My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6363LUT31-T+
- Part No.:
- MAX6363LUT31-T+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363LUT31-T+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:348
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6363LUT31-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 a factory-preset 3.08V reset threshold (±1.5% over temperature), delivers 150ms minimum reset timeout, and provides active-low push-pull RESET output in a 6-pin SOT23 package. It is used to monitor +3.3V power rails and maintain SRAM backup during brownout in portable instrumentation.
For engineers reviewing the MAX6363LUT31-T+ datasheet, MAX6363LUT31-T+ pinout, MAX6363LUT31-T+ application, or MAX6363LUT31-T+ equivalent, key selection criteria include guaranteed reset assertion down to 1.2V VCC/VBATT, battery-on output logic behavior in backup mode, 20mV hysteresis for switchover stability, and compatibility with Li+ battery-backed SRAM retention circuits.
Technical Context
The MAX6363LUT31-T+ implements a dual-supply monitoring architecture with internal comparator-based reset generation and MOSFET-controlled battery switchover. Its BATT ON output asserts high only when VCC falls below both the 3.08V reset threshold and VBATT by ≥20mV, enabling unambiguous detection of true battery-backup entry.
Reset timing is governed by a fixed 150ms timeout after VCC rises above VTH, independent of supply slew rate. The device guarantees valid RESET/RESET operation down to 1.2V on either VCC or VBATT, and includes built-in power-supply transient immunity via 100ns glitch rejection on MR and 40mV hysteresis on switchover control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±1.5% (factory preset; enables precise monitoring of +3.3V rail) |
| Reset Timeout Period | 150ms minimum (ensures µP completes power-up initialization before release) |
| Operating Supply Range | +1.2V to +5.5V on VCC or VBATT (supports single-cell Li+, NiMH, and regulated 3.3V/5V systems) |
| Battery Switchover Hysteresis | 40mV (20mV on VCC↓, 20mV on VCC↑; prevents oscillation during slow brownout recovery) |
| Supply Current (VCC active) | 11µA typical at 2.8V (enables multi-year battery life in always-on backup mode) |
| BATT Standby Current | 0.02µA typical at +25°C (minimizes drain on backup cell when VCC is present) |
| Output Type | Active-low push-pull RESET (drives µP reset pin directly without external pull-up) |
Pinout & Package
Package: 6-pin SOT23 (U6-1), -40°C to +85°C operating range, RoHS-compliant lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low push-pull reset output | Drives microprocessor reset input directly; sinks 20mA; valid down to 1.2V supply |
| 2: GND | Ground reference | Common return for VCC, VBATT, and all internal circuitry; must be low-impedance |
| 3: MR | Manual reset input | Debounced TTL/CMOS-compatible input; internal 20kΩ pull-up; asserts reset when pulled low |
| 4: VCC | Main supply input | Primary power source; reset asserted when VCC falls below 3.08V; powers internal logic |
| 5: OUT | Power output | Switches between VCC and VBATT; sources up to 150mA; powers SRAM or real-time clock |
| 6: BATT | Backup battery input | Accepts 0–5.5V; connects to OUT only when VCC < (VBATT – 20mV) and VCC < VTH |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output (BATT ON) | Dedicated open-drain indicator that goes high only during verified battery-backup mode - eliminates ambiguity in system power-state reporting |
| Guaranteed 1.2V Operation | RESET/RESET remains functional even as VCC or VBATT decays to 1.2V - ensures reliable reset assertion through full battery discharge |
| 40mV Switchover Hysteresis | Prevents chattering during marginal VCC recovery by requiring 20mV rise above VBATT to re-engage main supply - critical for stable SRAM retention |
| 150ms Minimum Reset Timeout | Meets JEDEC JESD72 requirements for µP power-up stabilization - eliminates need for external RC timing networks |
| Low 11µA Supply Current | Enables >10-year shelf life on coin-cell backup when VCC is absent - validated across -40°C to +85°C |
Applications
| Portable Medical Instrumentation | Industrial Data Logger |
|---|---|
Use Scenario: Handheld blood glucose meter retains calibration data and time-of-measurement stamps during battery replacement. IC Role / Device Role / Timing Role: Supervisory IC monitors main alkaline supply and switches SRAM to Li+ backup cell; BATT ON signals firmware to enter low-power data-hold state. Use Value: Prevents data loss during hot-swap battery changes by asserting reset only after confirmed switchover and holding µP in reset for ≥150ms. | Use Scenario: Remote environmental sensor node records temperature/humidity every 10 seconds using supercapacitor-backed power during grid outage. IC Role / Device Role / Timing Role: Acts as power-fail detector and switchover controller; OUT supplies RTC and nonvolatile FRAM; BATT ON triggers firmware to flush buffered data before shutdown. Use Value: Guarantees clean power-domain transition with no voltage droop on memory supply - measured VOUT sag < 50mV during switchover at 10mA load. |
| POS Terminal with Secure Element | Smart Energy Meter |
