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Analog Devices Inc./Maxim Integrated MAX6363PUT26-T
- Part No.:
- MAX6363PUT26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363PUT26-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,847
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Product details
Overview
MAX6363PUT26-T from Maxim Integrated is a low-power microprocessor supervisory circuit with battery switchover and BATT ON status indication. It operates from +1.2V supply, features factory-preset 2.63V reset threshold, delivers 150ms minimum reset timeout, and provides active-low open-drain RESET output in SOT23-6 package. It is used in portable/battery-powered equipment to maintain SRAM backup during brownout.
For engineers reviewing the MAX6363PUT26-T datasheet, MAX6363PUT26-T pinout, MAX6363PUT26-T application, or MAX6363PUT26-T equivalent, key selection criteria include guaranteed reset assertion down to 1.2V, battery-on indicator functionality, precision 2.63V threshold tolerance (±15mV), and SOT23-6 footprint compatibility for space-constrained embedded designs.
Technical Context
The MAX6363PUT26-T implements a dual-supply monitoring architecture where VCC powers system logic and BATT supplies SRAM during power failure. When VCC falls below 2.63V and drops 20mV below VBATT, an internal MOSFET switches OUT from VCC to BATT with ≤2.7Ω on-resistance at 2.8V VBATT.
Its BATT ON output asserts high only in verified battery-backup mode-i.e., when VCC < VTH and VCC < VBATT-and remains inactive during normal operation or invalid backup conditions. Reset propagation delay is ≤280µs over temperature, and the device guarantees RESET/RESET validity down to 1.2V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±15mV - precise undervoltage detection for +2.5V systems with guaranteed margin against false triggering |
| Reset Timeout Period | 150ms minimum - ensures µP completes power-up initialization before release |
| Supply Voltage Range | +1.2V to +5.5V - supports single-cell Li+ and multi-rail embedded systems without external regulators |
| Battery Switchover Hysteresis | 40mV - prevents oscillation during slow VCC decay by requiring 20mV rise above VBATT to revert to main supply |
| Supply Current (VCC) | 15µA typical at +25°C - enables multi-year battery life in always-on backup applications |
| BATT Standby Current | 0.05µA max - minimizes drain on backup cell when VCC is active |
| VCC-to-OUT On-Resistance | 2.7Ω max at 2.38V - limits voltage drop and self-heating under 25mA SRAM load |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 21-0058). RoHS-compliant lead-free variant denoted by "+T"; "-T" suffix indicates standard leaded packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Pulls low during power failure, manual reset, or brownout; requires external pull-up for µP reset input interface |
| 2: GND | Ground reference | Common return path for VCC, BATT, and output currents; must be low-impedance for noise immunity |
| 3: MR | Manual reset input | Debounced logic input; low pulse ≥1µs asserts reset; internal 20kΩ pull-up to VCC |
| 4: VCC | Main supply input | Primary power source; reset asserted when voltage falls below 2.63V; powers internal circuitry and OUT during normal operation |
| 5: OUT | Switched output | Supplies SRAM; sourced from VCC if VCC > VTH and VCC > VBATT, otherwise from greater of VCC or BATT |
| 6: BATT | Backup battery input | Connects to lithium coin cell or rechargeable battery; enables seamless switchover when VCC fails |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Asserts high only when both VCC < 2.63V and VCC < VBATT - provides unambiguous status signal for backup-mode diagnostics |
| Guaranteed 1.2V Operation | RESET/RESET outputs remain functional even as VCC decays to 1.2V - ensures fail-safe behavior during deep brownout |
| 40mV Switchover Hysteresis | Prevents chattering during slow VCC recovery by requiring 20mV rise above VBATT before reverting to main supply |
| 150ms Minimum Reset Timeout | Meets JEDEC JESD8-12B requirements for µP power-up stabilization across industrial temperature range |
| Power-Supply Transient Immunity | Rejects negative-going transients ≤30µs at 100mV overdrive - eliminates spurious resets from ESD or switching noise |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Wearable glucose monitor retaining real-time sensor data during battery replacement or low-voltage shutdown. IC Role / Device Role / Timing Role: Supervisory circuit providing BATT ON flag and SRAM backup switchover within 280µs of VCC collapse. Use Value: Prevents loss of critical patient history by maintaining volatile memory via coin-cell backup with <0.05µA standby drain. | Use Scenario: Remote environmental sensor node operating on primary battery with supercapacitor backup. IC Role / Device Role / Timing Role: Monitors main supply rail and triggers automatic SRAM retention when voltage drops below 2.63V. Use Value: Enables deterministic firmware recovery after brownout using 150ms reset timeout synchronized to µP power-up sequence. |
| POS Terminal Memory Backup | Smart Utility Meter SRAM Hold |
Use Scenario: Point-of-sale terminal preserving transaction buffer during AC power interruption. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting BATT ON and switching OUT to backup source within 40mV hysteresis window. Use Value: Guarantees atomic write completion to SRAM before main supply collapse, eliminating partial-transaction corruption. | Use Scenario: Electricity meter retaining time-of-use billing data during grid outage. IC Role / Device Role / Timing Role: Battery-backed supervisor delivering 2.63V threshold accuracy ±15mV over -40°C to +85°C. Use Value: Ensures >10-year backup lifetime with coin-cell due to 0.05µA max BATT standby current and 40mV hysteresis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT26-T | Same 2.63V threshold and BATT ON function but offered in higher-grade H-grade (-40°C to +85°C) with tighter parametric tolerances | Preferred for extended-temperature industrial deployments requiring enhanced reset timing stability | Select when operating beyond standard commercial temperature range or requiring tighter VTH drift specification |
| TPS3808G33DBVR | 2.93V fixed threshold, no BATT ON output, push-pull RESET, 350ms timeout - lacks battery switchover capability | Suitable only for basic reset supervision without backup power management | Choose only if battery backup is unnecessary and longer reset timeout is acceptable |
Compared with MAX6363PUT26-T, MAX6363HUT26-T offers identical functionality with improved temperature performance, while TPS3808G33DBVR provides simpler reset-only supervision but cannot replace battery switchover or BATT ON signaling - making it unsuitable for SRAM-retention-critical applications.
