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Analog Devices Inc./Maxim Integrated MAX6363LUT44+T
- Part No.:
- MAX6363LUT44+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363LUT44+T.pdf
- Description:
- IC SUPERVISOR MPU LP SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,425
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Product details
Overview
MAX6363LUT44+T from Maxim Integrated is a low-power microprocessor supervisory circuit with battery switchover and BATT ON indicator output, designed for SRAM backup in brownout conditions. It operates from +1.2V supply, features factory-preset 4.40V reset threshold (±1.5% over temperature), 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 activation.
For engineers reviewing the MAX6363LUT44+T datasheet, MAX6363LUT44+T pinout, MAX6363LUT44+T application, or MAX6363LUT44+T equivalent, key selection criteria include its 4.40V reset threshold accuracy, guaranteed RESET/RESET validity down to 1.2V, battery-on status signaling capability, SOT23-6 package footprint, and compatibility with +2.5V/+3.3V/+5.0V supply monitoring.
Technical Context
The MAX6363LUT44+T implements a precision voltage monitor with internal bandgap reference and comparator to assert reset when VCC falls below 4.40V. Its integrated MOSFET switch enables automatic switchover from VCC to VBATT when VCC drops below VBATT by ≥20mV, with 40mV hysteresis preventing oscillation during slow VCC decay.
BATT ON output goes high exclusively in battery-backup mode-i.e., when VCC < VTH and VCC < VBATT-and remains asserted while those conditions hold. The device guarantees RESET assertion down to 1.2V VCC or VBATT, and includes power-supply transient immunity validated up to 100ns glitches at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.40V ±1.5% (guaranteed over -40°C to +85°C); matches +5.0V supply monitoring with margin |
| Reset Timeout Period | 150ms minimum; ensures µP completes power-up initialization before release |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT); supports single-cell Li+ and multi-rail systems |
| Supply Current | 15µA typical at VCC = 5.5V; enables >10-year battery life in backup mode |
| Battery Standby Current | 0.05µA max at -40°C to +85°C; minimizes drain on backup cell during long storage |
| Output Type | Active-low push-pull RESET; drives µP reset pin directly without external pull-up |
| VCC-to-OUT On-Resistance | 2.75Ω max at VCC = 4.75V; supports 150mA SRAM load with <400mV dropout |
Pinout & Package
Package: 6-pin SOT23 (U6-1), RoHS-compliant, -40°C to +85°C operating range.
| 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 all analog/digital functions; must be low-impedance |
| 3: MR | Manual reset input | Debounced TTL/CMOS-compatible input; internal 20kΩ pull-up to VCC |
| 4: VCC | Main supply input | Primary power source; monitored for reset assertion; powers internal circuitry |
| 5: OUT | Power output | Switches between VCC and VBATT; sources up to 150mA to SRAM or logic |
| 6: BATT | Backup battery input | Connects to Li+ or coin cell; activates switchover when VCC falls below VBATT −20mV |
Key Features
| Feature | Design Value |
|---|---|
| Battery-on output indicator | BATT ON pin asserts high only during active battery-backup mode-enables system-level status monitoring without polling |
| Precision 4.40V reset threshold | ±1.5% tolerance over full temperature range ensures consistent +5.0V supply monitoring across environments |
| Guaranteed 1.2V operation | RESET/RESET remains functional even as VCC or VBATT decays to 1.2V-critical for graceful shutdown of SRAM |
| Automatic battery switchover | Internal MOSFET with 40mV hysteresis prevents chattering during slow VCC brownout transitions |
| Low quiescent current | 15µA typical supply current extends shelf life of backup batteries in unpowered systems |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered ECG monitor storing waveform data in SRAM during AC power loss. IC Role / Device Role / Timing Role: MAX6363LUT44+T monitors main 3.3V rail and switches SRAM to coin-cell backup within 10µs of VCC drop below 4.40V. Use Value: Prevents data corruption by maintaining SRAM voltage above retention threshold during 500ms AC outage. | Use Scenario: Remote environmental sensor logging temperature/humidity to SRAM before transmitting via LoRaWAN. IC Role / Device Role / Timing Role: MAX6363LUT44+T asserts BATT ON signal to MCU, triggering immediate flash commit and sleep entry upon mains failure. Use Value: Enables deterministic firmware response to power failure using dedicated hardware flag-not software polling. |
| POS Terminals | Smart Meters |
Use Scenario: Retail terminal with volatile transaction buffer powered by SRAM, backed by supercapacitor. IC Role / Device Role / Timing Role: MAX6363LUT44+T provides 150ms reset pulse to lock MCU during capacitor discharge, then maintains SRAM power via BATT path. Use Value: Guarantees atomic write completion for last-sale record before power collapse. | Use Scenario: Electricity meter retaining tamper logs and billing cycles in SRAM during grid outage. IC Role / Device Role / Timing Role: MAX6363LUT44+T uses BATT ON output to wake secure element and encrypt log entries before backup activation. Use Value: Provides hardware-synchronized security event capture independent of MCU clock stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT44+T | Same 4.40V threshold, but active-low open-drain RESET output | Requires external pull-up resistor; less drive strength than push-pull | Select when interfacing with legacy µP reset inputs requiring open-drain compatibility |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, 2.9V to 6.0V supply range | Lacks BATT ON output and battery switchover functionality | Choose only if battery backup is not required and 3.3V monitoring suffices |
Compared with MAX6363HUT44+T, the MAX6363LUT44+T offers stronger reset drive and eliminates external components; versus TPS3808G33DBVR, it delivers unique battery management capability essential for SRAM retention but trades off threshold flexibility.
