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Analog Devices Inc./Maxim Integrated MAX6363LUT23-T
- Part No.:
- MAX6363LUT23-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363LUT23-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,325
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Product details
Overview
MAX6363LUT23-T 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 a factory-preset 2.32V 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 activation.
For engineers reviewing the MAX6363LUT23-T datasheet, MAX6363LUT23-T pinout, MAX6363LUT23-T application, or MAX6363LUT23-T equivalent, key selection criteria include its 2.32V precision reset threshold, guaranteed RESET/RESET validity down to 1.2V, battery-on status indication, SOT23-6 package footprint, and support for VCC-to-BATT switchover with 40mV hysteresis.
Technical Context
The MAX6363LUT23-T implements a dual-supply monitoring architecture where VCC powers the system during normal operation and BATT supplies OUT when VCC falls below the 2.32V threshold and VBATT exceeds VCC by ≥20mV. Its internal MOSFET enables automatic switchover with ≤2.7Ω on-resistance at VBATT = 2.8V and 25mA load.
Unlike the MAX6361 (manual reset), MAX6362 (watchdog), or MAX6364 (adjustable RESET IN), the MAX6363 variant provides dedicated BATT ON output that asserts high exclusively in battery-backup mode - a confirmed function per Pin Description and Table 1 - and does not incorporate watchdog timer, manual reset input, or auxiliary reset comparator circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (factory preset; triggers reset when VCC falls below this voltage) |
| Operating Supply Range | +1.2V to +5.5V (supports ultra-low-voltage systems and standard 3.3V/5V rails) |
| Reset Timeout Period | 150ms minimum (ensures µP completes power-up initialization before release) |
| Supply Current (VCC) | 10µA typical at VCC = 2.8V (enables multi-year battery life in backup mode) |
| Battery Standby Current | 0.02µA typical at TA = +25°C (minimizes drain on backup cell during long-term storage) |
| Output Type | Active-low push-pull RESET (drives µP reset pin directly without external pull-up) |
| VCC-to-OUT On-Resistance | 2.7Ω max at VCC = 2.38V, IOUT = 25mA (low-loss power path during main supply operation) |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 2.9mm × 1.6mm × 1.1mm height, RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low push-pull reset output | Drives µP reset pin directly; sinks 20mA; valid down to 1.2V supply |
| 2: GND | Ground reference | Common return for VCC, BATT, and output circuits; required for reset timing accuracy |
| 3: MR | Manual reset input | Not connected internally on MAX6363; unused pin (no internal pull-up or logic) |
| 4: VCC | Main supply input | Primary power source; monitored for reset assertion; powers internal circuitry above 1.2V |
| 5: OUT | Power output | Switches between VCC and BATT; sources up to 150mA from VCC or 10mA from BATT |
| 6: BATT | Backup battery input | Connects to Li+ or coin cell; enables switchover when VCC < VBATT −20mV |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Dedicated BATT ON pin asserts high only during active battery-backup mode - enables system-level status monitoring without software polling |
| Automatic Switchover Hysteresis | 40mV (VBATT − VCC) hysteresis prevents oscillation during slow VCC decay near threshold |
| Low-Voltage Operation Guarantee | RESET/RESET remains functional down to 1.2V VCC or VBATT - ensures reliable reset assertion even under deep brownout |
| Ultra-Low Battery Drain | 20nA max BATT standby current - extends shelf life of backup cells beyond 10 years |
| Transient Immunity | Withstands 30µs negative-going transients 100mV below VTH - eliminates false resets from ESD or switching noise |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG monitoring unit powered by primary battery with coin-cell backup. IC Role / Device Role / Timing Role: Supervisory circuit monitors main supply, asserts reset on brownout, and switches SRAM to backup power while signaling BATT ON to firmware. Use Value: Preserves patient waveform data across power loss; BATT ON signal triggers low-power logging mode. | Use Scenario: Remote sensor node logging temperature/pressure in oil-field infrastructure. IC Role / Device Role / Timing Role: Detects 24V DC supply collapse, holds µP in reset until stable, and activates backup power to retain last 72 hours of readings. Use Value: Eliminates need for external supervisor + discrete switch; 2.32V threshold matches 3.3V LDO dropout margin. |
| POS Terminals | Smart Meters |
Use Scenario: Retail terminal with lithium-thionyl chloride backup during AC outage. IC Role / Device Role / Timing Role: Provides 150ms reset hold time after power interruption and asserts BATT ON to disable non-critical peripherals. Use Value: Prevents transaction corruption; BATT ON enables fast hardware-based peripheral shutdown. | Use Scenario: Electricity meter retaining tamper logs and billing cycles during grid failure. IC Role / Device Role / Timing Role: Monitors 3.3V rail derived from metering ASIC; switches real-time clock and FRAM to backup when VCC drops below 2.32V. Use Value: Guarantees timekeeping continuity and secure log retention without firmware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363PUT23-T | Same 2.32V threshold and BATT ON function, but uses active-low open-drain RESET output requiring external pull-up resistor | Suitable where µP reset pin accepts open-drain interface and board layout allows pull-up placement | Select when system already uses open-drain reset topology or requires level-shifting capability |
| TPS3808G125DBVR | 2.5V reset threshold, no BATT ON output, supports adjustable delay via capacitor, 1.8V–6.0V supply range | Used in non-battery-backup systems needing programmable reset delay and higher threshold tolerance | Choose when backup switchover is unnecessary and precise delay tuning is required over BATT ON signaling |
Compared with MAX6363LUT23-T, the MAX6363PUT23-T offers identical supervision and switchover functions but requires external biasing for reset signaling, whereas the TPS3808G125DBVR provides flexible timing control at the cost of losing battery-status indication - making MAX6363LUT23-T optimal for space-constrained, battery-backed SRAM retention designs.
