My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6362PUT31+
- Part No.:
- MAX6362PUT31+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362PUT31+.pdf
- Description:
- MAX6362 LOW-POWER MICROPROCESSO
- Quantity:
- Payment:
- Shipping:
Inventory:666
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6362PUT31+ from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, battery switchover, and 3.08V factory-preset reset threshold. It operates from +1.2V supply, delivers 150ms minimum reset timeout, and provides 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 and power-failure events.
For engineers reviewing the MAX6362PUT31+ datasheet, MAX6362PUT31+ pinout, MAX6362PUT31+ application, or MAX6362PUT31+ equivalent, key selection criteria include guaranteed reset assertion down to 1.2V, 1.6s watchdog timeout period, battery switchover hysteresis (40mV), VCC-to-OUT on-resistance (≤2.7Ω at 2.38V), and SOT23-6 thermal performance across –40°C to +85°C.
Technical Context
The MAX6362PUT31+ implements a dedicated watchdog timer with 1.6s timeout (typical), cleared by rising or falling edges on WDI - not level-hold detection. Its internal comparator monitors VCC against a precision 3.08V threshold (±1.5% over temperature) and asserts RESET when VCC falls below that value or when WDI remains static beyond timeout.
Battery switchover uses dual-voltage comparison: OUT connects to BATT only when VCC < VTH *and* VCC < (VBATT − 20mV); reversion occurs when VCC rises > (VBATT + 20mV). The device guarantees RESET/RESET validity down to 1.2V on either VCC or VBATT, enabling operation during deep brownout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±1.5% (factory preset; ensures reliable reset at 3.3V system brownout) |
| Watchdog Timeout | 1.6s typical (enables robust software hang detection without false triggers) |
| Reset Timeout Period | 150ms minimum (guarantees µP initialization stability after power recovery) |
| Supply Voltage Range | +1.2V to +5.5V (supports single-cell Li+ and multi-rail embedded systems) |
| Quiescent Current | 11µA at VCC = 2.8V (enables multi-year battery life in backup mode) |
| VCC-to-OUT RON | 2.7Ω max at VCC = 2.38V, IOUT = 25mA (minimizes voltage drop to SRAM during main supply operation) |
| Battery Switchover Hysteresis | 40mV (prevents oscillation during slow VCC ramp-down or noisy transitions) |
Pinout & Package
Package: 6-pin SOT23 (U6-1), 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, WDI timeout, or power-up; requires external pull-up for µP reset input |
| 2: GND | Ground reference | Common return path for VCC, BATT, and all internal comparators and logic |
| 3: WDI | Watchdog timer input | Edge-sensitive input; rising or falling edge resets 1.6s timer; static high/low for >1.6s triggers reset pulse |
| 4: VCC | Main supply input | Primary power source; monitored for reset threshold violation; powers internal circuitry above 1.2V |
| 5: OUT | Power output for SRAM or backup load | Switches between VCC and BATT based on dual-voltage comparison; supports up to 150mA from VCC |
| 6: BATT | Backup battery input | Provides backup power to OUT when VCC fails; enables zero-data-loss SRAM retention |
Key Features
| Feature | Design Value |
|---|---|
| Watchdog timer with edge-triggered clear | Eliminates software "stuck loop" risk by requiring signal transitions-not just level toggling-on WDI |
| Guaranteed 1.2V operation on VCC or VBATT | Ensures functional reset assertion even during severe brownout where VCC drops below 2.0V |
| 40mV battery switchover hysteresis | Prevents repeated ON/OFF cycling of backup path during slow VCC decay or noise-induced dips |
| 150ms minimum reset timeout | Meets µP power-on reset timing requirements for stable clock and memory initialization |
| Low 11µA quiescent current at 2.8V | Extends shelf life and operational runtime in battery-backed applications such as POS terminals and handheld meters |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered glucose meter retains SRAM configuration and calibration data during AC power loss or battery swap. IC Role / Device Role / Timing Role: MAX6362PUT31+ monitors main supply, switches SRAM to backup battery within 10µs, and asserts reset if firmware hangs. Use Value: Prevents data corruption and ensures deterministic restart after power interruption without external debounce or discrete MOSFETs. | Use Scenario: Remote environmental sensor node logs temperature/humidity continuously using SRAM cache, powered by primary DC supply with Li+ backup. IC Role / Device Role / Timing Role: MAX6362PUT31+ detects VCC sag below 3.08V, initiates battery switchover, and pulses RESET if MCU fails to service WDI within 1.6s. Use Value: Enables unattended multi-year operation with automatic failover and watchdog-enforced firmware health monitoring. |
| Point-of-Sale Terminals | Smart Utility Meters |
