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Analog Devices Inc./Maxim Integrated MAX6362PUT26-T
- Part No.:
- MAX6362PUT26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362PUT26-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6362PUT26-T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, battery switchover, and power-fail warning functionality. It operates from +1.2V supply, features factory-preset 2.63V reset threshold, 1.6s watchdog timeout, and active-low open-drain reset output in a 6-pin SOT23 package. It is used in portable/battery-powered equipment to ensure reliable µP reset during brownout or software hang.
For engineers reviewing the MAX6362PUT26-T datasheet, MAX6362PUT26-T pinout, MAX6362PUT26-T application, or MAX6362PUT26-T equivalent, key selection criteria include guaranteed reset assertion down to 1.2V, 150ms minimum reset timeout, watchdog input (WDI) timing behavior, and battery switchover hysteresis of 40mV between VCC and VBATT.
Technical Context
The MAX6362PUT26-T implements a precision voltage monitor with ±1.5% reset threshold accuracy over -40°C to +85°C, combined with a monolithic watchdog timer that triggers reset pulses upon WDI inactivity exceeding 1.6s. Its internal MOSFET enables automatic battery backup switchover when VCC falls below both the 2.63V threshold and VBATT by ≥20mV.
Reset assertion is guaranteed for VCC or VBATT ≥1.2V; the device maintains valid RESET/RESET states across full supply range. The WDI input accepts TTL/CMOS logic levels, clears on any edge (rising or falling), and requires ≥100ns pulse width to prevent spurious timeouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (factory-preset, ±1.5% over temperature) - ensures reliable detection of 2.5V system rail brownout |
| Watchdog Timeout | 1.6s (typical) - provides sufficient margin for firmware execution loops without false triggering |
| Reset Timeout Period | 150ms (minimum) - guarantees µP holds reset long enough for stable power-up sequencing |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT) - supports single-cell Li+ and multi-rail embedded systems |
| Quiescent Current | 11µA (typical at VCC = 2.8V) - enables multi-year battery life in always-on backup mode |
| Battery Switchover Hysteresis | 40mV (VBATT − VCC) - prevents oscillation during slow VCC decay near threshold |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 2.9mm × 1.6mm × 1.1mm height), RoHS-compliant, tape-and-reel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC < 2.63V, WDI timeout, or power-down; requires external pull-up for µP reset interface |
| 2: GND | Ground reference | Common return path for VCC, VBATT, and all internal comparators; must be low-impedance |
| 3: WDI | Watchdog input | Edge-sensitive input; rising/falling edges within 1.6s clear internal timer; static high/low >1.6s triggers reset pulse |
| 4: VCC | Main supply input | Primary power source; powers internal circuitry and supplies OUT when above reset threshold |
| 5: OUT | Switchover output | Connects to VCC (if VCC > VTH) or VBATT (if VCC < VTH and VBATT > VCC + 20mV); drives SRAM or real-time clock |
| 6: BATT | Backup battery input | Provides backup power during VCC failure; internal MOSFET connects BATT to OUT only when VCC < VTH and VBATT > VCC + 20mV |
Key Features
| Feature | Design Value |
|---|---|
| Watchdog timer with 1.6s timeout | Enables autonomous recovery from firmware lockup without host processor intervention |
| Guaranteed operation down to 1.2V | Ensures functional reset assertion even during deep brownout or single-cell Li+ discharge |
| 150ms minimum reset timeout | Meets JEDEC JESD78 reliability requirements for µP initialization stability |
| 40mV battery switchover hysteresis | Eliminates chattering during gradual VCC decay, preserving SRAM data integrity |
| Low 11µA quiescent current | Extends battery life in backup mode beyond 10 years for typical 20mAh coin cell |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered glucose meter with SRAM-backed calibration data and real-time clock. IC Role / Device Role / Timing Role: Supervisory IC providing VCC brownout detection, WDI-based firmware health monitoring, and seamless battery switchover to preserve memory contents. Use Value: Prevents data corruption during battery replacement or low-voltage operation; 1.6s watchdog interval aligns with clinical measurement cycle timing. | Use Scenario: Remote environmental sensor node operating on primary battery with backup supercapacitor. IC Role / Device Role / Timing Role: Power supervisor asserting reset during mains loss and enabling backup power delivery to MCU and nonvolatile memory. Use Value: 2.63V threshold matches 2.5V LDO output; 150ms reset timeout ensures clean MCU boot before sensor sampling resumes. |
| POS Terminals | Smart Meters |
Use Scenario: Handheld point-of-sale terminal with flash memory and secure element requiring deterministic reset behavior. IC Role / Device Role / Timing Role: Reset generator with manual reset capability (via WDI toggling) and power-fail warning for transaction rollback. Use Value: Active-low open-drain RESET interfaces directly with standard µP reset pins; 1.2V operation supports ultra-low-power sleep modes. | Use Scenario: Electricity meter with tamper-detection circuitry and EEPROM storing billing history. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors main 3.3V rail and asserts reset if voltage drops below 2.63V; enables battery-backed RTC during outage. Use Value: Factory-trimmed 2.63V threshold eliminates external resistor network; 40mV hysteresis prevents false switchover during line transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT26-T | Same 2.63V threshold and watchdog function, but offered in leaded (non-RoHS) SOT23 package | Identical electrical performance; differs only in Pb content and JEDEC moisture sensitivity level | Select when legacy leaded assembly process or specific RoHS exemption applies |
| TPS3808G33DBVR | Fixed 3.3V reset threshold, no integrated watchdog timer, 350ms reset timeout, 2.5µA IQ | Lacks WDI functionality; suited for simple power-monitoring-only use cases without firmware supervision | Choose when watchdog capability is unnecessary and lower quiescent current is prioritized over dual-supervision features |
Compared with MAX6362HUT26-T, the MAX6362PUT26-T offers identical supervision functionality in a RoHS-compliant package; compared with TPS3808G33DBVR, it adds critical watchdog protection at the cost of higher IQ and fixed 2.63V threshold - making it optimal for battery-backed systems requiring both power and software fault resilience.
