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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 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,776
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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 status indication, designed for SRAM backup in brownout conditions. It features a factory-preset 4.40V reset threshold, operates from +1.2V supply, guarantees RESET/RESET validity down to 1.2V, and delivers 150ms minimum reset timeout. 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 active-low push-pull reset output, battery-on indicator functionality, SOT23-6 package compatibility, and guaranteed 1.2V operation during VCC or VBATT supply collapse.
Technical Context
The MAX6363LUT44-T implements precision voltage monitoring using an internal bandgap reference to detect VCC falling below 4.40V ±1.5%, triggering reset assertion and initiating automatic battery switchover when VCC drops below VBATT by ≥20mV. Its BATT ON output transitions high only in validated battery-backup mode - confirmed by both VCC < VTH and VCC < VBATT conditions.
It integrates a low-leakage (≤0.05µA) battery path with MOSFET-based switchover, supports up to 150mA load from VCC and up to 10mA from VBATT, and maintains functional reset signaling even as VCC or VBATT decays to 1.2V - critical for preserving SRAM state during deep brownouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.40V ±1.5% - sets precise power-fail detection point for +5V systems; ensures reset asserts before logic corruption occurs. |
| Operating Supply Range | +1.2V to +5.5V - enables full functionality during deep brownout or single-cell Li+ battery operation (2.3–3.6V). |
| Reset Timeout Period | 150ms minimum - guarantees µP remains held in reset long enough for stable power recovery and clock stabilization. |
| Supply Current (VCC) | 15µA typical at VCC = 5.5V - minimizes quiescent drain on main supply in always-on monitoring applications. |
| Battery Standby Current | 0.05µA max at TA = −40°C to +85°C - extends shelf life of backup battery in long-term storage or infrequent use scenarios. |
| Output Type | Active-low push-pull RESET - eliminates need for external pull-up resistor; drives µP reset input directly with rail-to-rail logic levels. |
| BATT ON Output | Dedicated open-drain high-active signal - provides unambiguous system-level indication of active battery-backup mode for firmware logging or LED control. |
Pinout & Package
MAX6363LUT44-T is housed in a RoHS-compliant 6-pin SOT23 package (U6-1 outline), footprint-compatible with standard 0.95mm pitch PCB layouts and reflow soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Common return path for all internal circuits; must be low-impedance connection to system ground plane. |
| VCC | Main supply input | Primary power source for device operation and OUT switching; reset asserted when VCC falls below 4.40V. |
| BATT | Backup battery input | Secondary power source; automatically powers OUT when VCC < VTH and VCC < VBATT by ≥20mV. |
| OUT | Switched output | Supplies SRAM or other critical circuitry; sourced from VCC if active, else from greater of VCC or VBATT. |
| RESET | Active-low push-pull reset | Drives µP reset pin low during power failure, brownout, or manual reset; no external pull-up required. |
| BATT ON | Battery-active status indicator | Open-drain output pulled high externally; signals firmware/hardware that backup battery is actively supplying OUT. |
Key Features
| Feature | Design Value |
|---|---|
| Battery switchover hysteresis | 40mV (20mV rise + 20mV fall) - prevents oscillation during slow VCC decay near VBATT voltage. |
| Reset propagation delay | 280µs max at 10V/ms VCC fall rate - ensures timely reset assertion before supply collapse compromises µP integrity. |
| VCC transient immunity | 30µs maximum glitch duration at 100mV overdrive - rejects common noise spikes without false resets. |
| Low-voltage reset validity | RESET/RESET functional down to 1.2V VCC or VBATT - maintains supervision capability through full battery discharge range. |
| SRAM power path protection | Internal MOSFET with ≤2.7Ω on-resistance at VBATT = 2.8V - limits voltage drop and heating during backup operation. |
Applications
| Portable Medical Monitors | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered ECG or glucose meter retaining real-time sensor data during AC power loss or battery swap. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and switches SRAM to coin-cell backup; BATT ON confirms switchover to firmware. Use Value: Prevents data loss during 100ms–2s power interruption; 0.05µA battery standby current enables >5-year shelf life. |
Use Scenario: Remote environmental sensor node operating on Li-SOCl₂ battery, logging temperature/pressure hourly. IC Role / Device Role / Timing Role: Monitors 3.6V regulated supply; asserts reset and activates backup when solar charger fails or battery depletes below 3.0V. Use Value: 4.40V threshold aligns with end-of-life detection for 3.6V primary battery; 150ms reset hold ensures clean µC reboot before next sample cycle. |