Availability
MAX6363PUT26-T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, and smart utility meters requiring stable component supply with long-term lifecycle support.
Supply support for MAX6363PUT26-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 connectivity in demanding environments.
The MAX6361–MAX6364 family was engineered specifically for microprocessor systems needing reliable power monitoring and seamless battery backup-targeting portable, industrial, and metering applications where data integrity during power transitions is critical.
FAQ
What is the exact reset threshold voltage of the MAX6363PUT26-T?
The MAX6363PUT26-T has a factory-preset reset threshold of 2.63V with ±15mV tolerance over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and guaranteed per the Electrical Characteristics table in the official datasheet. The "26" suffix in MAX6363PUT26-T explicitly denotes the 2.63V threshold variant, confirmed in the Ordering Information section and Selector Guide.
Does the MAX6363PUT26-T provide battery switchover functionality, and how does it work?
Yes, the MAX6363PUT26-T provides automatic battery switchover. When VCC falls below 2.63V and drops at least 20mV below VBATT, the internal MOSFET connects BATT to OUT. The device maintains this state until VCC rises 20mV above VBATT, ensuring 40mV hysteresis. This mechanism preserves SRAM contents during brownout, and the BATT ON output signals active backup mode - a core function confirmed in the Pin Description and Detailed Description sections.
What is the purpose of the BATT ON output on the MAX6363PUT26-T?
The BATT ON output on the MAX6363PUT26-T is a dedicated status indicator that goes high only when the device is actively supplying OUT from the backup battery - i.e., when both VCC < 2.63V and VCC < VBATT. It is not asserted during normal operation or invalid backup conditions. This signal enables system-level diagnostics and power-management decisions, as explicitly defined in the Pin Description and Table 1 (Input and Output Status in Battery-Backup Mode).
Can the MAX6363PUT26-T operate with a 1.2V supply, and what functions remain active?
Yes, the MAX6363PUT26-T operates down to +1.2V on VCC or VBATT, and all critical functions remain guaranteed: RESET/RESET outputs retain valid logic levels, reset assertion is maintained during brownout, and BATT ON correctly indicates backup mode. This 1.2V minimum is specified in the Absolute Maximum Ratings and Electrical Characteristics tables, and the device continues to monitor VCC and manage switchover even at this ultra-low voltage.
What package type and footprint does the MAX6363PUT26-T use?
The MAX6363PUT26-T uses a 6-pin SOT23 package (outline U6-1, land pattern 90-0175), with pin 1 marked by a dot or notch. Its compact 2.9mm × 1.6mm footprint and 1.1mm height make it suitable for space-constrained PCB layouts. The "-T" suffix confirms tape-and-reel packaging for automated assembly, and the device is available in both leaded and lead-free versions per the Package Information section.
MAX6363PUT26-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:
- 2.63V
- 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-6
MAX6363PUT26-T FAQ
1.How can I place an order for MAX6363PUT26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363PUT26-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 MAX6363PUT26-T reliable?
The price and inventory of MAX6363PUT26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363PUT26-T is usually 5 days.
3.What payment methods are accepted for MAX6363PUT26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363PUT26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363PUT26-T?
MAX6363PUT26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363PUT26-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 MAX6363PUT26-T?
For technical support, including MAX6363PUT26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363PUT26-T requirements.
6.How does Aetrix verify that MAX6363PUT26-T is sourced from the original manufacturer or authorized distributors?
All MAX6363PUT26-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 MAX6363PUT26-T meets industry standards.
7.What is the process for return or replacement of MAX6363PUT26-T?
All MAX6363PUT26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363PUT26-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 MAX6363PUT26-T part is unused and in its original packaging.
Return procedure for MAX6363PUT26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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