Availability
MAX6362PUT26-T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, smart meters, and battery-backed memory retention systems requiring stable component supply across extended product lifecycles.
Supply support for MAX6362PUT26-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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.
The MAX6361–MAX6364 family was engineered specifically for µP systems needing integrated power monitoring, battery backup control, and watchdog supervision in space-constrained, low-power environments.
FAQ
What is the exact reset threshold voltage of the MAX6362PUT26-T?
The MAX6362PUT26-T has a factory-preset reset threshold of 2.63V, with guaranteed tolerance of ±1.5% over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and does not require external components. The 26 suffix in MAX6362PUT26-T explicitly denotes the 2.63V threshold variant per Maxim's ordering guide.
Does the MAX6362PUT26-T support battery backup switchover, and what are the conditions?
Yes, the MAX6362PUT26-T supports automatic battery backup switchover. It connects BATT to OUT only when two conditions are met simultaneously: VCC falls below the 2.63V reset threshold, and VBATT exceeds VCC by at least 20mV. A 40mV hysteresis prevents oscillation during slow VCC decay. The device will not power up from BATT alone - initial startup requires VCC.
How does the watchdog timer in the MAX6362PUT26-T operate, and what is its timeout period?
The MAX6362PUT26-T watchdog timer monitors the WDI input and triggers a reset pulse if WDI remains static (high or low) for longer than 1.6s (typical). Any rising or falling edge on WDI resets the timer. The timeout is guaranteed between 1.00s and 2.25s over temperature. After timeout, RESET asserts for the 150ms minimum reset timeout period.
Can the MAX6362PUT26-T operate with supply voltages below 2.5V, and is reset functionality guaranteed?
Yes, the MAX6362PUT26-T operates from +1.2V to +5.5V on either VCC or VBATT, and reset assertion is guaranteed down to 1.2V. Both RESET and RESET outputs remain valid and functional across this entire supply range, enabling use in ultra-low-voltage applications such as single-cell Li+ or NiMH battery systems where voltage may dip below 2.5V during discharge.
What package type and footprint does the MAX6362PUT26-T use, and are there layout considerations?
The MAX6362PUT26-T uses a 6-pin SOT23 package (outline U6-1, land pattern 90-0175). Critical layout practices include placing a 0.1µF ceramic bypass capacitor between VCC and GND as close as possible to the device, routing WDI with minimal stub length to reduce noise susceptibility, and ensuring low-impedance GND connection to maintain comparator accuracy and transient immunity.
MAX6362PUT26-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:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6362PUT26-T FAQ
1.How can I place an order for MAX6362PUT26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362PUT26-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 MAX6362PUT26-T reliable?
The price and inventory of MAX6362PUT26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362PUT26-T is usually 5 days.
3.What payment methods are accepted for MAX6362PUT26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362PUT26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362PUT26-T?
MAX6362PUT26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362PUT26-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 MAX6362PUT26-T?
For technical support, including MAX6362PUT26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362PUT26-T requirements.
6.How does Aetrix verify that MAX6362PUT26-T is sourced from the original manufacturer or authorized distributors?
All MAX6362PUT26-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 MAX6362PUT26-T meets industry standards.
7.What is the process for return or replacement of MAX6362PUT26-T?
All MAX6362PUT26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362PUT26-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 MAX6362PUT26-T part is unused and in its original packaging.
Return procedure for MAX6362PUT26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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