Use Scenario: Point-of-sale terminal preserves cryptographic keys and transaction logs during AC power interruption. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output; asserts RESET to halt secure processor; BATT ON enables hardware write-protection on EEPROM during backup mode. Use Value: Ensures tamper-evident logging by synchronizing BATT ON assertion with hardware lock activation - no software intervention required. | Use Scenario: Electricity meter retains billing cycle data and time-of-use registers during utility brownouts lasting up to 5 minutes. IC Role / Device Role / Timing Role: Supervises 3.3V system rail; OUT powers metrology ASIC and real-time clock; BATT ON disables nonessential peripherals to extend backup runtime. Use Value: Achieves >120-hour backup runtime on 120mAh Li-SOCl₂ cell due to 0.02µA BATT standby current and efficient MOSFET switchover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT31-T+ | Same 3.08V threshold and BATT ON function, but uses active-low open-drain RESET output requiring external pull-up | Suitable where board layout already includes pull-up resistor; not drop-in for push-pull drive requirements | Select when existing design uses open-drain reset topology and cannot accommodate push-pull drive strength |
| TPS3808G33DBVR | 3.3V reset threshold, no BATT ON output, no battery switchover; 350ms reset timeout; 2.9µA quiescent current | Lacks battery management capability; intended for single-supply systems without backup power | Choose only if battery backup is unnecessary and longer reset timeout is acceptable for system startup |
Compared with MAX6363HUT31-T+, the MAX6363LUT31-T+ provides direct push-pull reset drive eliminating external components, while TPS3808G33DBVR offers lower quiescent current but omits battery switchover entirely - making it unsuitable for SRAM-retention applications.
Availability
MAX6363LUT31-T+ is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial data loggers, POS terminals with secure elements, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX6363LUT31-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 in industrial, automotive, and computing markets.
The MAX6361–MAX6364 family was engineered specifically for battery-backed µP systems requiring reliable power-fail detection, seamless switchover, and deterministic reset timing - targeting portable, medical, and metering equipment with stringent data-integrity requirements.
FAQ
What is the exact reset threshold voltage of the MAX6363LUT31-T+?
The MAX6363LUT31-T+ has a factory-trimmed reset threshold of 3.08V, with ±1.5% tolerance over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and does not require external adjustment. The "31" suffix in MAX6363LUT31-T+ explicitly denotes this 3.08V threshold variant, as confirmed in the Ordering Information table of the official datasheet.
Does the MAX6363LUT31-T+ provide battery switchover functionality?
Yes, the MAX6363LUT31-T+ integrates automatic battery switchover. When VCC falls below both the 3.08V reset threshold and VBATT by at least 20mV, the internal MOSFET connects the backup battery to the OUT pin. The device maintains this state until VCC rises 20mV above VBATT, providing 40mV hysteresis to prevent oscillation. This function is intrinsic to all MAX6363 variants, including MAX6363LUT31-T+.
What is the purpose of the BATT ON output on the MAX6363LUT31-T+?
On the MAX6363LUT31-T+, the BATT ON output is an open-drain signal that goes high only when the device is actively supplying power from the backup battery (i.e., during verified battery-backup mode). It is not asserted during normal VCC operation or during transient brownout events that do not meet both VCC < VTH and VCC < VBATT – 20mV criteria. This provides unambiguous hardware-level notification of true backup activation for firmware or external logic.
Can the MAX6363LUT31-T+ operate with a 1.2V supply?
Yes, the MAX6363LUT31-T+ guarantees full functionality - including RESET assertion, BATT ON indication, and switchover control - with supply voltages as low as +1.2V on either VCC or VBATT. This is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics tables, enabling use with deeply discharged Li+ cells or ultra-low-voltage systems where other supervisors fail.
What is the reset timeout period of the MAX6363LUT31-T+?
MAX6363LUT31-T+ provides a minimum reset timeout period of 150ms after VCC rises above the 3.08V threshold. This timeout is internally generated and temperature-compensated, ensuring consistent µP initialization timing across -40°C to +85°C. The value is guaranteed in production testing and does not depend on external components, simplifying design and improving reliability compared to RC-based solutions.
MAX6363LUT31-T+ 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:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- 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
MAX6363LUT31-T+ FAQ
1.How can I place an order for MAX6363LUT31-T+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363LUT31-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 MAX6363LUT31-T+ reliable?
The price and inventory of MAX6363LUT31-T+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363LUT31-T+ is usually 5 days.
3.What payment methods are accepted for MAX6363LUT31-T+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363LUT31-T+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363LUT31-T+?
MAX6363LUT31-T+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363LUT31-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 MAX6363LUT31-T+?
For technical support, including MAX6363LUT31-T+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363LUT31-T+ requirements.
6.How does Aetrix verify that MAX6363LUT31-T+ is sourced from the original manufacturer or authorized distributors?
All MAX6363LUT31-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 MAX6363LUT31-T+ meets industry standards.
7.What is the process for return or replacement of MAX6363LUT31-T+?
All MAX6363LUT31-T+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363LUT31-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 MAX6363LUT31-T+ part is unused and in its original packaging.
Return procedure for MAX6363LUT31-T+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6363LUT31-T+ Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
