My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6363PUT31-T
- Part No.:
- MAX6363PUT31-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363PUT31-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,470
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6363PUT31-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 factory-preset 3.08V reset threshold, 150ms minimum reset timeout, active-low open-drain RESET output, and dedicated BATT ON output that goes high during battery-backup mode. It is used in portable/battery-powered equipment to maintain SRAM data integrity during power failure.
For engineers reviewing the MAX6363PUT31-T datasheet, MAX6363PUT31-T pinout, MAX6363PUT31-T application, or MAX6363PUT31-T equivalent, key selection criteria include guaranteed reset assertion down to 1.2V, 40mV hysteresis for VCC–VBATT switchover, battery-on indicator functionality, and SOT23-6 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6363PUT31-T implements a precision voltage monitor with fixed 3.08V reset threshold (±1.5% over temperature), automatic backup-battery switchover when VCC falls below VBATT by ≥20mV, and internal MOSFET control of OUT sourcing from either VCC or BATT. Its BATT ON output provides unambiguous logic-high indication only when the device is actively supplying OUT from the backup battery.
It guarantees RESET assertion during VCC brownout, manual reset (not applicable-MAX6363 lacks MR), watchdog timeout (not applicable-MAX6363 lacks WDI), or auxiliary reset input (not applicable-MAX6363 lacks RESET IN). Reset remains active for ≥150ms after VCC recovers above threshold, ensuring reliable µP initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±1.5% - ensures reliable detection of 3.3V supply undervoltage before system instability occurs |
| Reset Timeout Period | 150ms minimum - guarantees sufficient hold time for microprocessor power-up sequencing |
| Operating Supply Voltage | +1.2V to +5.5V - supports direct connection to low-voltage logic rails and battery-backed operation |
| Battery Switchover Hysteresis | 40mV (20mV drop-in, 20mV rise-out) - prevents oscillation during slow VCC decay/recovery near VBATT |
| Supply Current (VCC) | 11µA typical at 2.8V - enables multi-year operation on coin-cell batteries in standby |
| BATT Standby Current | 0.02µA typical - minimizes drain on backup battery when VCC is present |
| Output Drive | Active-low open-drain RESET - allows wired-OR configuration and level-shifting with external pull-up |
Pinout & Package
Package: 6-pin SOT23 (U6-1), -40°C to +85°C operating temperature range, RoHS-compliant lead-free construction (indicated by "-T" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, brownout, or power failure; requires external pull-up for logic-level compatibility |
| 2: GND | Ground reference | Common return path for VCC, BATT, and all internal circuitry; must be low-impedance for noise immunity |
| 3: VCC | Main supply input | Primary power source; reset asserted when voltage falls below 3.08V; powers internal circuitry and OUT during normal operation |
| 4: BATT | Backup battery input | Secondary power source; automatically selected for OUT when VCC drops below VBATT −20mV |
| 5: OUT | Power output | Supplies SRAM or other critical circuitry; sourced from VCC if VCC > VBATT, otherwise from greater of VCC or BATT |
| 6: BATT ON | Battery-active status indicator | Logic-high output only during battery-backup mode; used to enable/disable peripheral circuits or trigger firmware alerts |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Dedicated BATT ON pin provides unambiguous, glitch-free logic-high signal exclusively during battery-backup operation |
| Guaranteed 1.2V Operation | RESET and BATT ON remain functional even as VCC decays to 1.2V, enabling full supervision through deep brownout |
| Precision Reset Threshold | 3.08V ±1.5% over -40°C to +85°C ensures accurate monitoring of 3.3V systems without external calibration |
| Low Quiescent Current | 11µA typical VCC supply current extends battery life in always-on portable applications |
| Robust Power-Transient Immunity | Withstands VCC transients up to 30µs duration when 100mV below threshold, reducing false resets in noisy environments |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG monitoring unit powered by rechargeable Li-ion with SRAM-based waveform buffer. IC Role / Device Role / Timing Role: Supervisory circuit monitors main 3.3V rail and switches SRAM power to backup battery during AC loss or deep discharge. Use Value: BATT ON output disables non-critical subsystems while preserving memory contents for post-event analysis. | Use Scenario: Remote environmental sensor node logging temperature/humidity to SRAM before periodic RF upload. IC Role / Device Role / Timing Role: Ensures clean µP reset and uninterrupted SRAM power during solar-charger interruptions or battery voltage sag. Use Value: 150ms reset timeout and 3.08V threshold align precisely with 3.3V LDO dropout behavior, preventing partial execution. |
| POS Terminals | Smart Meters |
Use Scenario: Battery-backed point-of-sale terminal retaining transaction buffer during mains outage. IC Role / Device Role / Timing Role: Provides fail-safe power switchover and asserts reset to halt processor until stable power resumes. Use Value: BATT ON signal triggers secure shutdown sequence and disables display backlight to conserve backup energy. | Use Scenario: Electricity meter with tamper-detection SRAM storing billing data and event logs. IC Role / Device Role / Timing Role: Monitors 3.3V supply derived from metering ASIC; maintains SRAM integrity during grid fluctuations. Use Value: 40mV switchover hysteresis eliminates chatter during slow AC recovery, ensuring single, clean battery engagement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT31-T | Same 3.08V threshold, identical pinout and function, but offered in higher-temperature grade (-40°C to +125°C) | Required for under-hood automotive or industrial enclosures exceeding +85°C ambient | Select when extended temperature operation is mandatory; otherwise electrically interchangeable |
| TPS3808G30DBVR | 3.0V reset threshold, 350ms timeout, push-pull RESET output, no BATT ON pin, 1.8V min supply | Lacks battery switchover and status indication; suited for simple reset-only applications without backup power | Choose only if BATT ON functionality is unnecessary and longer reset timeout is acceptable |
Compared with MAX6363PUT31-T, MAX6363HUT31-T offers identical supervision and battery-handling capability with extended thermal range, while TPS3808G30DBVR provides basic reset functionality without battery management-making it unsuitable for SRAM retention use cases requiring BATT ON signaling and seamless power-source handover.
