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Analog Devices Inc./Maxim Integrated MAX6363HUT31-T
- Part No.:
- MAX6363HUT31-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363HUT31-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,633
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Product details
Overview
MAX6363HUT31-T from Maxim Integrated is a low-power microprocessor supervisory circuit with battery switchover and BATT ON status indication, designed for SRAM backup in brownout conditions. It operates from +1.2V supply, features factory-preset 3.08V reset threshold (±1.5% over temperature), 150ms minimum reset timeout, and active-low open-drain RESET output. Used in portable/battery-powered equipment requiring reliable power-fail detection and seamless battery backup.
For engineers reviewing the MAX6363HUT31-T datasheet, MAX6363HUT31-T pinout, MAX6363HUT31-T application, or MAX6363HUT31-T equivalent, key selection criteria include its 3.08V reset threshold accuracy, battery-on indicator function, SOT23-6 package compatibility, and guaranteed reset assertion down to 1.2V VCC/VBATT operation.
Technical Context
The MAX6363HUT31-T implements precision voltage monitoring using an internal bandgap reference and comparator to detect VCC falling below 3.08V. Its battery switchover logic enforces dual conditions: VCC must be both below the reset threshold and at least 20mV lower than VBATT before engaging backup mode.
BATT ON output asserts high only during validated battery-backup operation-when VCC is disconnected from OUT and OUT is sourced from BATT. The device guarantees RESET/RESET validity down to 1.2V and provides 150ms minimum reset timeout after VCC recovery, ensuring µP initialization stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±1.5% (TA = -40°C to +85°C); ensures reliable detection of 3.3V rail brownout |
| Reset Timeout Period | 150ms minimum; guarantees µP reset hold time after VCC recovery |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT); supports ultra-low-voltage operation and Li+ battery backup |
| Supply Current | 15µA typical at VCC = 5.5V; enables multi-year battery life in standby |
| Battery Standby Current | 0.05µA max at TA = -40°C to +85°C; minimizes battery drain during long-term backup |
| VCC-to-OUT On-Resistance | 2.75Ω max at VCC = 2.38V, IOUT ≤25mA; limits voltage drop under SRAM load |
| Reset Output Type | Active-low open-drain; allows wired-OR configuration and level-shifting flexibility |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 21-0058). RoHS-compliant lead-free version marked with "+T"; "-T" suffix denotes standard leaded packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, power-up, or brownout; requires external pull-up |
| 2: GND | Ground reference | Common return path for VCC, VBATT, and all internal circuitry |
| 3: MR | Manual reset input | Logic-low assertion forces reset; internal 20kΩ pull-up to VCC; debounced internally |
| 4: VCC | Main supply input | Primary power source; monitored for reset threshold violation; powers internal circuitry |
| 5: OUT | Power output | Switches between VCC and BATT based on voltage comparison; supplies SRAM or real-time clock |
| 6: BATT | Backup battery input | Secondary power source; engages only when VCC < VTH and VCC < VBATT − 20mV |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On (BATT ON) output | Dedicated high-assertion signal confirming valid battery-backup mode-enables system-level power-state awareness |
| Factory-preset 3.08V threshold | Eliminates external resistor network; achieves ±1.5% accuracy over full industrial temperature range |
| 150ms minimum reset timeout | Ensures µP completes internal initialization before release; prevents premature code execution |
| 1.2V operating capability | Supports deep-brownout operation and extends usable battery voltage range down to single-cell Li+ |
| Power-supply transient immunity | Withstands 30µs transients 100mV below VTH without false triggering-reduces need for excessive bypass capacitance |
Applications
| Portable Medical Monitors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG waveform capture during AC power loss in handheld patient monitors. IC Role / Device Role / Timing Role: Supervisory circuit providing battery-backed SRAM retention and BATT ON status flag for firmware state preservation. Use Value: Prevents data loss during 10–30s AC outage by switching SRAM supply to coin cell and signaling backup activation via BATT ON. | Use Scenario: Uninterrupted sensor data storage in remote environmental monitoring nodes powered by solar-charged Li-ion. IC Role / Device Role / Timing Role: Voltage supervisor detecting solar charger dropout and enabling seamless transition to battery-backed memory. Use Value: Guarantees 150ms reset hold time and <0.05µA battery drain, extending field deployment intervals beyond 5 years. |
| POS Terminal Battery Backup | Ruggedized Handheld Scanners |
Use Scenario: Maintaining transaction buffer integrity during sudden mains failure in retail point-of-sale terminals. IC Role / Device Role / Timing Role: Power-monitoring IC asserting reset and switching SRAM to backup while signaling BATT ON to host controller. Use Value: 3.08V threshold precisely matches 3.3V LDO output sag; eliminates false resets during load transients. | Use Scenario: Preserving barcode scan history and calibration data during hot-swap battery replacement in warehouse scanners. IC Role / Device Role / Timing Role: Supervisor managing dual-power domain (main rail + removable battery) with automatic switchover and status reporting. Use Value: BATT ON output enables firmware to disable non-essential peripherals during backup mode, reducing current draw by 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT29-T | 2.93V reset threshold (vs. 3.08V); otherwise identical pinout, timing, and functionality | Suitable for systems with tighter 3.0V rail tolerance where earlier reset assertion is required | Select when VCC nominal is 3.0V and margin to 2.93V provides better noise immunity than 3.08V |
| TPS3808G30DBVR | 3.0V threshold, 200ms reset timeout, 2.5µA quiescent current; SOT23-6 but different pin mapping (no BATT ON) | Lacks battery switchover and BATT ON output; requires external MOSFET for backup control | Choose only if BATT ON signal is unnecessary and longer reset timeout improves system robustness |
Compared with MAX6363HUT29-T, the MAX6363HUT31-T offers higher reset threshold for improved noise margin on 3.3V rails; compared with TPS3808G30DBVR, it integrates battery switchover and status reporting-eliminating two external components and PCB area.