Use Scenario: Retail terminal maintains transaction buffer in SRAM during brief AC outage or battery depletion event. IC Role / Device Role / Timing Role: MAX6362PUT31+ sources OUT from BATT when VCC drops, holds RESET active for ≥150ms post-recovery, and validates WDI activity. Use Value: Guarantees atomic transaction commit before power loss and eliminates need for supercapacitor-based hold-up circuits. | Use Scenario: Electricity meter preserves tamper logs and billing cycle counters during grid instability or battery aging. IC Role / Device Role / Timing Role: MAX6362PUT31+ provides precise 3.08V reset threshold tracking, low-leakage battery switchover (<1µA standby), and watchdog supervision of metrology firmware. Use Value: Meets ANSI C12.1 and IEC 62053 accuracy requirements for data integrity under extended brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT31+ | Same electrical specs and pinout; differs only in tape-and-reel packaging (HUT vs PUT) and top-mark code (AAGT vs AAGS) | Identical functionality; selected for automated SMT assembly with different reel size or carrier tape specification | Preferred for high-volume production requiring standard 3k/reel packaging |
| TPS3808G33DBVR | 3.3V reset threshold (±0.5%), 200ms reset timeout, no integrated watchdog or battery switchover | Lacks WDI and BATT/OUT switching; requires external MOSFET and separate watchdog IC for equivalent functionality | Only suitable where battery backup is unnecessary and tighter reset threshold tolerance is prioritized |
Compared with MAX6362HUT31+, the MAX6362PUT31+ offers identical supervisory performance in a different tape-and-reel format; compared with TPS3808G33DBVR, it integrates watchdog and battery switchover - eliminating two external components and reducing PCB area by >25mm².
Availability
MAX6362PUT31+ is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, point-of-sale terminals, smart utility meters, and battery-backed SRAM applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX6362PUT31+ 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, computing, and communications markets.
The MAX6361–MAX6364 family was developed to consolidate µP reset, battery switchover, and watchdog functions into a single 6-pin SOT23 device for space-constrained, battery-sensitive applications.
FAQ
What is the exact reset threshold voltage of the MAX6362PUT31+?
The MAX6362PUT31+ has a factory-preset reset threshold of 3.08V, with ±1.5% tolerance over the full –40°C to +85°C temperature range. This value is laser-trimmed during production and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" for suffix "31". It is optimized for reliable detection of brownout in 3.3V systems.
Does the MAX6362PUT31+ require an external pull-up resistor on the RESET pin?
Yes, the MAX6362PUT31+ features an active-low open-drain RESET output, which requires an external pull-up resistor to VCC or another valid logic rail. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements. The internal output transistor sinks up to 20mA but does not drive high.
How does the watchdog timer in the MAX6362PUT31+ respond to software stalls?
The MAX6362PUT31+ watchdog timer triggers a reset pulse if the WDI input remains static (high or low) for longer than 1.6s (typical). A rising or falling edge on WDI resets the timer - making it immune to stuck loops where WDI is held constant. This behavior is confirmed in the "Watchdog Input (MAX6362 Only)" section of the datasheet.
Can the MAX6362PUT31+ operate with a 1.8V main supply?
No - the MAX6362PUT31+ requires VCC ≥ 2.38V to guarantee proper reset assertion and battery switchover functionality. While the device *powers up* from 1.2V, its 3.08V reset threshold means it will assert RESET continuously below that level. For 1.8V systems, use MAX6362PUT23+ (2.32V threshold) instead.
What is the maximum continuous current the OUT pin can deliver from the backup battery?
The OUT pin delivers up to 10mA continuously from the backup battery (VBATT) in battery-backup mode, as limited by the internal MOSFET's on-resistance and thermal constraints. At VBATT = 2.8V and TA = +25°C, battery standby current is ≤0.05µA - confirming ultra-low leakage. Higher currents (e.g., 25mA) are supported only transiently and with derating at elevated temperatures.
MAX6362PUT31+ 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:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- 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
MAX6362PUT31+ FAQ
1.How can I place an order for MAX6362PUT31+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362PUT31+ 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 MAX6362PUT31+ reliable?
The price and inventory of MAX6362PUT31+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362PUT31+ is usually 5 days.
3.What payment methods are accepted for MAX6362PUT31+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362PUT31+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362PUT31+?
MAX6362PUT31+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362PUT31+ 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 MAX6362PUT31+?
For technical support, including MAX6362PUT31+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362PUT31+ requirements.
6.How does Aetrix verify that MAX6362PUT31+ is sourced from the original manufacturer or authorized distributors?
All MAX6362PUT31+ 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 MAX6362PUT31+ meets industry standards.
7.What is the process for return or replacement of MAX6362PUT31+?
All MAX6362PUT31+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362PUT31+, 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 MAX6362PUT31+ part is unused and in its original packaging.
Return procedure for MAX6362PUT31+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6362PUT31+ Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