Availability
MAX6363LUT44+T 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 and long-term lifecycle support.
Supply support for MAX6363LUT44+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, sensing, and connectivity applications.
The MAX6361–MAX6364 family was engineered specifically for microprocessor systems needing robust power supervision with integrated battery switchover-targeting portable, industrial, and critical embedded applications where data integrity during power transitions is non-negotiable.
FAQ
What is the exact reset threshold voltage of the MAX6363LUT44+T?
The MAX6363LUT44+T has a factory-preset reset threshold of 4.40V, with guaranteed tolerance of ±1.5% over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during production and does not require external adjustment. The threshold is referenced to VCC and remains stable under load, enabling precise monitoring of +5.0V supplies with adequate margin against ripple and noise.
Does the MAX6363LUT44+T provide battery switchover functionality?
Yes, the MAX6363LUT44+T integrates automatic battery switchover: when VCC falls below the reset threshold and also drops below VBATT by at least 20mV, an internal MOSFET connects the backup battery to the OUT pin. The device maintains 40mV hysteresis to prevent oscillation during slow brownouts. This function is core to the MAX6363LUT44+T's role in preserving SRAM contents during power failure.
What is the purpose of the BATT ON output on the MAX6363LUT44+T?
The BATT ON output on the MAX6363LUT44+T goes high exclusively when the device is in battery-backup mode-i.e., when both VCC < VTH and VCC < VBATT. It serves as a hardware flag for the host system to detect backup activation without software polling. In the MAX6363LUT44+T, this signal enables deterministic firmware responses such as immediate data commit or security logging before full power loss.
Can the MAX6363LUT44+T operate with a 1.2V supply?
Yes, the MAX6363LUT44+T guarantees full functionality-including RESET assertion, BATT ON indication, and battery switchover-at supply voltages as low as +1.2V on either VCC or VBATT. This capability ensures reliable SRAM retention and controlled shutdown even as backup cells deplete, a key design requirement confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet.
What package type and footprint does the MAX6363LUT44+T use?
The MAX6363LUT44+T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058), with standard 0.95mm pitch and 2.9mm × 1.6mm body dimensions. Its land pattern (90-0175) is compatible with automated assembly and reflow processes. The "+T" suffix indicates lead-free, RoHS-compliant construction, and the top-mark "AAGL" identifies the MAX6363LUT44+T variant per Maxim's marking code table.
MAX6363LUT44+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- 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-6
MAX6363LUT44+T FAQ
1.How can I place an order for MAX6363LUT44+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363LUT44+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 MAX6363LUT44+T reliable?
The price and inventory of MAX6363LUT44+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363LUT44+T is usually 5 days.
3.What payment methods are accepted for MAX6363LUT44+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363LUT44+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363LUT44+T?
MAX6363LUT44+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363LUT44+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 MAX6363LUT44+T?
For technical support, including MAX6363LUT44+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363LUT44+T requirements.
6.How does Aetrix verify that MAX6363LUT44+T is sourced from the original manufacturer or authorized distributors?
All MAX6363LUT44+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 MAX6363LUT44+T meets industry standards.
7.What is the process for return or replacement of MAX6363LUT44+T?
All MAX6363LUT44+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363LUT44+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 MAX6363LUT44+T part is unused and in its original packaging.
Return procedure for MAX6363LUT44+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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