My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6362HUT46-T
- Part No.:
- MAX6362HUT46-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362HUT46-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6362HUT46-T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, designed for battery-backed SRAM power management in embedded µP systems. It operates from +1.2V supply, features factory-preset 4.63V reset threshold (±15mV over temperature), 1.6s watchdog timeout, and active-low open-drain RESET output. Used in portable instrumentation where brownout resilience and autonomous reset initiation are critical.
For engineers reviewing the MAX6362HUT46-T datasheet, MAX6362HUT46-T pinout, MAX6362HUT46-T application, or MAX6362HUT46-T equivalent, key selection criteria include guaranteed reset assertion down to 1.2V VCC/VBATT, 150ms minimum reset timeout, battery switchover hysteresis of 40mV, and watchdog input (WDI) edge-triggered clearing with 100ns minimum pulse width.
Technical Context
The MAX6362HUT46-T implements a precision bandgap-based voltage monitor for VCC against a 4.63V threshold with ±15mV max deviation over –40°C to +85°C, and a separate independent watchdog timer with 1.6s nominal timeout (1.0–2.25s range). Its internal MOSFET enables automatic battery switchover when VCC falls below VBATT by >20mV, maintaining SRAM power without external control logic.
Reset assertion is synchronized to VCC falling edge with propagation delay <5µs at 10V/ms slew rate, and reset deassertion includes a fixed 150ms timeout after VCC rises above threshold. The WDI input clears the watchdog on any rising or falling edge - not level-hold - ensuring robust software liveliness detection even during stuck-loop conditions.
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 rail collapse before µP malfunction. |
| Watchdog Timeout | 1.6s (typical), 1.0–2.25s (min/max); provides sufficient margin for firmware execution cycles while preventing false triggers from transient stalls. |
| Reset Timeout Period | 150ms (minimum); guarantees µP remains held in reset long enough for stable power recovery and clock stabilization. |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT); supports direct operation from single-cell Li+ or coin-cell batteries without LDO. |
| Quiescent Current | 15µA (typical at VCC = 5.5V); enables multi-year battery life in always-on backup mode. |
| Battery Switchover Hysteresis | 40mV (VBATT − VCC); prevents oscillation during slow VCC decay near threshold crossing. |
| WDI Pulse Width Min | 100ns; allows use with fast µP I/O toggling without requiring dedicated timing hardware. |
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 | Pulled low during VCC undervoltage, WDI timeout, or power-up; requires external pull-up; asserts for ≥150ms after recovery. |
| 2: GND | Ground reference | Common return for all internal circuits; must be low-impedance connection to system ground plane. |
| 3: WDI | Watchdog input | Edge-sensitive (rising/falling); resets internal timer on each transition; 100ns min pulse width; internal 20kΩ pull-up to VCC. |
| 4: VCC | Main supply input | Primary power source; monitored for reset generation; powers internal circuitry and drives OUT when active. |
| 5: OUT | Power output | Switches between VCC and VBATT sources; delivers up to 150mA; connects to SRAM VDD to maintain data during main power loss. |
| 6: BATT | Backup battery input | Secondary power source; activates automatically when VCC < VBATT − 20mV; supplies OUT with <1µA standby current at VBATT = 2.8V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±15mV max tolerance over full temperature range - eliminates need for external resistor divider calibration. |
| Edge-triggered watchdog | Clears on any WDI transition (not level), enabling simple firmware toggle without precise timing constraints or dedicated timer peripherals. |
| Guaranteed 1.2V operation | RESET/RESET valid down to 1.2V VCC or VBATT - ensures fail-safe behavior even as primary or backup supply sags near end-of-life. |
| Integrated battery switchover MOSFET | Zero external components required for seamless SRAM backup switching; 40mV hysteresis prevents chatter during brownout recovery. |
| Power-supply transient immunity | Withstands negative-going VCC transients up to 30µs at 100mV overdrive without spurious reset - reduces need for oversized input capacitance. |
Applications
| Portable Medical Instrumentation | Industrial Data Logger |
|---|---|
Use Scenario: Handheld blood glucose meter with nonvolatile SRAM storing calibration history and patient logs across battery swaps. IC Role / Device Role / Timing Role: Supervisory circuit providing VCC monitoring, battery switchover to coin cell, and watchdog-triggered reset if firmware hangs during sensor initialization. Use Value: Prevents data corruption during main power interruption; 150ms reset timeout ensures ADC and display controllers fully initialize before code execution resumes. | Use Scenario: Remote environmental sensor node logging temperature/humidity every 10 seconds using ultra-low-power µP and SPI SRAM. IC Role / Device Role / Timing Role: Power manager asserting RESET during solar-charger brownouts, switching OUT to backup Li+ cell, and detecting firmware lockup via WDI toggling. Use Value: Enables >5-year field deployment on single charge; 1.6s watchdog timeout aligns with maximum allowable sensor read interval without false alarms. |
| POS Terminal with SRAM Cache | Smart Energy Meter |
Use Scenario: Retail point-of-sale terminal caching transaction buffers in battery-backed SRAM during AC mains failure. IC Role / Device Role / Timing Role: Monitors 5V DC rail derived from AC adapter; asserts RESET when input drops below 4.63V; switches OUT to backup supercapacitor bank. Use Value: Guarantees atomic write completion before power loss; 4.63V threshold matches standard 5V regulator dropout specification. | Use Scenario: ANSI C12.22-compliant electricity meter retaining time-of-use billing data during grid outages. IC Role / Device Role / Timing Role: Provides dual-voltage supervision (main 3.3V µP rail + 2.5V RTC rail via RESET IN on MAX6364 variant), battery switchover, and watchdog for metrology firmware. Use Value: Meets IEC 62053-21 tamper-resistance requirements via deterministic reset behavior and glitch-immune VCC monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT44-T | 4.38V reset threshold (vs. 4.63V); otherwise identical pinout, timing, and feature set. | Suitable for systems with tighter 4.5V rail tolerance or lower dropout regulators. | Select when main supply nominal is 4.5V rather than 5.0V; same PCB layout and firmware integration. |
| TPS3808G33DBVR | 3.3V fixed reset threshold; no integrated watchdog; push-pull RESET output; 1.8–6.0V supply range. | Lacks battery switchover and WDI functionality; requires external circuitry for SRAM backup control. | Choose only if watchdog and battery management are handled elsewhere; not drop-in compatible due to missing BATT/OUT pins and different pin mapping. |
Compared with MAX6362HUT44-T, the MAX6362HUT46-T offers higher reset threshold for improved noise margin on 5V rails; compared with TPS3808G33DBVR, it integrates battery switchover and watchdog in one SOT23-6 package, eliminating three external components and reducing board area by >30%.
