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Analog Devices Inc./Maxim Integrated MAX6363LUT26+
- Part No.:
- MAX6363LUT26+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363LUT26+.pdf
- Description:
- MAX6363 LOW-POWER MICROPROCESSO
- Quantity:
- Payment:
- Shipping:
Inventory:270
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Product details
Overview
MAX6363LUT26+ from Maxim Integrated is a low-power microprocessor supervisory circuit with battery switchover and BATT ON indicator functionality, designed for SRAM backup in brownout conditions. It operates from +1.2V supply, features factory-preset 2.63V reset threshold, 150ms minimum reset timeout, and active-low push-pull RESET output. Used in portable/battery-powered equipment requiring reliable power-fail detection and seamless backup power handover.
For engineers reviewing the MAX6363LUT26+ datasheet, MAX6363LUT26+ pinout, MAX6363LUT26+ application, or MAX6363LUT26+ equivalent, key selection criteria include guaranteed reset assertion down to 1.2V, battery-on status signaling, SOT23-6 package compatibility, and precise 2.63V ±1.5% threshold tolerance over -40°C to +85°C.
Technical Context
The MAX6363LUT26+ integrates precision voltage monitoring, automatic VCC-to-BATT switchover logic, and a dedicated BATT ON output that asserts high only when OUT is powered from the backup battery. Its internal comparator monitors VCC against a trimmed 2.63V threshold with ±1.5% accuracy over temperature and supply.
It implements hysteresis-based switchover: OUT connects to BATT when VCC falls below VTH *and* VBATT exceeds VCC by ≥20mV; reverts to VCC when VCC rises ≥20mV above VBATT. The BATT ON signal reflects this mode state directly, with no external components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% - guarantees reliable detection of 2.5V system rail brownout |
| Reset Timeout Period | 150ms (min) - ensures µP completes full reset sequence before release |
| Supply Voltage Range | +1.2V to +5.5V - supports operation during deep battery discharge or low-VCC startup |
| Reset Output Type | Active-low push-pull - drives µP reset pin directly without external pull-up |
| Battery Switchover Hysteresis | 40mV (20mV up/down) - prevents oscillation during slow VCC decay near threshold |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Supply Current (VCC) | 15µA typ at 2.8V - enables multi-year battery life in always-on backup systems |
Pinout & Package
Package: 6-pin SOT23 (U6-1), RoHS-compliant, footprint compatible with industry-standard 0.95mm pitch land pattern (Maxim land pattern 90-0175).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low push-pull reset output | Drives µP reset input directly; sinks 20mA; valid down to 1.2V VCC |
| 2: GND | Ground reference | Common return for VCC, BATT, and all internal circuits |
| 3: MR | Manual reset input | Debounced TTL/CMOS-compatible input; internal 20kΩ pull-up to VCC |
| 4: VCC | Main supply input | Primary power source; reset asserted when VCC < 2.63V |
| 5: OUT | Power output | Switches between VCC and BATT; sources up to 150mA from VCC, 10mA from BATT |
| 6: BATT | Backup battery input | Connects to Li+ or coin cell; enables SRAM retention when VCC fails |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Dedicated BATT ON pin asserts high only during active battery-backup mode-enables real-time system-level power-source awareness without software polling |
| Precision Reset Threshold | 2.63V ±1.5% over -40°C to +85°C-eliminates need for external resistor divider calibration in 2.5V rail monitoring |
| Guaranteed 1.2V Operation | RESET remains functional even as VCC decays to 1.2V-ensures deterministic reset behavior during deep brownout |
| Low Quiescent Current | 15µA typical supply current at 2.8V-extends shelf life and runtime in battery-backed SRAM applications |
| Integrated Switchover Logic | Automatic 40mV hysteresis-controlled VCC/BATT handover-removes requirement for external MOSFET control circuitry |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG monitoring unit powered by rechargeable Li+ battery with main DC adapter. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and triggers automatic switchover to backup battery upon AC loss; BATT ON signals host MCU to enter low-power data-save mode. Use Value: Prevents data corruption during power interruption; BATT ON enables deterministic firmware response within 100ns of switchover. | Use Scenario: Remote environmental sensor node logging temperature/humidity to SPI FRAM, powered by solar-charged Li-ion. IC Role / Device Role / Timing Role: Monitors 2.5V system rail; asserts RESET and switches OUT to BATT during dusk-induced voltage sag; BATT ON confirms backup activation to wireless transceiver. Use Value: Guarantees SRAM/FRAM write completion before power collapse; eliminates need for external power-fail interrupt generation. |
| POS Terminal Battery Backup | Smart Meter Real-Time Clock |
Use Scenario: Retail point-of-sale terminal with supercapacitor-assisted backup during brief grid outage. IC Role / Device Role / Timing Role: Detects 5V rail collapse below 2.63V; initiates controlled shutdown via RESET pulse while routing backup power to secure memory and crypto module via OUT. Use Value: Meets PCI PTS 6.0 power-fail data integrity requirements; 150ms timeout ensures full EEPROM commit before power loss. | Use Scenario: Electricity meter with RTC and tamper-detection SRAM, backed by primary lithium battery. IC Role / Device Role / Timing Role: Provides fail-safe 3.0V rail supervision; BATT ON output enables meter SoC to disable non-critical peripherals and extend battery life during main supply failure. Use Value: Extends 10-year battery lifetime by reducing backup current to <1µA in maintenance mode; BATT ON allows precise energy budgeting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT26+ | Same 2.63V threshold, but rated for -40°C to +125°C industrial temp range; higher max supply current (35µA) | Suitable for under-hood automotive or high-temp industrial enclosures where ambient exceeds +85°C | Select when extended temperature qualification is mandatory; otherwise identical functional behavior |
| TPS3808G33DBVR | 2.93V fixed threshold; open-drain RESET; no BATT ON output; requires external pull-up | Lacks battery switchover and status indication-requires additional discrete circuitry for SRAM backup management | Choose only if BATT ON functionality is unnecessary and system already uses open-drain reset architecture |
Compared with MAX6363HUT26+, the MAX6363LUT26+ offers identical electrical performance at lower cost for commercial-temperature applications; versus TPS3808G33DBVR, it delivers integrated battery management and status signaling-reducing BOM count by two MOSFETs and one comparator in SRAM backup designs.
