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Analog Devices Inc./Maxim Integrated MAX6362PUT46-T
- Part No.:
- MAX6362PUT46-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362PUT46-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6362PUT46-T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, designed for power-fail detection and battery switchover in embedded µP systems. It operates from +1.2V supply, features factory-preset 4.63V reset threshold (min), 1.6s watchdog timeout, and active-low open-drain RESET output - used to safeguard SRAM retention during brownout in portable instrumentation.
For engineers reviewing the MAX6362PUT46-T datasheet, MAX6362PUT46-T pinout, MAX6362PUT46-T application, or MAX6362PUT46-T equivalent, key selection criteria include guaranteed reset assertion down to 1.2V VCC/VBATT, 150ms minimum reset timeout, watchdog input (WDI) transient immunity, and SOT23-6 package compatibility with space-constrained industrial control and POS equipment.
Technical Context
The MAX6362PUT46-T implements a precision voltage monitor with ±1.5% 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 continuously monitors VCC against the 4.63V threshold and asserts RESET when VCC falls below it or when WDI remains static beyond timeout.
It integrates dual-path power switching: OUT connects to VCC during normal operation and automatically switches to BATT (if VBATT > VCC + 20mV) during brownout, with MOSFET on-resistance as low as 2.7Ω at VBATT = 2.8V. The device guarantees RESET/RESET validity down to 1.2V and provides 100ns glitch immunity on WDI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory-preset, min spec); ensures reliable reset assertion for +5.0V systems under brownout |
| Watchdog Timeout | 1.6s (typical); enables robust software execution monitoring without false triggers |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT); supports ultra-low-voltage startup and battery-backup operation |
| Reset Timeout Period | 150ms (min); guarantees µP initialization stability after power recovery |
| Supply Current | 15µA (max at VCC = 5.5V); enables multi-year battery life in backup mode |
| WDI Pulse Width | 100ns (min); tolerates fast edge transitions in noisy digital environments |
| Output Type | Active-low open-drain RESET; allows wired-OR configuration with other system reset sources |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, RoHS-compliant, tape-and-reel). Compact footprint (2.9mm × 1.6mm) optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, WDI timeout, or power-up; requires external pull-up for logic-high state |
| 2 - GND | Ground reference | Common return path for VCC, BATT, and all internal circuitry; must be low-impedance connection |
| 3 - WDI | Watchdog input | Edge-sensitive trigger; rising/falling edges within 1.6s clear internal timer; static high/low for >1.6s forces reset pulse |
| 4 - VCC | Main supply input | Primary power source; powers internal circuitry and supplies OUT until brownout condition occurs |
| 5 - OUT | Power output | Delivers regulated power to SRAM; sourced from VCC normally, switches to BATT when VCC < VBATT – 20mV |
| 6 - BATT | Backup battery input | Provides hold-up power during VCC failure; enables seamless switchover with 40mV hysteresis to prevent oscillation |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 4.63V reset threshold | Eliminates external resistor network for +5V rail monitoring; reduces BOM count and layout area |
| Integrated 1.6s watchdog timer | Enables autonomous firmware health-check without MCU intervention; prevents hang-induced system lockup |
| 150ms minimum reset timeout | Ensures µP completes power-on reset sequence before releasing reset, even under slow-ramp supplies |
| Guaranteed 1.2V operation | Supports deep-battery brownout scenarios where VCC drops to near-cell depletion voltage |
| Automatic battery switchover | Maintains SRAM data integrity during AC loss by switching OUT to BATT within microseconds of VCC collapse |
Applications
| Portable Medical Instrumentation | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Handheld blood glucose meters requiring nonvolatile memory retention during battery replacement. IC Role / Device Role / Timing Role: Supervisory circuit providing VCC brownout detection, automatic BATT-to-OUT switchover, and WDI-monitored firmware watchdog. Use Value: Prevents SRAM data loss during hot-swap battery changes via 40mV hysteresis-controlled switchover and 150ms reset hold time. | Use Scenario: DIN-rail mounted programmable logic controller modules operating in unregulated 24V DC environments. IC Role / Device Role / Timing Role: Power supervisor asserting reset during line transients and enabling watchdog-based firmware recovery. Use Value: Guarantees µP reset assertion for transients >100mV below 4.63V threshold, with 100ns WDI glitch immunity preventing spurious resets. |
| Retail Point-of-Sale Terminals | Smart Energy Meters |
Use Scenario: Battery-backed POS terminals experiencing frequent AC outages in retail stores. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors main 5V rail and manages Li+ backup battery switchover to preserve transaction logs. Use Value: Delivers 2.7Ω typical BATT-to-OUT on-resistance at 2.8V, minimizing voltage drop and extending usable backup runtime. | Use Scenario: Utility-grade electricity meters needing tamper-resistant power fail logging during grid instability. IC Role / Device Role / Timing Role: Precision reset generator with ±1.5% threshold accuracy across temperature, synchronized with secure real-time clock backup. Use Value: Ensures deterministic reset timing (150ms min) and accurate 4.63V trip point for compliance with IEC 62053-21 voltage sag immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT46-T | Same electrical specs and pinout; differs only in lead-free packaging (HUT vs PUT) | Identical functional behavior; selected for RoHS-compliant assembly lines requiring matte-tin finish | Choose HUT version when lead-free soldering process mandates SnAgCu reflow profile compatibility |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no integrated watchdog; 1.2V to 6.0V supply range | Lacks WDI functionality; requires external watchdog IC for firmware monitoring | Select only if system already includes discrete watchdog or uses simpler reset-only supervision |
Compared with MAX6362HUT46-T, the MAX6362PUT46-T offers identical supervision performance with standard leaded packaging, while TPS3808G33DBVR provides lower-cost reset-only functionality but necessitates additional components to replicate watchdog capability - increasing board area and validation effort.
