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Analog Devices Inc./Maxim Integrated MAX6362LUT46+T
- Part No.:
- MAX6362LUT46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362LUT46+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,382
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Product details
Overview
MAX6362LUT46+T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, battery switchover, and 4.63V factory-preset reset threshold. It operates from +1.2V supply, delivers active-low open-drain RESET output, and asserts reset during VCC brownout, manual trigger (not applicable), or watchdog timeout. Used in portable/battery-powered equipment to maintain SRAM integrity during power failure.
For engineers reviewing the MAX6362LUT46+T datasheet, MAX6362LUT46+T pinout, MAX6362LUT46+T application, or MAX6362LUT46+T equivalent, key selection criteria include guaranteed reset assertion down to 1.2V, 1.6s watchdog timeout, 150ms minimum reset timeout, SOT23-6 package compatibility, and battery-backup mode behavior with 40mV hysteresis.
Technical Context
The MAX6362LUT46+T implements a dedicated watchdog timer with 1.00–2.25s timeout range (typ. 1.6s) triggered by WDI edge detection; it clears on any rising/falling edge within timeout window and pulses RESET upon expiration. Its internal comparator monitors VCC against a precision 4.63V threshold (±15mV over temperature) and asserts reset when VCC falls below VTH.
Battery switchover logic activates when VCC drops below both VTH and VBATT−0.02V, connecting BATT to OUT via an internal MOSFET with on-resistance dependent on VBATT (e.g., 2.75Ω at VBATT = 4.75V). RESET remains asserted for ≥150ms after VCC rises above VTH, ensuring reliable µP initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory preset, ±15mV over -40°C to +85°C) - ensures reliable detection of +5V supply brownout |
| Watchdog Timeout | 1.6s typical (1.00–2.25s range) - provides sufficient margin for firmware execution loops without false triggers |
| Reset Timeout Period | ≥150ms - guarantees µP reset hold time meets most microcontroller requirements |
| Supply Voltage Range | +1.2V to +5.5V - supports operation directly from single-cell Li+ or regulated 1.2V/1.8V rails |
| Supply Current | 15µA typical at VCC = 5.5V - enables multi-year battery life in always-on backup applications |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration and level translation with external pull-up |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded systems |
Pinout & Package
MAX6362LUT46+T is housed in a RoHS-compliant 6-pin SOT23-6 package (outline U6-1, land pattern 90-0175), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, watchdog timeout, or power-down; requires external pull-up for logic-high state |
| 2: GND | Ground reference | Primary return path for VCC, BATT, and all internal circuitry; must be low-impedance connection |
| 3: WDI | Watchdog input | Edge-sensitive input; rising or falling edge within 1.6s clears watchdog timer; static high/low >1.6s triggers reset pulse |
| 4: VCC | Main supply input | Primary power source; device monitors this rail for reset condition and powers OUT when above VTH |
| 5: OUT | Power output | Switches between VCC and BATT based on voltage comparison; supplies up to 150mA to SRAM or real-time clock |
| 6: BATT | Backup battery input | Secondary power source; connects to OUT only when VCC < VTH and VCC < VBATT − 0.02V (40mV hysteresis) |
Key Features
| Feature | Design Value |
|---|---|
| Watchdog timer with 1.6s timeout | Enables firmware health monitoring without external timing components; eliminates need for discrete RC watchdog circuits |
| Factory-trimmed 4.63V reset threshold | Eliminates external resistor divider for +5V supply monitoring; reduces BOM count and layout area |
| Guaranteed reset operation down to 1.2V | Ensures reliable reset assertion even during deep brownout or single-cell Li+ discharge to end-of-life voltage |
| Integrated battery switchover with 40mV hysteresis | Prevents oscillation during slow VCC ramp-down; maintains clean power transition to backup source |
| Low 15µA quiescent current | Extends battery life in always-connected backup applications; supports >10-year shelf life with CR2032 |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG monitoring unit powered by rechargeable Li+ battery with main DC adapter. IC Role / Device Role / Timing Role: Supervises main 5V rail and triggers watchdog reset if firmware hangs; switches SRAM to backup battery during AC loss. Use Value: Prevents data corruption during power interruption and ensures deterministic recovery from software faults without user intervention. | Use Scenario: Remote environmental sensor node operating on primary 3.3V supply with coin-cell backup. IC Role / Device Role / Timing Role: Monitors 3.3V rail for brownout; asserts reset before µC enters undefined state; manages switchover to backup when VCC drops below 3.08V. Use Value: Guarantees nonvolatile memory retention during extended outages and eliminates need for external reset supervisor IC. |
| Point-of-Sale Terminals | Smart Meters |
