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Analog Devices Inc./Maxim Integrated MAX6362PUT46
- Part No.:
- MAX6362PUT46
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362PUT46.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,869
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Product details
Overview
MAX6362PUT46 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 with 150ms timeout, and supports backup-battery switchover for SRAM retention in brownout conditions. Used in portable instrumentation and industrial controllers requiring reliable power monitoring.
For engineers reviewing the MAX6362PUT46 datasheet, MAX6362PUT46 pinout, MAX6362PUT46 application, or MAX6362PUT46 equivalent, this page provides verified functional identity, SOT23-6 pin mapping, watchdog timing behavior, battery switchover hysteresis, and direct alternatives with documented threshold and output structure differences.
Technical Context
The MAX6362PUT46 implements a dedicated watchdog timer with 1.6s nominal timeout (1.0–2.25s over temperature), triggered by sustained high/low state on WDI pin. Its reset logic combines VCC voltage monitoring against 4.63V threshold, manual reset assertion via MR (not present on MAX6362), and automatic battery switchover when VCC falls below VBATT − 0.15V.
It features dual-supply operation: VCC powers normal mode (up to 5.5V), while BATT supplies OUT during brownout. The device guarantees RESET/RESET validity down to 1.2V on either supply rail and includes 100ns glitch immunity on WDI and MR inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory-preset, ±1.5% over -40°C to +85°C) - sets precise brownout detection point for +5V systems |
| Watchdog Timeout | 1.6s typical (1.0–2.25s range) - defines maximum software execution window before forced reset |
| Reset Timeout Period | 150ms minimum - ensures µP completes full power-up initialization before release |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT) - enables operation directly from Li+ battery or low-voltage rails |
| Quiescent Current | 15µA typical at VCC = 5.5V - minimizes standby power in battery-backed systems |
| Battery Switchover Hysteresis | 40mV (VBATT − VCC ≥ 20mV to engage; VCC − VBATT ≥ 20mV to disengage) - prevents oscillation during slow supply transitions |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration and level translation with external pull-up |
Pinout & Package
Package: 6-pin SOT23 (U6-1, outline 21-0058), RoHS-compliant, -40°C to +85°C operating range.
| 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 | Common return path for VCC, VBATT, 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; OUT sourced from VCC when above 4.63V; reset asserted when VCC < 4.63V |
| 5: OUT | Power output | Delivers regulated power to SRAM or real-time clock; switches to BATT when VCC drops below VBATT − 0.15V |
| 6: BATT | Backup battery input | Secondary supply; powers OUT during brownout; draws ≤0.05µA standby current when VCC active |
Key Features
| Feature | Design Value |
|---|---|
| Watchdog timer with 1.6s timeout | Enables autonomous software hang detection without µP intervention; eliminates need for external timer IC |
| 40mV battery switchover hysteresis | Prevents chattering during slow VCC ramp-down/ramp-up, ensuring stable SRAM power handover |
| 150ms reset timeout period | Guarantees sufficient hold time for µP power-on reset sequence across voltage and temperature extremes |
| 1.2V minimum operating voltage | Supports direct interface with single-cell Li+ batteries (2.5–4.2V) and ultra-low-power microcontrollers |
| 100ns glitch immunity on WDI | Rejects EMI-induced noise on watchdog line without requiring external RC filtering |
Applications
| Portable Medical Instrumentation | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Handheld blood glucose meter with nonvolatile memory retention during battery replacement. IC Role / Device Role / Timing Role: MAX6362PUT46 monitors main supply and asserts RESET while switching OUT to backup coin cell; watchdog verifies firmware execution integrity. Use Value: Prevents memory corruption during hot-swap battery events and detects frozen measurement routines. | Use Scenario: Remote sensor node powered by 24VDC supply with local supercapacitor backup. IC Role / Device Role / Timing Role: MAX6362PUT46 provides brownout reset at 4.63V threshold and triggers watchdog reset if Modbus RTU stack stalls. Use Value: Ensures deterministic recovery from transient line faults and software lockups without field service. |
| Point-of-Sale Terminal | Smart Energy Meter |
Use Scenario: Credit card reader with EEPROM-based transaction log and battery-backed RTC. IC Role / Device Role / Timing Role: MAX6362PUT46 sources power to RTC/SRAM from BATT during AC failure and asserts RESET to halt processor writes. Use Value: Guarantees atomic write completion and preserves last valid transaction timestamp. | Use Scenario: Revenue-grade meter with tamper-detection logic and flash memory logging. IC Role / Device Role / Timing Role: MAX6362PUT46 monitors 3.3V logic rail and initiates watchdog-triggered reset if anti-tampering firmware hangs. Use Value: Maintains regulatory compliance by enforcing fail-safe behavior during security-critical operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT46 | Same 4.63V threshold and watchdog function, but offered in leaded (Pb) SOT23-6 package instead of lead-free (+T) | Compatible in legacy manufacturing lines requiring Pb-based soldering profiles | Select when RoHS exemption applies or Pb-free reflow is not available |
| TPS3808G33DBVR | 3.3V reset threshold, no integrated watchdog, push-pull RESET output, 1.8–6V supply range | Suitable for fixed 3.3V systems without watchdog requirement; lacks battery switchover capability | Choose only if system does not require battery backup or watchdog functionality |
Compared with MAX6362PUT46, MAX6362HUT46 offers identical electrical behavior but differs in RoHS compliance status, while TPS3808G33DBVR provides lower-threshold supervision without battery management-making it unsuitable for SRAM retention or watchdog-dependent designs.