Availability
MAX6362PUT46-T is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC I/O modules, and retail POS terminals requiring stable component supply with long-term lifecycle support.
Supply support for MAX6362PUT46-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, automotive, and communications applications.
The MAX6361–MAX6364 family was engineered specifically for low-power µP supervision in battery-critical systems, integrating reset, watchdog, and battery switchover functions into a single 6-pin SOT23 package.
FAQ
What is the exact reset threshold voltage of the MAX6362PUT46-T?
The MAX6362PUT46-T has a factory-preset reset threshold of 4.63V (minimum specification), with typical value 4.50V and maximum 4.75V across temperature. This threshold is laser-trimmed during production and guaranteed over –40°C to +85°C, making it suitable for precise monitoring of +5.0V power rails in industrial and medical equipment where tight voltage margin control is required. The MAX6362PUT46-T datasheet specifies ±1.5% accuracy relative to nominal 4.63V.
Does the MAX6362PUT46-T require external components to operate as a watchdog timer?
No, the MAX6362PUT46-T includes a fully integrated watchdog timer with 1.6s timeout period - no external capacitors or resistors are needed. The WDI pin accepts standard CMOS/TTL logic edges; a rising or falling transition within each 1.6s window clears the timer. If WDI remains static beyond timeout, the MAX6362PUT46-T asserts an active-low reset pulse for 150ms. This self-contained design eliminates BOM cost and layout complexity versus discrete watchdog solutions.
How does the MAX6362PUT46-T handle power switchover between VCC and BATT?
The MAX6362PUT46-T performs automatic switchover using internal MOSFET control: when VCC falls below VBATT – 20mV, OUT disconnects from VCC and connects to BATT; when VCC rises above VBATT + 20mV, OUT reconnects to VCC. This 40mV hysteresis prevents oscillation during slow VCC ramps. The MAX6362PUT46-T guarantees switchover operation down to 1.2V on either rail and maintains OUT regulation during transition, preserving SRAM data integrity without external diodes or controllers.
Can the MAX6362PUT46-T be used without a backup battery?
Yes - the MAX6362PUT46-T functions as a standalone reset supervisor even without BATT connected. In this configuration, connect BATT to GND and VCC to OUT. The device still monitors VCC against 4.63V, asserts RESET on undervoltage, provides 150ms reset timeout, and supports WDI-based watchdog functionality. All core supervision features remain active; battery switchover is simply disabled. This makes the MAX6362PUT46-T suitable for cost-sensitive applications where backup power is not required.
What is the maximum load current supported by the OUT pin of the MAX6362PUT46-T?
The OUT pin of the MAX6362PUT46-T supports up to 150mA when sourced from VCC (at VCC ≥ 4.75V), 65mA at VCC = 3.15V, and 25mA at VCC = 2.38V. When powered from BATT, output current is limited by battery voltage and internal MOSFET on-resistance - e.g., 10mA at VBATT = 3.0V and 5mA at VBATT = 2.25V. These ratings ensure reliable SRAM backup in portable devices while maintaining low quiescent current (15µA max) to extend battery life. The MAX6362PUT46-T datasheet specifies these limits under defined thermal conditions.
MAX6362PUT46-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:
- 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-T FAQ
1.How can I place an order for MAX6362PUT46-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362PUT46-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 MAX6362PUT46-T reliable?
The price and inventory of MAX6362PUT46-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362PUT46-T is usually 5 days.
3.What payment methods are accepted for MAX6362PUT46-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362PUT46-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362PUT46-T?
MAX6362PUT46-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362PUT46-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 MAX6362PUT46-T?
For technical support, including MAX6362PUT46-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362PUT46-T requirements.
6.How does Aetrix verify that MAX6362PUT46-T is sourced from the original manufacturer or authorized distributors?
All MAX6362PUT46-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 MAX6362PUT46-T meets industry standards.
7.What is the process for return or replacement of MAX6362PUT46-T?
All MAX6362PUT46-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362PUT46-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 MAX6362PUT46-T part is unused and in its original packaging.
Return procedure for MAX6362PUT46-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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