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Analog Devices Inc./Maxim Integrated MAX6362HUT29-T
- Part No.:
- MAX6362HUT29-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362HUT29-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6362HUT29-T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, designed for battery-backed µP systems requiring reliable power monitoring and fail-safe reset control. It operates from +1.2V supply, features a factory-preset 2.93V reset threshold, 1.6s watchdog timeout, and active-low open-drain RESET output - enabling robust brownout detection and software hang recovery in portable instrumentation and industrial controllers.
For engineers reviewing the MAX6362HUT29-T datasheet, MAX6362HUT29-T pinout, MAX6362HUT29-T application, or MAX6362HUT29-T equivalent, key selection criteria include its SOT23-6 package, guaranteed reset assertion down to 1.2V VCC/VBATT, 150ms minimum reset timeout, watchdog input (WDI) compatibility, and battery switchover capability for SRAM backup power integrity.
Technical Context
The MAX6362HUT29-T implements a precision voltage monitor with ±1.5% reset threshold accuracy over -40°C to +85°C, paired with a monolithic watchdog timer that triggers reset pulses upon WDI inactivity exceeding 1.6s. Its internal comparator references a stable 1.235V bandgap, and reset propagation delay is under 280µs across temperature.
It integrates dual power-path control: OUT sources from VCC when valid (>2.93V), automatically switches to BATT during brownout (VCC < VBATT − 0.2V), and maintains 40mV hysteresis to prevent oscillation. The active-low open-drain RESET output supports pull-up to any logic rail up to 6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% - precisely monitors 3.0V/3.3V rails without external resistors |
| Watchdog Timeout | 1.6s typical - detects µP lockup within defined software execution window |
| Supply Voltage Range | +1.2V to +5.5V - enables operation directly from Li+ battery or low-voltage logic rails |
| Reset Timeout Period | 150ms minimum - ensures µP completes power-up initialization before release |
| Supply Current | 11µA at VCC = 2.8V - extends battery life in always-on backup mode |
| Operating Temperature | -40°C to +85°C - qualified for industrial and automotive-adjacent environments |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration and flexible voltage-level translation |
Pinout & Package
Package: 6-pin SOT23 (U6-1), 1.6mm × 2.9mm footprint, RoHS-compliant lead-free (indicated by "-T" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, WDI timeout, or power-down; requires external pull-up |
| 2 - GND | Ground reference | Common return path for VCC, BATT, and all internal circuitry |
| 3 - WDI | Watchdog input | Edge-sensitive input; rising/falling edges within 1.6s clear internal timer; static high/low triggers reset |
| 4 - VCC | Main supply input | Primary power source; reset asserted when VCC falls below 2.93V |
| 5 - OUT | Power output | Switches between VCC and BATT to maintain SRAM supply during brownout |
| 6 - BATT | Backup battery input | Connects to Li+ or coin cell; activates OUT sourcing when VCC drops below VBATT − 0.2V |
Key Features
| Feature | Design Value |
|---|---|
| Integrated watchdog timer | Eliminates need for external timing components; 1.6s timeout prevents false resets from short glitches |
| Battery switchover with hysteresis | 40mV automatic hysteresis prevents chattering during slow VCC decay near VBATT |
| 1.2V minimum operating voltage | Supports direct connection to single-cell Li+ (2.7–4.2V) or NiMH batteries without LDO |
| Reset valid down to 1.2V | Ensures deterministic reset behavior even as VCC or VBATT depletes to end-of-life |
| 150ms reset timeout | Guarantees sufficient hold time for µP clock stabilization and register initialization |
Applications
| Portable Medical Monitor | Industrial PLC I/O Module |
|---|---|
Use Scenario: Continuous ECG data logging powered by rechargeable Li+ battery with mains fallback. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and triggers watchdog reset if firmware hangs; switches SRAM to BATT during AC loss. Use Value: Prevents data corruption during power transitions and ensures deterministic recovery after brownout or software fault. | Use Scenario: Remote sensor node with isolated 24V DC input and local 3.3V logic, requiring fail-safe restart on supply dip. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail; asserts RESET on undervoltage and uses WDI to detect Modbus stack freeze. Use Value: Eliminates manual intervention by auto-recovering from transient supply sags or communication lockups. |
| Handheld Test Equipment | Smart Energy Meter |
Use Scenario: Battery-operated multimeter with nonvolatile memory storing calibration constants. IC Role / Device Role / Timing Role: Provides VCC brownout reset and battery switchover to preserve SRAM contents during battery swap. Use Value: Enables hot-swap of primary battery without losing calibration data or requiring full reinitialization. | Use Scenario: Revenue-grade meter with backup supercapacitor and real-time clock, needing tamper-proof power fail detection. IC Role / Device Role / Timing Role: Detects 3.3V rail collapse and initiates controlled shutdown while asserting RESET to halt计量 firmware. Use Value: Meets IEC 62053-21 requirements for secure power-fail event logging and state preservation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT31-T | Factory-preset 3.08V reset threshold (vs. 2.93V) | Suitable for 3.3V systems with tighter margin above 3.0V nominal rail | Select when monitoring 3.3V supplies where 2.93V threshold risks premature reset during ripple |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms reset timeout, no integrated watchdog | Lacks WDI functionality; requires external timer or MCU GPIO for watchdog | Choose when only basic reset supervision is needed and watchdog is handled in firmware |
Compared with MAX6362HUT29-T, the MAX6362HUT31-T offers higher reset threshold for improved noise immunity on 3.3V rails, while the TPS3808G33DBVR provides lower quiescent current (1.1µA) but omits watchdog functionality - making it suitable only for simpler supervision tasks without software hang detection.