Availability
MAX6363PUT31-T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, and smart meters requiring stable component supply and long-term manufacturability.
Supply support for MAX6363PUT31-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) is a semiconductor company specializing in analog, mixed-signal, and high-reliability ICs for industrial, communications, and computing markets.
The MAX6361–MAX6364 product line delivers integrated power-supply monitoring and battery switchover for µP systems, designed specifically to replace discrete reset + battery-control solutions in space- and power-constrained portable and industrial equipment.
FAQ
What is the exact reset threshold voltage of the MAX6363PUT31-T?
The MAX6363PUT31-T has a factory-preset reset threshold of 3.08V, with guaranteed tolerance of ±1.5% across the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and does not require external adjustment. The "31" suffix in MAX6363PUT31-T explicitly denotes the 3.08V threshold variant per Maxim's ordering guide.
Does the MAX6363PUT31-T provide manual reset or watchdog functionality?
No, the MAX6363PUT31-T does not include manual reset (MR) or watchdog timer (WDI) inputs. It belongs to the MAX6363 variant family, which is defined solely by its battery-on (BATT ON) output functionality. Manual reset is exclusive to MAX6361, watchdog to MAX6362, and adjustable reset input to MAX6364-these functions are not shared across variants.
How does the BATT ON output behave in the MAX6363PUT31-T?
The BATT ON output of the MAX6363PUT31-T goes high only when the device is actively sourcing OUT from the backup battery-i.e., when VCC is below the reset threshold and VCC is at least 20mV lower than VBATT. It remains low during normal VCC-powered operation and during power-up when only VCC is present. This provides unambiguous status signaling for firmware or power-management logic.
Can the MAX6363PUT31-T operate with a 1.8V supply?
Yes, the MAX6363PUT31-T operates from +1.2V to +5.5V on both VCC and VBATT inputs. At 1.8V supply, it continues to monitor for drops below its 3.08V threshold and assert RESET accordingly-but note that 1.8V is below the threshold, so RESET will remain continuously asserted unless VCC rises above 3.08V. Its 1.2V minimum supply enables operation during deep brownout recovery phases.
What is the maximum load current supported by the OUT pin of the MAX6363PUT31-T?
The OUT pin of the MAX6363PUT31-T supports up to 150mA when sourced from VCC (at VCC = 4.75V), 65mA at 3.15V, and 25mA at 2.38V. When sourced from VBATT, output current is limited by battery voltage and internal MOSFET on-resistance (e.g., ~2.0Ω at VBATT = 2.8V, 25mA). Exceeding these limits risks excessive voltage drop or thermal stress.
MAX6363PUT31-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:
- 3.08V
- Output:
- Open Drain or Open Collector
- 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
MAX6363PUT31-T FAQ
1.How can I place an order for MAX6363PUT31-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363PUT31-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 MAX6363PUT31-T reliable?
The price and inventory of MAX6363PUT31-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363PUT31-T is usually 5 days.
3.What payment methods are accepted for MAX6363PUT31-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363PUT31-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363PUT31-T?
MAX6363PUT31-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363PUT31-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 MAX6363PUT31-T?
For technical support, including MAX6363PUT31-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363PUT31-T requirements.
6.How does Aetrix verify that MAX6363PUT31-T is sourced from the original manufacturer or authorized distributors?
All MAX6363PUT31-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 MAX6363PUT31-T meets industry standards.
7.What is the process for return or replacement of MAX6363PUT31-T?
All MAX6363PUT31-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363PUT31-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 MAX6363PUT31-T part is unused and in its original packaging.
Return procedure for MAX6363PUT31-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6363PUT31-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…