| Retail POS Terminals | Smart Utility Meters |
Use Scenario: Credit card terminal switching from wall adapter to internal Li-ion during brief AC outage to complete transaction. IC Role / Device Role / Timing Role: Controls SRAM holding encrypted payment keys and last-transaction buffer; BATT ON triggers secure shutdown sequence. Use Value: Push-pull RESET eliminates external components; 1.2V operation preserves memory contents until battery reaches 2.2V cutoff. |
Use Scenario: AMI meter maintaining timekeeping and tariff data during grid blackout lasting minutes to hours. IC Role / Device Role / Timing Role: Supervises 5.0V DC-DC output; initiates switchover to supercapacitor bank and signals backup mode via BATT ON. Use Value: 4.40V threshold avoids premature switchover during line sags; 150ms timeout exceeds crystal oscillator start-up time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT44-T | Same 4.40V threshold and BATT ON function, but uses active-low open-drain RESET output requiring external pull-up. | Suitable where board already includes pull-up resistors or level-shifting is needed for legacy µP inputs. | Select when interoperability with existing open-drain reset networks is required; not drop-in compatible due to output structure. |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no BATT ON output, no battery switchover; offers watchdog timer and adjustable delay. | Applicable only for basic reset supervision without backup management; requires separate battery control circuitry. | Choose only if system uses dedicated battery controller and needs watchdog functionality; lacks MAX6363LUT44-T's integrated switchover. |
Compared with MAX6363HUT44-T, the MAX6363LUT44-T reduces BOM count by eliminating the RESET pull-up resistor; compared with TPS3808G33DBVR, it delivers unique battery-backup coordination and status signaling essential for SRAM retention in portable systems.
Availability
MAX6363LUT44-T is available at Aetrix Electronics and suitable for portable medical monitors, industrial data loggers, retail POS terminals, and smart utility meters requiring stable component supply across extended product lifecycles.
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 management, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX6361–MAX6364 family was engineered specifically for microprocessor systems needing robust power-supply monitoring and seamless battery-backed SRAM retention - prioritizing ultra-low quiescent current, wide supply range, and deterministic switchover behavior.
FAQ
What is the exact reset threshold voltage of the MAX6363LUT44-T?
The MAX6363LUT44-T has a factory-trimmed reset threshold of 4.40V with ±1.5% tolerance over temperature (−40°C to +85°C). This value is laser-trimmed during production and verified per the Electrical Characteristics table in the datasheet. The '44' suffix in MAX6363LUT44-T explicitly denotes the 4.40V threshold variant, distinct from other members like MAX6363LUT26 (2.63V) or MAX6363LUT31 (3.08V).
Does the MAX6363LUT44-T provide battery switchover functionality?
Yes, the MAX6363LUT44-T integrates automatic battery switchover: when VCC falls below both the 4.40V reset threshold and VBATT by at least 20mV, it disconnects VCC from OUT and connects VBATT to OUT. This preserves power to attached SRAM. The BATT ON pin goes high to confirm active battery mode, and the device draws only 0.05µA from VBATT in standby - enabling multi-year backup operation.
What is the function of the BATT ON pin on the MAX6363LUT44-T?
The BATT ON pin on the MAX6363LUT44-T is an open-drain output that goes high (when pulled up externally) exclusively during validated battery-backup mode - i.e., only when both VCC < VTH (4.40V) and VCC < VBATT by ≥20mV. It provides unambiguous hardware signaling to the host system that backup power is active, enabling firmware actions like data flush, secure shutdown, or LED indication without polling registers or timing delays.
Can the MAX6363LUT44-T operate with a 1.2V supply?
Yes, the MAX6363LUT44-T is fully specified to operate from VCC or VBATT as low as +1.2V. Both RESET and RESET outputs remain functional down to this voltage, and the internal comparators maintain accuracy. This allows reliable supervision during deep brownouts or operation from single-cell alkaline or LiFePO₄ batteries, ensuring SRAM retention continues until the backup source reaches end-of-life.
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 0.95mm pin pitch and standardized land pattern 90-0175. It is RoHS-compliant and available in lead-free form (denoted by '+T' suffix). The pinout is identical across the MAX6361–MAX6364 family: GND, VCC, BATT ON, BATT, OUT, RESET - enabling layout reuse across variants with different thresholds or features.
MAX6363LUT44-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:
- 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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