Availability
MAX6362HUT46-T is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial data loggers, POS terminals, smart energy meters, and battery-powered IoT edge nodes requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6362HUT46-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, sensing, and connectivity in demanding industrial, medical, and communications applications.
The MAX6361–MAX6364 family targets space-constrained µP systems needing integrated power monitoring, battery backup, and watchdog functionality - specifically optimized for SRAM retention in portable and remote equipment.
FAQ
What is the exact reset threshold voltage of the MAX6362HUT46-T?
The MAX6362HUT46-T has a factory-preset reset threshold of 4.63V, with a guaranteed tolerance of ±15mV over the full –40°C to +85°C operating temperature range. This value is laser-trimmed during production and does not require external calibration. The MAX6362HUT46-T datasheet specifies 4.50V (min) and 4.75V (max) limits at TA = +25°C, tightening to 4.63V ±15mV across temperature.
Does the MAX6362HUT46-T support battery switchover without external MOSFETs?
Yes, the MAX6362HUT46-T integrates an internal MOSFET that automatically switches the OUT pin from VCC to VBATT when VCC falls below VBATT by more than 20mV. No external FETs, diodes, or control logic are required. The device maintains this state until VCC rises 20mV above VBATT, providing 40mV hysteresis to prevent oscillation during slow brownout recovery.
How does the watchdog timer in the MAX6362HUT46-T clear - by level or edge?
The watchdog timer in the MAX6362HUT46-T clears on any edge (rising or falling) at the WDI pin - not on sustained logic levels. This edge-triggered behavior allows flexible firmware implementation, such as toggling a GPIO once per main loop, without requiring precise pulse timing. The MAX6362HUT46-T ignores WDI state duration and responds only to transitions, with a minimum detectable pulse width of 100ns.
Can the MAX6362HUT46-T operate with a 1.8V main supply?
No - the MAX6362HUT46-T requires VCC ≥ 2.4V to guarantee proper reset assertion and internal circuit operation, though its absolute minimum supply is +1.2V. At 1.8V, the 4.63V reset threshold cannot be meaningfully monitored, and parameters like supply current and propagation delay are not characterized. For 1.8V systems, consider the MAX6361–MAX6364 variants with lower thresholds (e.g., MAX6362HUT23-T, 2.32V).
What is the maximum load current the OUT pin can deliver in battery-backup mode?
In battery-backup mode, the OUT pin of the MAX6362HUT46-T delivers current sourced from VBATT through the internal MOSFET. The datasheet specifies maximum load currents of 5mA at VBATT = 2.25V, 10mA at 3.0V, and 20mA at 4.5V - all with guaranteed voltage regulation. Exceeding these limits risks excessive voltage drop or thermal shutdown. The MAX6362HUT46-T is intended for SRAM backup (typically <1mA), not general-purpose power delivery.
MAX6362HUT46-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 High
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6362HUT46-T FAQ
1.How can I place an order for MAX6362HUT46-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362HUT46-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 MAX6362HUT46-T reliable?
The price and inventory of MAX6362HUT46-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362HUT46-T is usually 5 days.
3.What payment methods are accepted for MAX6362HUT46-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362HUT46-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362HUT46-T?
MAX6362HUT46-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362HUT46-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 MAX6362HUT46-T?
For technical support, including MAX6362HUT46-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362HUT46-T requirements.
6.How does Aetrix verify that MAX6362HUT46-T is sourced from the original manufacturer or authorized distributors?
All MAX6362HUT46-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 MAX6362HUT46-T meets industry standards.
7.What is the process for return or replacement of MAX6362HUT46-T?
All MAX6362HUT46-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362HUT46-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 MAX6362HUT46-T part is unused and in its original packaging.
Return procedure for MAX6362HUT46-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6362HUT46-T 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…
