My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6362HUT31-T
- Part No.:
- MAX6362HUT31-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362HUT31-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
MAX6362HUT31-T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, designed for battery-backed µP systems requiring reliable power monitoring and fail-safe reset control. It operates from +1.2V supply, features factory-preset 3.08V reset threshold, 1.6s watchdog timeout, 150ms minimum reset timeout, and active-low open-drain RESET output - enabling robust brownout protection and SRAM backup in portable instrumentation and industrial controllers.
For engineers reviewing the MAX6362HUT31-T datasheet, MAX6362HUT31-T pinout, MAX6362HUT31-T application, or MAX6362HUT31-T equivalent, key selection criteria include its SOT23-6 package, guaranteed RESET/RESET validity down to 1.2V, VCC-to-OUT on-resistance ≤2.7Ω at 2.38V, battery switchover hysteresis (40mV), and watchdog input (WDI) edge-triggered clearing logic.
Technical Context
The MAX6362HUT31-T implements a dedicated watchdog timer with fixed 1.6s timeout period (1.00–2.25s over temperature), cleared by rising or falling edges on WDI - not level duration alone. Its internal comparator monitors VCC against a precision 3.08V threshold (±1.5% over -40°C to +85°C), asserting RESET when VCC falls below threshold and holding it for ≥150ms after VCC recovers.
Battery switchover is controlled by dual conditions: VCC must be both below the reset threshold *and* at least 20mV below VBATT to engage the internal MOSFET connecting BATT to OUT. The device guarantees functional operation with VCC or VBATT as low as +1.2V, and RESET/RESET remains valid across that full range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V (factory-preset, ±1.5% over temp) - ensures reliable detection of 3.3V supply brownout before µP malfunction. |
| Watchdog Timeout | 1.6s typical (1.00–2.25s min/max) - provides sufficient margin for firmware execution cycles while detecting hangs. |
| Reset Timeout Period | 150ms minimum - guarantees µP initialization completes before release from reset state. |
| Supply Current (VCC) | 11µA at 2.8V, 15µA at 5.5V - enables multi-year battery life in always-on backup mode. |
| VCC-to-OUT On-Resistance | 2.7Ω max at VCC = 2.38V, IOUT = 25mA - minimizes voltage drop during SRAM backup sourcing. |
| Battery Standby Current | 0.05µA max at -40°C to +85°C - preserves backup battery charge during extended power loss. |
| Operating Voltage Range | +1.2V to +5.5V on VCC or VBATT - supports single-cell Li+ (2.7–4.2V) and 3.3V/5V logic rails. |
Pinout & Package
MAX6362HUT31-T is housed in a 6-pin SOT23-6 package (U6-1 outline, 21-0058 footprint), measuring 2.9mm × 1.6mm × 1.1mm, RoHS-compliant with lead-free termination ("-T" suffix).
| 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 for µP reset assertion. |
| 2: GND | Ground reference | Common return path for VCC, VBATT, and all internal circuitry; must be low-impedance for noise immunity. |
| 3: WDI | Watchdog input | Edge-sensitive (rising/falling) trigger; resets internal timer on each transition; no level-hold requirement. |
| 4: VCC | Main supply input | Primary power source; monitored for reset threshold violation; powers internal circuitry above 1.2V. |
| 5: OUT | Power output | Sources from VCC when active; switches to BATT during brownout; delivers up to 150mA at VCC ≥2.38V. |
| 6: BATT | Backup battery input | Provides hold-up power when VCC drops; engages only if VCC < VTH and VCC < (VBATT − 20mV). |
Key Features
| Feature | Design Value |
|---|---|
| Watchdog timer with edge-triggered clear | Eliminates need for precise software pulse timing; prevents false clears during stuck loops via dual-edge detection. |
| Guaranteed 1.2V operation on VCC/VBATT | Enables use with depleted lithium batteries or ultra-low-voltage systems without external regulators. |
| 150ms min reset timeout with VCC recovery | Ensures µP clock stabilization and internal register initialization before release from reset. |
| 40mV hysteresis on battery switchover | Prevents oscillation during slow VCC decay by requiring 20mV differential for both engage and disengage. |
| Power-supply transient immunity | Withstands 100mV VCC glitches up to 30µs duration without spurious reset assertion. |
Applications
| Portable Data Loggers | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Continuous sensor data acquisition in remote field deployments powered by coin-cell or Li+ battery, with periodic wake-up and transmission. IC Role / Device Role / Timing Role: Supervisory controller providing brownout reset, SRAM backup via OUT, and watchdog supervision of sleep/wake firmware. Use Value: 11µA supply current extends battery life >5 years; 3.08V threshold precisely guards 3.3V MCU rail; 1.6s watchdog detects missed wake-up events. |
Use Scenario: Distributed I/O modules in factory automation systems subject to 24V DC bus transients and intermittent power loss. IC Role / Device Role / Timing Role: Power integrity monitor ensuring deterministic µP restart after voltage sags, with battery-backed configuration memory retention. Use Value: 150ms reset timeout prevents premature µP execution; 40mV switchover hysteresis avoids chatter during noisy 24V-to-3.3V conversion; 1.2V operation sustains function during deep brownouts. |
| Medical Point-of-Care Devices | Smart Energy Meters |
|
Use Scenario: Handheld diagnostic tools with flash memory storage requiring guaranteed data integrity during battery replacement or low-power states. IC Role / Device Role / Timing Role: Dual-role supervisor: resets MCU on power anomaly and maintains SRAM power via BATT-to-OUT switchover. Use Value: 0.05µA battery standby current preserves backup charge for >10 years; 2.7Ω VCC-to-OUT RON limits voltage droop during critical write operations. |