Availability
MAX6363HUT31-T is available at Aetrix Electronics and suitable for portable medical monitors, industrial data loggers, POS terminals, and ruggedized handheld scanners requiring stable component supply across extended production lifecycles.
Supply support for MAX6363HUT31-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 management, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX6361–MAX6364 family was engineered specifically for µP-based systems needing integrated power supervision, battery backup control, and status signaling in space-constrained portable equipment.
FAQ
What is the exact reset threshold voltage of the MAX6363HUT31-T?
The MAX6363HUT31-T has a factory-trimmed reset threshold of 3.08V, with guaranteed accuracy of ±1.5% over the full industrial temperature range (-40°C to +85°C). This value is confirmed in the Electrical Characteristics table of the official datasheet and applies specifically to the "31" suffix variant. The MAX6363HUT31-T uses this precise threshold to reliably monitor 3.3V power rails during brownout conditions.
Does the MAX6363HUT31-T provide a dedicated battery-status output?
Yes, the MAX6363HUT31-T includes a dedicated BATT ON output (Pin 3 in SOT23-6 top view) that goes high only when the device is actively sourcing OUT from the backup battery-i.e., when VCC is below the reset threshold and VCC is at least 20mV lower than VBATT. This signal is not present in other variants like MAX6361 or MAX6362. The MAX6363HUT31-T's BATT ON output enables firmware to enter low-power backup mode with confidence.
Can the MAX6363HUT31-T operate with a 1.2V supply?
Yes, the MAX6363HUT31-T guarantees full functionality-including RESET/RESET assertion and BATT ON output-down to 1.2V on either VCC or VBATT. This is explicitly specified in the Electrical Characteristics table under "RESET/RESET Valid Down to 1.2V Guaranteed." The MAX6363HUT31-T maintains accurate threshold detection and 150ms reset timeout even at this ultra-low voltage, supporting single-cell Li+ and NiMH battery applications.
What is the maximum load current the MAX6363HUT31-T can deliver through its OUT pin?
The MAX6363HUT31-T supports up to 150mA from VCC and up to 10mA from VBATT on the OUT pin, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. At VCC = 2.38V, the VCC-to-OUT on-resistance is 2.75Ω max, limiting voltage drop under load. The MAX6363HUT31-T is intended for powering SRAM, RTCs, or small logic blocks-not high-current peripherals.
Is the MAX6363HUT31-T pin-compatible with other devices in the MAX6361–MAX6364 family?
Yes, all MAX6361–MAX6364 variants-including the MAX6363HUT31-T-share identical 6-pin SOT23 pinout and footprint per the Pin Configurations diagram. However, functional differences exist: only MAX6363 provides BATT ON, only MAX6361 has MR, only MAX6362 has WDI, and only MAX6364 has RESET IN. The MAX6363HUT31-T retains full mechanical compatibility while delivering its specific battery-monitoring feature set.
MAX6363HUT31-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-6
MAX6363HUT31-T FAQ
1.How can I place an order for MAX6363HUT31-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363HUT31-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 MAX6363HUT31-T reliable?
The price and inventory of MAX6363HUT31-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363HUT31-T is usually 5 days.
3.What payment methods are accepted for MAX6363HUT31-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363HUT31-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363HUT31-T?
MAX6363HUT31-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363HUT31-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 MAX6363HUT31-T?
For technical support, including MAX6363HUT31-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363HUT31-T requirements.
6.How does Aetrix verify that MAX6363HUT31-T is sourced from the original manufacturer or authorized distributors?
All MAX6363HUT31-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 MAX6363HUT31-T meets industry standards.
7.What is the process for return or replacement of MAX6363HUT31-T?
All MAX6363HUT31-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363HUT31-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 MAX6363HUT31-T part is unused and in its original packaging.
Return procedure for MAX6363HUT31-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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