Use Scenario: Retail terminal with mains power and supercapacitor backup for transaction finalization. IC Role / Device Role / Timing Role: Detects 5V supply collapse during brief outage; holds µP in reset until capacitor discharges to safe level; initiates graceful shutdown sequence. Use Value: Ensures transaction atomicity and prevents EEPROM write corruption during power loss events. | Use Scenario: Electricity meter with lithium-thionyl chloride primary battery and regulated 3.3V system rail. IC Role / Device Role / Timing Role: Provides precise 4.63V reset threshold for auxiliary 5V metrology supply; asserts watchdog reset if metrology firmware stalls. Use Value: Maintains measurement accuracy certification compliance by preventing erratic behavior during voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT46+T | Same 4.63V threshold and watchdog function, but active-high open-drain RESET output | Requires redesign of reset logic polarity; incompatible with existing active-low reset inputs | Select only when system design mandates active-high reset signaling |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no integrated watchdog timer, 350ms reset timeout, 2.5µA supply current | Lacks battery switchover and watchdog functionality; suitable only for basic power-monitoring without backup or firmware supervision | Choose when cost sensitivity outweighs need for watchdog and battery management features |
Compared with MAX6362HUT46+T and TPS3808G33DBVR, the MAX6362LUT46+T uniquely combines 4.63V precision reset, 1.6s watchdog, and seamless battery switchover in one SOT23-6 package-enabling compact, self-contained power supervision for mission-critical portable systems without external components.
Availability
MAX6362LUT46+T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, point-of-sale terminals, smart meters, and battery-backed memory preservation requiring stable component supply across long production lifecycles.
Supply support for MAX6362LUT46+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 power management, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6361–MAX6364 family was developed specifically for low-power microprocessor supervision with integrated battery backup and watchdog functionality-targeting space-constrained, battery-operated systems where reliability and minimal external components are critical.
FAQ
What is the exact reset threshold voltage of MAX6362LUT46+T?
The MAX6362LUT46+T has a factory-trimmed reset threshold of 4.63V (minimum 4.50V, maximum 4.75V) over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and specified in the Ordering Information table under suffix "46". The MAX6362LUT46+T does not require external resistors to set this threshold.
Does MAX6362LUT46+T support battery backup functionality?
Yes, the MAX6362LUT46+T supports automatic battery switchover: when VCC falls below both the 4.63V reset threshold and VBATT − 0.02V, it connects the BATT pin to the OUT pin via an internal MOSFET. The MAX6362LUT46+T maintains this connection until VCC rises 20mV above VBATT, providing 40mV hysteresis to prevent oscillation during slow voltage ramps.
What is the watchdog timeout period for MAX6362LUT46+T?
MAX6362LUT46+T features a watchdog timer with a nominal timeout period of 1.6 seconds, specified over temperature as 1.00s (min) to 2.25s (max). The timer resets on any rising or falling edge at the WDI pin within this window; sustained high or low state beyond 1.6s triggers a reset pulse on the active-low open-drain RESET output.
Can MAX6362LUT46+T operate from a 1.2V supply?
Yes, MAX6362LUT46+T is fully specified to operate from a minimum supply voltage of +1.2V on either VCC or VBATT. Its internal circuitry-including reset comparator, watchdog timer, and output drivers-functions correctly down to 1.2V, enabling use with single-cell Li+ batteries or ultra-low-voltage systems where other supervisors fail.
What package type and footprint does MAX6362LUT46+T use?
MAX6362LUT46+T uses a 6-pin SOT23-6 package (package code U6-1, outline 21-0058), with standard land pattern 90-0175. It measures 2.9mm × 1.6mm × 1.1mm and is RoHS-compliant (indicated by "+T" suffix). This footprint is compatible with automated assembly and widely supported in PCB design libraries.
MAX6362LUT46+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6362LUT46+T FAQ
1.How can I place an order for MAX6362LUT46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362LUT46+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 MAX6362LUT46+T reliable?
The price and inventory of MAX6362LUT46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362LUT46+T is usually 5 days.
3.What payment methods are accepted for MAX6362LUT46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362LUT46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362LUT46+T?
MAX6362LUT46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362LUT46+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 MAX6362LUT46+T?
For technical support, including MAX6362LUT46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362LUT46+T requirements.
6.How does Aetrix verify that MAX6362LUT46+T is sourced from the original manufacturer or authorized distributors?
All MAX6362LUT46+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 MAX6362LUT46+T meets industry standards.
7.What is the process for return or replacement of MAX6362LUT46+T?
All MAX6362LUT46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362LUT46+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 MAX6362LUT46+T part is unused and in its original packaging.
Return procedure for MAX6362LUT46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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