Availability
MAX6363LUT26+ is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, smart meters, and battery-backed memory systems requiring stable component supply across production lifecycles.
Supply support for MAX6363LUT26+ 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, computing, and communications markets.
The MAX6361–MAX6364 family was engineered specifically for microprocessor systems needing compact, low-power, battery-backed power supervision-with emphasis on SRAM retention, brownout immunity, and minimal external component count.
FAQ
What is the exact reset threshold voltage of MAX6363LUT26+ and how tightly is it specified?
The MAX6363LUT26+ has a factory-trimmed reset threshold of 2.63V with a guaranteed tolerance of ±1.5% over the full -40°C to +85°C operating temperature range and supply voltage from +1.2V to +5.5V. This specification is production-tested and documented in the Electrical Characteristics table of the official datasheet (Rev 4, 10/11), ensuring consistent 2.5V rail monitoring without external calibration.
Does MAX6363LUT26+ provide a dedicated output to indicate battery-backup mode, and how is it used?
Yes, MAX6363LUT26+ includes a dedicated BATT ON output (Pin 3 in MAX6363 pinout) that asserts high only when the device is actively sourcing power from the backup battery (i.e., VCC < VTH and VBATT > VCC + 20mV). This signal enables host microcontrollers to trigger low-power data-save routines or disable non-critical peripherals immediately upon switchover-without software polling or external sensing circuitry.
Can MAX6363LUT26+ operate reliably when the main supply voltage drops below 2.0V?
Yes, MAX6363LUT26+ is fully specified to operate down to +1.2V on VCC or VBATT. Its internal circuitry-including the reset comparator, BATT ON logic, and push-pull RESET driver-remains functional and guaranteed to meet timing and voltage specifications even as VCC decays to 1.2V. This ensures deterministic reset assertion and battery switchover during deep brownout conditions common in battery-depleted systems.
What is the reset timeout period of MAX6363LUT26+, and is it adjustable?
The MAX6363LUT26+ provides a fixed minimum reset timeout period of 150ms after VCC rises above the 2.63V threshold. This duration is internally generated and not user-adjustable; it is guaranteed over temperature and supply voltage per the datasheet's Electrical Characteristics table. The 150ms window ensures complete microprocessor initialization and memory stabilization before release.
How does MAX6363LUT26+ handle the transition between main supply and battery power?
MAX6363LUT26+ uses a dual-threshold hysteresis scheme: it switches OUT from VCC to BATT when VCC falls below 2.63V *and* VBATT exceeds VCC by ≥20mV; it switches back to VCC when VCC rises ≥20mV above VBATT. This 40mV total hysteresis prevents oscillation during slow VCC decay and ensures clean, bounce-free power-source handover critical for SRAM data integrity.
MAX6363LUT26+ 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:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6363LUT26+ FAQ
1.How can I place an order for MAX6363LUT26+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363LUT26+ 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 MAX6363LUT26+ reliable?
The price and inventory of MAX6363LUT26+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363LUT26+ is usually 5 days.
3.What payment methods are accepted for MAX6363LUT26+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363LUT26+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363LUT26+?
MAX6363LUT26+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363LUT26+ 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 MAX6363LUT26+?
For technical support, including MAX6363LUT26+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363LUT26+ requirements.
6.How does Aetrix verify that MAX6363LUT26+ is sourced from the original manufacturer or authorized distributors?
All MAX6363LUT26+ 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 MAX6363LUT26+ meets industry standards.
7.What is the process for return or replacement of MAX6363LUT26+?
All MAX6363LUT26+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363LUT26+, 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 MAX6363LUT26+ part is unused and in its original packaging.
Return procedure for MAX6363LUT26+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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