Use Scenario: Revenue-grade electricity meters operating continuously on AC-derived 3.3V rail with supercapacitor backup for outage logging. IC Role / Device Role / Timing Role: Fault-tolerant power manager asserting reset on AC dropout and enabling seamless transition to backup power for time-stamped event capture. Use Value: Guaranteed RESET validity down to 1.2V ensures reset assertion even as supercapacitor decays to 1.8V; edge-triggered WDI simplifies firmware integration without timing-critical pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT29-T | Factory-preset 2.93V reset threshold (vs. 3.08V); otherwise identical pinout, timing, and functionality. | Targeted at 2.8V/3.0V logic rails instead of 3.3V systems; same SOT23-6 package and temperature range. | Select when monitoring lower-voltage supplies where 3.08V threshold would cause premature reset. |
| TPS3808G33DBVR | TI part with 3.3V threshold, 200ms reset timeout, and push-pull RESET output; no integrated watchdog or battery switchover. | Lacks WDI and BATT/OUT functionality; requires external components for backup power management and watchdog capability. | Choose only if battery backup and watchdog are handled separately; not a functional substitute for MAX6362HUT31-T's integrated features. |
Compared with MAX6362HUT29-T, the MAX6362HUT31-T offers higher reset threshold for tighter 3.3V rail margin; compared with TPS3808G33DBVR, it integrates battery switchover and edge-triggered watchdog - eliminating two ICs and associated layout complexity in space-constrained designs.
Availability
MAX6362HUT31-T is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC modules, medical diagnostics equipment, smart energy meters, and battery-backed data loggers requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for MAX6362HUT31-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.
The MAX6361–MAX6364 family was designed specifically for µP systems needing integrated power monitoring, battery backup, and watchdog supervision in minimal PCB area - targeting portable, battery-powered, and mission-critical embedded devices.
FAQ
What is the exact reset threshold voltage of the MAX6362HUT31-T?
The MAX6362HUT31-T has a factory-trimmed reset threshold of 3.08V (typical), with guaranteed range of 3.00V to 3.15V over -40°C to +85°C. This value is laser-trimmed during production and specified in the Ordering Information table under suffix "31". The threshold remains stable across temperature and supply voltage variations per the Electrical Characteristics table.
Does the MAX6362HUT31-T require an external pull-up resistor on the RESET pin?
Yes, the MAX6362HUT31-T features an active-low open-drain RESET output (pin 1), which requires an external pull-up resistor to VCC or another logic rail to generate a valid high-level signal for the µP's reset input. Typical values range from 10kΩ to 100kΩ depending on rise-time requirements and bus loading; no internal pull-up is provided on this pin.
How does the watchdog timer in the MAX6362HUT31-T clear - by level or edge?
The watchdog timer in the MAX6362HUT31-T clears on *either* a rising or falling edge applied to the WDI pin (pin 3); it does not require sustained high/low levels. This edge-triggered behavior allows flexible firmware integration - for example, toggling WDI once per main loop - and prevents false clears during software hangs where the WDI line might be stuck high or low.
Can the MAX6362HUT31-T operate with VBATT only, without VCC applied?
No. The MAX6362HUT31-T will not power up or function if only VBATT is present; VCC must be applied first to initialize internal circuitry. As stated in the Detailed Description: "OUT will only power up from VCC at startup." Once operational, if VCC drops below threshold and VBATT exceeds VCC by >20mV, the device switches OUT to battery power - but initial start-up requires VCC.
What is the maximum continuous output current capability of the OUT pin on the MAX6362HUT31-T?
The OUT pin of the MAX6362HUT31-T delivers up to 150mA when sourced from VCC at VCC ≥ 4.75V, 65mA at VCC ≥ 3.15V, and 25mA at VCC ≥ 2.38V. These limits are defined in the Electrical Characteristics table under "VCC to OUT On-Resistance" test conditions and reflect safe continuous operation without thermal derating in the SOT23-6 package.
MAX6362HUT31-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:
- 3.08V
- 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
MAX6362HUT31-T FAQ
1.How can I place an order for MAX6362HUT31-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362HUT31-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 MAX6362HUT31-T reliable?
The price and inventory of MAX6362HUT31-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362HUT31-T is usually 5 days.
3.What payment methods are accepted for MAX6362HUT31-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362HUT31-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362HUT31-T?
MAX6362HUT31-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362HUT31-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 MAX6362HUT31-T?
For technical support, including MAX6362HUT31-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362HUT31-T requirements.
6.How does Aetrix verify that MAX6362HUT31-T is sourced from the original manufacturer or authorized distributors?
All MAX6362HUT31-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 MAX6362HUT31-T meets industry standards.
7.What is the process for return or replacement of MAX6362HUT31-T?
All MAX6362HUT31-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362HUT31-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 MAX6362HUT31-T part is unused and in its original packaging.
Return procedure for MAX6362HUT31-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6362HUT31-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…
