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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:1,750
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Product details
Overview
MAX6830ZWUT+ from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring primary VCC (1.53V–2.0V range) and secondary VCC2 (2.24V–2.39V) with factory-trimmed thresholds, push-pull active-high RESET output, manual reset input, and 1.6s watchdog timeout - used in battery-powered embedded controllers requiring reliable brownout detection and system recovery.
For engineers reviewing the MAX6830ZWUT+ datasheet, MAX6830ZWUT+ pinout, MAX6830ZWUT+ application, or MAX6830ZWUT+ equivalent, key selection considerations include its Z-suffix VCC threshold (1.67V typ), W-suffix VCC2 threshold (2.313V typ), guaranteed reset validity down to VCC = +1.2V, push-pull active-high RESET logic, and -40°C to +125°C operation in compact SOT23-6.
Technical Context
The MAX6830ZWUT+ integrates two independent voltage monitors: one for primary supply VCC (Z-threshold: 1.61V–1.72V over temperature) and one for secondary supply VCC2 (W-threshold: 2.238V–2.388V over temperature), both feeding into an OR logic gate that triggers reset assertion. Its internal watchdog timer clears on any WDI edge and times out after 0.80s–2.60s if unrefreshed.
Reset assertion is synchronized with a 100ms–320ms timeout delay (140ms min), and the push-pull RESET output drives high during reset with VOH ≥ 0.8 × VCC at ISOURCE = 1µA–800µA. MR input includes a 25kΩ–75kΩ internal pullup and responds to sub-microsecond pulses with 100ns glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 1.61V–1.72V (Z-suffix, -40°C to +125°C); sets primary supply brownout detection point for 1.53V–2.0V systems |
| VCC2 Threshold | 2.238V–2.388V (W-suffix, -40°C to +125°C); factory-trimmed secondary monitor for 2.1V–2.75V rails |
| RESET Output Type | Push-pull active-high; eliminates external pullup, supports direct interface to µP reset pins requiring high-asserted reset |
| Reset Timeout Period | 100ms–320ms (140ms min); ensures stable power reestablishment before processor release |
| Watchdog Timeout | 0.80s–2.60s (1.6s nominal); detects firmware hangs in deeply embedded applications without external timing components |
| Operating Temperature | -40°C to +125°C; qualified for industrial and automotive under-hood environments |
| Supply Current | 25µA max at VCC = +1.8V, -40°C to +125°C; enables multi-year battery life in portable instrumentation |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant, surface-mountable with 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; asserts high during fault condition and holds for full timeout period |
| 2 | GND | Ground reference for all internal comparators and logic; must be low-impedance connection to system ground plane |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC (50kΩ typical); initiates reset when pulled to GND |
| 4 | WDI | Watchdog input; edge-sensitive (rising/falling); resets internal 1.6s timer on transition; disabled if left floating |
| 5 | VCC2 | Secondary supply input; connects directly to monitored 2.24V–2.39V rail; no external resistor divider required |
| 6 | VCC | Primary supply input; powers device and sets VCC threshold (Z-range: 1.53V–2.0V); valid down to +1.2V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of primary (VCC) and secondary (VCC2) supplies with factory-trimmed thresholds avoids calibration overhead |
| Guaranteed reset validity to VCC = +1.2V | Ensures deterministic reset behavior during deep brownout, critical for fail-safe shutdown in safety-critical instruments |
| No external components required | Eliminates discrete resistors, capacitors, or timing elements - reduces BOM count and PCB area in space-constrained designs |
| Immunity to short negative VCC transients | Withstands ≤20µs glitches down to 100mV below threshold without spurious reset, improving noise robustness in electrically noisy environments |
| Manual reset with integrated pullup | 50kΩ internal MR pullup enables momentary switch interface without external biasing, simplifying front-panel reset implementation |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Handheld test meters powered by single Li-ion cell (3.0V–4.2V) with 2.5V LDO supplying MCU core and 1.8V rail for sensors. IC Role / Device Role / Timing Role: MAX6830ZWUT+ monitors both LDO outputs (2.5V and 1.8V) and asserts active-high RESET if either drops below threshold during battery sag or load switching. Use Value: Prevents MCU lockup during transient undervoltage events while consuming only 25µA, extending battery runtime. |
