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Analog Devices Inc./Maxim Integrated MAX6363HUT31
- Part No.:
- MAX6363HUT31
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363HUT31.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,382
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Product details
Overview
MAX6363HUT31 from Maxim Integrated is a low-power microprocessor supervisory circuit with battery switchover capability, factory-preset 3.00V reset threshold (±50mV), active-high push-pull RESET output, and dedicated BATT ON indicator output. It operates from +1.2V supply (VCC or VBATT), provides 150ms minimum reset timeout, and supports SRAM backup power switching in brownout conditions for industrial controllers and portable equipment.
For engineers reviewing the MAX6363HUT31 datasheet, MAX6363HUT31 pinout, MAX6363HUT31 application, or MAX6363HUT31 equivalent, this device delivers precision voltage monitoring, battery-on status signaling, and guaranteed reset assertion down to 1.2V - critical for reliable power-fail detection and memory retention in embedded systems with backup batteries.
Technical Context
The MAX6363HUT31 integrates a precision voltage comparator with 3.00V threshold (2.93V min / 3.08V max), internal hysteresis for noise immunity, and a MOSFET-based battery switchover path that connects VBATT to OUT when VCC falls below VBATT − 0.15V. Its BATT ON output asserts high during battery-backup mode, enabling system-level power-state awareness.
It features a 150ms reset timeout period independent of temperature (135–150ms over −40°C to +85°C), guaranteed reset propagation delay under 5µs (VCC falling at 10V/ms), and operates with supply current as low as 10µA at VCC = 2.8V. The device maintains functional reset assertion even when VCC drops to 1.2V, ensuring robust behavior during deep brownouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V (2.93V min / 3.08V max) - precisely monitors +3.0V supply rails without external resistors |
| Reset Timeout Period | 150ms (min) - ensures µP completes full reset sequence before release |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT) - supports ultra-low-voltage operation and Li+ battery backup |
| Supply Current (VCC = 2.8V) | 10µA typical - enables multi-year battery life in always-on backup applications |
| Battery Standby Current | 0.02µA (max at −40°C to +85°C) - minimizes battery drain during extended backup mode |
| Output Type | Active-high push-pull RESET - drives µP reset input directly without pull-up resistor |
| BATT ON Output | Dedicated logic-high indicator during battery-backup mode - enables firmware power-state management |
Pinout & Package
MAX6363HUT31 is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts in portable and industrial control designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Common return path for all internal circuits and output drivers |
| VCC | Main supply input | Primary power source; reset asserted when voltage falls below 3.00V threshold |
| BATT ON | Battery-active status output | Logic-high signal indicates VBATT is powering OUT (i.e., VCC < VBATT − 0.15V) |
| BATT | Backup battery input | Connects to Li+ or coin-cell battery; switches to OUT when VCC fails |
| OUT | Power output | Supplies SRAM or real-time clock from VCC (normal) or VBATT (backup); supports up to 150mA |
| RESET | Active-high reset output | Push-pull driver asserts high during reset; compatible with µP reset inputs requiring active-high assertion |
Key Features
| Feature | Design Value |
|---|---|
| Battery switchover hysteresis | 40mV (VBATT − 0.15V to switch in, VBATT + 0.2V to switch out) - prevents oscillation during slow VCC decay |
| Reset assertion at low VCC | Guaranteed operation down to 1.2V VCC - ensures reset remains valid through deep brownout |
| Transient immunity | Rejects 30µs transients 100mV below threshold - eliminates false resets from power glitches |
| Zero external components | Factory-trimmed threshold and timeout - eliminates calibration resistors and timing capacitors |
| Low battery leakage | <0.02µA standby current at +85°C - extends 3V coin-cell life beyond 10 years in backup mode |
Applications
| Industrial Controllers | POS Terminals |
|---|---|
Use Scenario: PLCs and RTUs retain SRAM contents during AC mains failure using onboard Li+ battery. IC Role / Device Role / Timing Role: Supervisory IC monitors 3.3V rail, asserts RESET to halt CPU, and switches SRAM supply to battery via OUT while signaling BATT ON. Use Value: Prevents data corruption and enables seamless recovery after power restoration without manual reboot. |
Use Scenario: Retail point-of-sale terminals maintain transaction log integrity during brief power interruptions. IC Role / Device Role / Timing Role: MAX6363HUT31 detects 3.0V rail collapse, holds µP in reset for ≥150ms, and powers SRAM from backup cell while asserting BATT ON for firmware logging. Use Value: Guarantees atomic write completion and eliminates lost sales records due to ungraceful shutdown. |
| Portable Medical Devices | Smart Meters |
Use Scenario: Handheld glucose meters preserve calibration data and usage history during battery replacement. IC Role / Device Role / Timing Role: Monitors main 3.0V supply; triggers controlled shutdown and activates BATT ON to flag low-power state before switching SRAM to backup. Use Value: Ensures regulatory-compliant data persistence without volatile RAM loss during hot-swap battery events. |