Availability
MAX6362PUT46 is available at Aetrix Electronics and suitable for portable instrumentation, industrial control modules, point-of-sale terminals, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX6362PUT46 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.
The MAX6361–MAX6364 family targets microprocessor-based systems needing compact, low-power supervision with battery switchover-specifically engineered for SRAM retention, brownout recovery, and watchdog-driven firmware validation.
FAQ
What is the exact reset threshold voltage of the MAX6362PUT46?
The MAX6362PUT46 has a factory-trimmed reset threshold of 4.63V, with guaranteed tolerance of ±1.5% over the full -40°C to +85°C temperature range. This value is specified in the Electrical Characteristics table under "Reset Threshold (VTH)" with MIN/TYP/MAX values of 4.50V/4.63V/4.75V. The threshold remains stable across supply voltage variations and load conditions, enabling precise brownout detection in +5V systems.
Does the MAX6362PUT46 include a manual reset input (MR)?
No, the MAX6362PUT46 does not include a manual reset input. The MR pin is exclusive to the MAX6361 variant. The MAX6362PUT46 features WDI (watchdog input) on Pin 3 instead, which serves as the primary reset initiation mechanism beyond VCC monitoring. This distinction is confirmed in the Pin Configurations section and Selector Guide, where MAX6362 devices are explicitly labeled as having WDI functionality-not MR.
How does the battery switchover function work in the MAX6362PUT46?
The MAX6362PUT46 automatically switches OUT from VCC to BATT when two conditions are met: VCC falls below the 4.63V reset threshold, and VCC drops at least 0.15V below VBATT. Switchover hysteresis is 40mV (20mV engagement + 20mV disengagement), preventing oscillation. During switchover, OUT remains powered, supporting SRAM retention. The device draws only 0.05µA from BATT in standby, as verified in the Electrical Characteristics table under "BATT Standby Current".
What is the watchdog timeout period for the MAX6362PUT46, and how is it cleared?
The MAX6362PUT46 watchdog timeout period is 1.6s typical (1.0–2.25s over temperature). It is cleared by any rising or falling edge on the WDI pin within that interval. If WDI remains static (high or low) longer than the timeout, a reset pulse is generated on the RESET output for 150ms. The timer also resets automatically whenever RESET is asserted-ensuring synchronization with power-cycle events.
Can the MAX6362PUT46 operate with a 1.8V supply voltage?
Yes, the MAX6362PUT46 operates from +1.2V to +5.5V on either VCC or VBATT, making 1.8V fully supported. Its RESET output remains valid down to 1.2V, and quiescent current is only 11µA at VCC = 2.8V (per Electrical Characteristics). However, the 4.63V reset threshold means it will assert reset continuously at 1.8V-so it must be used in systems where 1.8V is the backup rail (VBATT) while main supply (VCC) is ≥4.63V, or vice versa with appropriate voltage translation.
MAX6362PUT46 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:
- 4.63V
- 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
MAX6362PUT46 FAQ
1.How can I place an order for MAX6362PUT46 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362PUT46 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 MAX6362PUT46 reliable?
The price and inventory of MAX6362PUT46 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362PUT46 is usually 5 days.
3.What payment methods are accepted for MAX6362PUT46?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362PUT46 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362PUT46?
MAX6362PUT46 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362PUT46 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 MAX6362PUT46?
For technical support, including MAX6362PUT46 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362PUT46 requirements.
6.How does Aetrix verify that MAX6362PUT46 is sourced from the original manufacturer or authorized distributors?
All MAX6362PUT46 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 MAX6362PUT46 meets industry standards.
7.What is the process for return or replacement of MAX6362PUT46?
All MAX6362PUT46 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362PUT46, 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 MAX6362PUT46 part is unused and in its original packaging.
Return procedure for MAX6362PUT46:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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