +125°C; enables multi-year battery life in portable equipment |
Pinout & Package
MAX6830ZWUT is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant, lead-free option available as MAX6830ZWUT+T.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; asserts high during fault conditions and holds for ≥140ms post-recovery |
| 2 | GND | Ground reference for all internal comparators and logic; must be low-impedance connection |
| 3 | MR | Manual reset input, active-low with 50kΩ internal pullup; initiates reset on falling edge, holds for timeout after rising edge |
| 4 | WDI | Watchdog input; toggling required every ≤1.6s; unconnected or three-stated disables watchdog |
| 5 | VCC2 | Secondary supply monitor input; connected directly to 0.9V–2.5V rail for factory-trimmed 0.788V threshold detection |
| 6 | VCC | Primary supply input; powers internal circuitry and sets 2.313V reset threshold for main system rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC and VCC2 supervision with separate thresholds avoids single-point failure in multirail systems |
| Guaranteed operation down to VCC = +1.0V | Ensures valid reset assertion even during deep brownout, critical for fail-safe shutdown in automotive modules |
| No external components required | Eliminates discrete resistors, capacitors, and timing elements-reduces BOM count and layout area by >3 components |
| Immunity to short negative VCC transients | Tolerates ≤20µs, 100mV undershoot without false reset-enables robust operation in noisy power environments |
| 1.6s watchdog with glitch rejection | 50ns minimum WDI pulse width acceptance prevents spurious resets from EMI-induced edges |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Wearable health monitor with 2.5V I/O rail and 0.8V ARM Cortex-M0+ core supply. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting active-high RESET to halt processor during VCC2 brownout before data corruption occurs. Use Value: Prevents invalid sensor readouts and flash write errors by enforcing 140ms minimum reset hold time after 0.788V VCC2 recovery. | Use Scenario: Industrial PLC module with isolated 3.3V communication interface and 2.5V logic supply. IC Role / Device Role / Timing Role: Primary VCC (2.313V threshold) monitors 2.5V rail; VCC2 (0.788V) monitors 0.8V FPGA configuration voltage. Use Value: Enables deterministic startup sequence where FPGA config completes before CPU boot, avoiding configuration lockup. |
| Intelligent Instruments | Automotive Systems |
Use Scenario: Handheld multimeter with lithium coin-cell battery and dual-domain ADC subsystem. IC Role / Device Role / Timing Role: MR input tied to front-panel reset button; WDI fed by ADC conversion interrupt to detect firmware freeze. Use Value: Manual reset forces full reinitialization; 1.6s watchdog timeout catches stalled measurement loops without user intervention. | Use Scenario: Body control module with 12V-to-2.5V DC/DC converter and 1.2V microcontroller core. IC Role / Device Role / Timing Role: VCC monitors 2.5V I/O supply; VCC2 monitors 1.2V core via resistor divider (scaled from 0.788V reference). Use Value: Factory-trimmed thresholds eliminate calibration overhead; guaranteed operation to VCC = +1.0V meets ISO 7637-2 pulse 4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6827ZWUT | Same VCC/VCC2 thresholds (2.313V/0.788V), but active-low push-pull RESET output | Requires inverted reset logic on µP side; incompatible with active-high reset pins without level-shifting | Select only if target microcontroller accepts active-low reset and board layout accommodates polarity inversion |
| TPS3808G125DBVR | Single-supply monitor (1.25V threshold), no VCC2 input or watchdog; 200ms reset timeout | Lacks dual-rail monitoring and watchdog functionality; suitable only for basic VCC-only supervision | Choose only when secondary supply monitoring and watchdog are not required, and 1.25V threshold matches system needs |
Compared with MAX6830ZWUT, MAX6827ZWUT provides identical voltage monitoring but inverted RESET polarity, while TPS3808G125DBVR omits VCC2 supervision and watchdog-making MAX6830ZWUT uniquely suited for compact dual-rail systems needing coordinated reset and firmware hang detection.
Availability
MAX6830ZWUT is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, and intelligent instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6830ZWUT 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 connectivity applications, with emphasis on reliability and integration for harsh environments.
The MAX6826–MAX6831 family was engineered specifically for ultra-low-voltage dual-rail microprocessor supervision in space-constrained, battery-sensitive systems-delivering factory-trimmed thresholds, integrated watchdog, and guaranteed operation down to 1.0V VCC.
FAQ
What is the exact VCC2 reset threshold voltage for MAX6830ZWUT?
The MAX6830ZWUT has a factory-trimmed VCC2 reset threshold of 0.788V ±0.005V over -40°C to +125°C, corresponding to the 'W' suffix in its ordering code. This value is specified in the Electrical Characteristics table under VTH2 parameter for the W grade, and applies directly to the VCC2 pin without external components.
Does MAX6830ZWUT support active-high or active-low reset output?
MAX6830ZWUT provides an active-high push-pull RESET output, as confirmed by the Selector Guide and Pin Description tables. When a fault condition occurs (VCC or VCC2 drop below threshold, MR pulled low, or WDI timeout), RESET goes high and remains high for ≥140ms after recovery - matching µPs with active-high reset inputs like many ARM Cortex-M series devices.
Can MAX6830ZWUT monitor a 1.2V supply using the VCC2 pin?
No - the VCC2 pin on MAX6830ZWUT is factory-trimmed to 0.788V and cannot be adjusted. To monitor a 1.2V rail, use a resistor divider to scale it down to 0.788V at VCC2, ensuring the Thevenin equivalent resistance stays below 10kΩ to avoid threshold error. Direct connection of 1.2V to VCC2 will not trigger reset.
What is the watchdog timeout period for MAX6830ZWUT, and how is it cleared?
The MAX6830ZWUT watchdog timeout period is 1.6s nominal. It is cleared by any rising or falling edge on the WDI pin, by assertion of MR, or by internal reset assertion. The timer restarts immediately upon release of reset, and does not count while RESET is asserted - ensuring deterministic behavior during power-up sequences.
Is MAX6830ZWUT compatible with 1.8V VCC operation?
Yes - MAX6830ZWUT is rated for VCC = +2.1V to +2.75V per the Electrical Characteristics table, making it compatible with 2.5V nominal supplies. While 1.8V is below its specified minimum, operation at 1.8V is not guaranteed: the device may fail to assert valid RESET or meet timing specs. Use MAX6830YWUT (Y suffix, 2.19V VCC threshold) for 1.8V systems.
MAX6830ZWUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.665V, 2.32V
- 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-23-6
MAX6830ZWUT FAQ
1.How can I place an order for MAX6830ZWUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6830ZWUT 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 MAX6830ZWUT reliable?
The price and inventory of MAX6830ZWUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6830ZWUT is usually 5 days.
3.What payment methods are accepted for MAX6830ZWUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6830ZWUT transactions.
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4.How is shipping managed for MAX6830ZWUT?
MAX6830ZWUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6830ZWUT 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 MAX6830ZWUT?
For technical support, including MAX6830ZWUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6830ZWUT requirements.
6.How does Aetrix verify that MAX6830ZWUT is sourced from the original manufacturer or authorized distributors?
All MAX6830ZWUT 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 MAX6830ZWUT meets industry standards.
7.What is the process for return or replacement of MAX6830ZWUT?
All MAX6830ZWUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX6830ZWUT, 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 MAX6830ZWUT part is unused and in its original packaging.
Return procedure for MAX6830ZWUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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