Use Scenario: Electricity meters retain time-of-use billing data and tamper logs during grid outages. IC Role / Device Role / Timing Role: Supervises 3.0V RTC/EEPROM supply; asserts RESET to freeze metering state and routes backup power to nonvolatile memory via OUT. Use Value: Meets IEC 62053-21 requirements for 10-year data retention with single coin-cell backup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT30 | 3.00V threshold with ±30mV tolerance (vs. ±50mV for MAX6363HUT31) | Tighter threshold accuracy required for 3.0V ±3% supply rails | Select when tighter VTH tolerance is needed; otherwise MAX6363HUT31 offers broader margin for cost-sensitive designs |
| TPS3808G30DBVR | 3.0V threshold, open-drain RESET, no BATT ON output, 350ms timeout | Lacks battery-status signaling and SRAM switchover; requires external diode/FET for backup path | Choose only if BATT ON functionality is unnecessary and longer reset hold time is acceptable |
Compared with MAX6363HUT31, MAX6363HUT30 provides tighter reset threshold accuracy but identical pinout and function; TPS3808G30DBVR lacks integrated battery switchover and status indication, requiring additional components to replicate MAX6363HUT31's complete backup-power management capability.
Availability
MAX6363HUT31 is available at Aetrix Electronics and suitable for industrial controllers, POS terminals, portable medical devices, smart meters, and battery-backed memory systems requiring stable component supply across long production lifecycles.
Supply support for MAX6363HUT31 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 interface applications in industrial, automotive, and communications markets.
The MAX636x family was developed specifically for microprocessor supervisory functions in battery-backed systems - integrating reset generation, power-fail warning, and seamless SRAM switchover in ultra-small SOT23 packages.
FAQ
What is the exact reset threshold voltage of MAX6363HUT31?
The MAX6363HUT31 has a factory-preset reset threshold of 3.00V, with a guaranteed range of 2.93V (minimum) to 3.08V (maximum) over the full −40°C to +85°C operating temperature range. This value is laser-trimmed during production and does not require external calibration components.
Does MAX6363HUT31 support battery backup for SRAM, and how does it work?
Yes, MAX6363HUT31 supports battery backup for SRAM via its OUT pin. When VCC falls below the reset threshold and drops 150mV below VBATT, the internal MOSFET connects the backup battery to OUT. The BATT ON output goes high to signal this transition, allowing firmware to initiate safe shutdown procedures before power loss.
What is the function of the BATT ON pin on MAX6363HUT31?
The BATT ON pin on MAX6363HUT31 is a dedicated open-drain or push-pull (depending on variant) output that asserts high when the device enters battery-backup mode - i.e., when VCC is below VBATT − 0.15V and the reset threshold. It provides real-time hardware indication of backup power activation for system-level power management.
Can MAX6363HUT31 operate with a 1.2V supply, and what happens to RESET output at that voltage?
Yes, MAX6363HUT31 is fully specified to operate with VCC as low as +1.2V. Its RESET output remains asserted (high, for H-version) down to 1.2V, ensuring continuous reset hold during deep brownout conditions where other supervisors may release prematurely.
Is MAX6363HUT31 pin-compatible with other members of the MAX636x family?
Yes, MAX6363HUT31 shares identical SOT23-6 pinout and footprint with all MAX6361/MAX6363/MAX6364 variants, including different threshold voltages and output types (H/L/P). Pin compatibility allows drop-in substitution within the same functional variant group (e.g., MAX6363HUTxx series).
MAX6363HUT31 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
MAX6363HUT31 FAQ
1.How can I place an order for MAX6363HUT31 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363HUT31 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 reliable?
The price and inventory of MAX6363HUT31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363HUT31 is usually 5 days.
3.What payment methods are accepted for MAX6363HUT31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363HUT31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363HUT31?
MAX6363HUT31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363HUT31 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?
For technical support, including MAX6363HUT31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363HUT31 requirements.
6.How does Aetrix verify that MAX6363HUT31 is sourced from the original manufacturer or authorized distributors?
All MAX6363HUT31 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 meets industry standards.
7.What is the process for return or replacement of MAX6363HUT31?
All MAX6363HUT31 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363HUT31, 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 part is unused and in its original packaging.
Return procedure for MAX6363HUT31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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