Availability
MAX6362HUT29-T is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, handheld test equipment, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX6362HUT29-T 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 industrial, communications, and computing applications, with emphasis on reliability and integration.
The MAX6361–MAX6364 family was developed specifically for µP-based systems needing compact, low-power supervision with battery backup and watchdog safety - targeting space-constrained, battery-dependent instrumentation and control hardware.
FAQ
What is the exact reset threshold voltage of the MAX6362HUT29-T?
The MAX6362HUT29-T has a factory-trimmed reset threshold of 2.93V, with ±1.5% accuracy over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and specified in the Electrical Characteristics table of the MAX6361–MAX6364 datasheet. The "29" in the part number explicitly denotes the 2.93V variant.
Does the MAX6362HUT29-T require external components to operate as a watchdog timer?
No, the MAX6362HUT29-T integrates a complete watchdog timer with 1.6s timeout period. Only a single connection from a µP GPIO or bus line to the WDI pin is required. No external capacitors or resistors are needed - the timer is monolithic and calibrated. Edge detection on WDI (rising or falling) clears the timer; static high or low for >1.6s triggers reset.
Can the MAX6362HUT29-T switch power to an external SRAM during VCC brownout?
Yes. The MAX6362HUT29-T's OUT pin automatically switches from VCC to BATT when VCC falls below VBATT − 0.2V, maintaining continuous power to attached SRAM. This switchover is seamless and includes 40mV hysteresis to prevent oscillation. The device guarantees RESET assertion down to 1.2V on either VCC or VBATT, ensuring reliable control throughout the transition.
What package type and footprint does the MAX6362HUT29-T use?
The MAX6362HUT29-T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058), measuring 1.6mm × 2.9mm with 0.95mm pitch. It is RoHS-compliant and lead-free, indicated by the "-T" suffix. Land pattern 90-0175 is recommended per Maxim's package documentation.
Is the MAX6362HUT29-T compatible with 1.8V microcontrollers?
Yes. The MAX6362HUT29-T operates from +1.2V to +5.5V and guarantees RESET assertion down to 1.2V on both VCC and VBATT. Its active-low open-drain RESET output can be pulled up to 1.8V, 3.3V, or 5V logic rails. Input thresholds (e.g., WDI, MR) are CMOS-compatible with VCC-referenced levels, supporting direct interface to 1.8V µPs without level shifters.
MAX6362HUT29-T 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:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6362HUT29-T FAQ
1.How can I place an order for MAX6362HUT29-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362HUT29-T 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 MAX6362HUT29-T reliable?
The price and inventory of MAX6362HUT29-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362HUT29-T is usually 5 days.
3.What payment methods are accepted for MAX6362HUT29-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362HUT29-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362HUT29-T?
MAX6362HUT29-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362HUT29-T 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 MAX6362HUT29-T?
For technical support, including MAX6362HUT29-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362HUT29-T requirements.
6.How does Aetrix verify that MAX6362HUT29-T is sourced from the original manufacturer or authorized distributors?
All MAX6362HUT29-T 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 MAX6362HUT29-T meets industry standards.
7.What is the process for return or replacement of MAX6362HUT29-T?
All MAX6362HUT29-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362HUT29-T, 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 MAX6362HUT29-T part is unused and in its original packaging.
Return procedure for MAX6362HUT29-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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