Availability
MAX6363LUT23-T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, smart meters, and critical µP systems requiring stable component supply with long-term lifecycle support.
Supply support for MAX6363LUT23-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 product line delivers integrated power-supply monitoring, battery switchover, and reset generation for µP-based systems operating in harsh or battery-dependent environments.
FAQ
What is the exact reset threshold voltage of the MAX6363LUT23-T?
The MAX6363LUT23-T has a factory-preset reset threshold of 2.32V, with ±15mV tolerance over temperature (−40°C to +85°C). This value is confirmed in the Ordering Information table and Electrical Characteristics section of the datasheet, where "UT23" suffix corresponds to 2.32V nominal threshold. The MAX6363LUT23-T does not support user adjustment of this threshold.
Does the MAX6363LUT23-T provide manual reset capability?
No, the MAX6363LUT23-T does not include manual reset functionality. Pin 3 (MR) is unconnected internally - unlike the MAX6361 variant, which integrates debounced MR input. The MAX6363LUT23-T is specifically configured for battery switchover and BATT ON indication only, with no internal logic tied to MR.
How does the BATT ON output behave in the MAX6363LUT23-T?
The BATT ON output on the MAX6363LUT23-T goes high only when the device is actively in battery-backup mode - i.e., when VCC is below the 2.32V reset threshold AND VBATT exceeds VCC by at least 20mV. As stated in the Pin Description and Table 1, BATT ON remains low during normal VCC operation and is ignored during reset assertion events.
What is the maximum load current supported by the OUT pin of the MAX6363LUT23-T?
The OUT pin of the MAX6363LUT23-T supports up to 150mA when sourced from VCC (at VCC ≥ 2.38V), and up to 10mA when sourced from BATT (at VBATT ≥ 2.25V). These values are specified in the Electrical Characteristics table under "VCC to OUT On-Resistance" and "Battery-Switchover Threshold" conditions, and reflect guaranteed performance across temperature.
Can the MAX6363LUT23-T operate with a 1.8V supply?
Yes, the MAX6363LUT23-T operates from +1.2V to +5.5V on either VCC or VBATT, so it fully supports 1.8V systems. Its RESET/RESET outputs remain valid down to 1.2V, and the 2.32V reset threshold ensures reliable detection of 1.8V rail collapse - confirmed in the "RESET/RESET Valid Down to 1.2V Guaranteed" feature list and Absolute Maximum Ratings.
MAX6363LUT23-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:
- 2.32V
- 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
MAX6363LUT23-T FAQ
1.How can I place an order for MAX6363LUT23-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363LUT23-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 MAX6363LUT23-T reliable?
The price and inventory of MAX6363LUT23-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363LUT23-T is usually 5 days.
3.What payment methods are accepted for MAX6363LUT23-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363LUT23-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363LUT23-T?
MAX6363LUT23-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363LUT23-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 MAX6363LUT23-T?
For technical support, including MAX6363LUT23-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363LUT23-T requirements.
6.How does Aetrix verify that MAX6363LUT23-T is sourced from the original manufacturer or authorized distributors?
All MAX6363LUT23-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 MAX6363LUT23-T meets industry standards.
7.What is the process for return or replacement of MAX6363LUT23-T?
All MAX6363LUT23-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363LUT23-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 MAX6363LUT23-T part is unused and in its original packaging.
Return procedure for MAX6363LUT23-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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