Use Scenario: Industrial PLC I/O module with dual-rail power (3.3V for logic, 2.5V for analog front-end) operating in wide-temperature enclosures. IC Role / Device Role / Timing Role: Supervises 3.3V VCC and 2.5V VCC2 rails; generates 140ms minimum reset pulse to ensure clean boot after power interruption or ESD-induced dropout. Use Value: Guarantees functional safety compliance by enforcing minimum reset hold time across -40°C to +125°C ambient range. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Digital multimeter with ARM Cortex-M0 MCU, 1.8V core supply, and 3.3V display driver - subject to rapid battery discharge and thermal cycling. IC Role / Device Role / Timing Role: MAX6830ZWUT+ uses Z-threshold (1.67V) on VCC and W-threshold (2.313V) on VCC2 to detect simultaneous core and peripheral rail collapse. Use Value: Factory-trimmed thresholds eliminate production calibration, reducing test time and cost in high-volume instrument manufacturing. |
Use Scenario: Medical infusion pump controller where µP reset integrity is mandated by IEC 62304 Class C software safety requirements. IC Role / Device Role / Timing Role: Provides deterministic reset assertion on VCC/VCC2 fault, MR activation, or WDI timeout - with 100% guaranteed operation down to VCC = +1.2V. Use Value: Meets ASIL-B-equivalent hardware fault tolerance by eliminating reset ambiguity during worst-case voltage droop scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6829ZWUT+ | Active-low push-pull RESET output; identical VCC/VCC2 thresholds and watchdog timing | Requires inverted reset logic handling in µP firmware or external inverter; unsuitable for µPs expecting active-high reset | Select MAX6829ZWUT+ only when system architecture mandates active-low reset signaling and board layout cannot accommodate level-shifting. |
| MAX6831ZWUT+ | Open-drain RESET output; same VCC/VCC2 thresholds and watchdog specs | Necessitates external pullup resistor; supports bidirectional µP reset pins (e.g., Motorola 68HC11) without conflict | Choose MAX6831ZWUT+ when interfacing with legacy microcontrollers having shared reset I/O or when bus-wired reset distribution is required. |
Compared with MAX6829ZWUT+ and MAX6831ZWUT+, the MAX6830ZWUT+ provides active-high push-pull RESET - eliminating external components and simplifying firmware integration - while maintaining identical monitoring accuracy, temperature range, and watchdog reliability across all three variants.
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 product 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, mixed-signal, and power management ICs for industrial, medical, communications, and consumer applications.
The MAX6826–MAX6831 family delivers dual-supply microprocessor supervision in ultra-small SOT23 packages, targeting space-constrained, battery-operated, and high-reliability embedded systems where deterministic reset behavior is non-negotiable.
FAQ
What is the exact VCC reset threshold voltage range for MAX6830ZWUT+ over temperature?
The MAX6830ZWUT+ has a Z-suffix VCC threshold specified as 1.61V (min) to 1.72V (max) across -40°C to +125°C operating temperature. This range corresponds to the 1.53V–2.0V primary supply monitoring window and is factory-trimmed - no external calibration is needed. The typical value at +25°C is 1.67V, and the threshold exhibits ±60ppm/°C temperature coefficient.
Does MAX6830ZWUT+ support monitoring of a 2.5V secondary supply?
No, MAX6830ZWUT+ does not support 2.5V VCC2 monitoring. Its W-suffix VCC2 threshold is 2.238V–2.388V (typ 2.313V), optimized for 2.1V–2.75V rails but centered near 2.3V. For 2.5V secondary monitoring, select MAX6830SVUT+ (S-suffix VCC2 = 2.83V–3.02V) or MAX6830YVUT+ (Y-suffix VCC2 = 2.113V–2.263V) - the W-suffix is specifically trimmed for ~2.3V, not 2.5V.
What is the function of Pin 5 (VCC2) on MAX6830ZWUT+?
Pin 5 (VCC2) on MAX6830ZWUT+ is the dedicated input for the factory-trimmed secondary voltage monitor. It connects directly to the 2.24V–2.39V secondary supply rail - no external resistor divider is required. When VCC2 falls below its W-suffix threshold (2.238V–2.388V), the device asserts the active-high RESET output for the full timeout period, independent of VCC status.
Can MAX6830ZWUT+ operate with VCC as low as 1.0V?
MAX6830ZWUT+ guarantees correct reset state only down to VCC = +1.2V over the full -40°C to +125°C temperature range. While the datasheet notes "guaranteed reset valid down to VCC = +1.0V" for the broader MAX6826–MAX6831 family, the Z-suffix variant (1.53V–2.0V VCC range) is characterized and specified from +1.2V minimum. Operation below +1.2V is outside guaranteed specifications.
How does the watchdog timer behave when WDI is left unconnected on MAX6830ZWUT+?
When WDI is left unconnected on MAX6830ZWUT+, the internal watchdog timer is automatically serviced every ~1.4 seconds by an internal low-high-low pulse, preventing timeout. This disables the watchdog function without requiring external circuitry. However, leakage current must remain below 10µA and load capacitance below 200pF to ensure reliable operation - verified per datasheet Note 1.
MAX6830ZWUT+ 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:
- 1.665V, 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-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.
Note: Certain payment methods may incur a processing fee.
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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