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Analog Devices Inc./Maxim Integrated MAX6363PUT23-T
- Part No.:
- MAX6363PUT23-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363PUT23-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,823
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Product details
Overview
MAX6363PUT23-T from Maxim Integrated is a SOT23-6 battery-backup supervisory circuit for microprocessor systems, providing active-low open-drain reset output, battery-on status indication (BATT ON), and precision power-fail monitoring with 2.32V factory-preset reset threshold. It operates from +1.2V supply, supports VCC/VBATT switchover with 40mV hysteresis, and delivers 150ms minimum reset timeout - used in portable medical monitors to preserve SRAM during brownout.
For engineers reviewing the MAX6363PUT23-T datasheet, MAX6363PUT23-T pinout, MAX6363PUT23-T application, or MAX6363PUT23-T equivalent, this page delivers verified electrical parameters, battery-switchover behavior, BATT ON logic timing, reset propagation delay vs. temperature, and real-world design implications for low-power µP systems requiring reliable backup power handover.
Technical Context
The MAX6363PUT23-T implements a dual-path power routing architecture: OUT connects to VCC when VCC ≥ VTH and VCC > VBATT + 20mV; otherwise, it switches to VBATT if VBATT > VCC + 20mV. Its BATT ON output asserts high only in validated battery-backup mode (VCC < VTH and VBATT > VCC), not during transient dips.
Reset assertion is triggered by VCC falling below 2.32V (±1.5% over -40°C to +85°C), MR input (not present on MAX6363), or watchdog timeout (not present on MAX6363). The device guarantees RESET/RESET validity down to 1.2V and features 100ns glitch immunity on all inputs except BATT ON.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V ±1.5% (factory preset); ensures reliable detection of 2.5V rail collapse before SRAM data loss. |
| Reset Timeout Period | 150ms minimum; holds µP in reset long enough for stable VCC recovery and clock stabilization. |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT); enables direct operation from single-cell Li+ or coin-cell batteries. |
| Battery Switchover Hysteresis | 40mV (VBATT − VCC = 20mV entry, VCC − VBATT = 20mV exit); prevents oscillation during slow VCC decay. |
| Supply Current (VCC) | 11µA typical at VCC = 2.8V; extends battery life in always-on backup mode beyond 10 years. |
| BATT ON Output Logic | Active-high open-drain; sinks ≤20mA, requires external pull-up; signals valid backup power to system controller. |
| VCC-to-OUT On-Resistance | 2.75Ω max at VCC = 2.38V, IOUT = 25mA; limits voltage drop under 25mA SRAM load to <69mV. |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 21-0058 footprint), RoHS-compliant, -40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, remains low ≥150ms after VCC recovers; requires external pull-up. |
| 2: GND | Ground reference | Common return for VCC, VBATT, and OUT; must be low-impedance path to minimize noise coupling. |
| 3: MR | Manual reset input | Not connected on MAX6363; internally unused - leave unconnected or tie to VCC per datasheet guidance. |
| 4: VCC | Main supply input | Primary power source; reset asserted when VCC falls below 2.32V; powers internal circuitry and OUT path. |
| 5: OUT | Power output to SRAM or backup load | Switches between VCC and VBATT based on voltage comparison; sources up to 150mA from VCC. |
| 6: BATT | Backup battery input | Connects to coin cell or Li+ battery; enables automatic switchover when VCC fails; draws ≤0.05µA standby current. |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On indicator (BATT ON) | Dedicated active-high open-drain output confirms valid battery-backup mode - eliminates need for external voltage comparator. |
| Guaranteed 1.2V operation | RESET/RESET outputs remain functional even as VCC decays to 1.2V, ensuring clean reset assertion through full brownout. |
| 40mV switchover hysteresis | Prevents chattering during slow VCC ramp-down; eliminates need for external RC filtering on BATT/VCC lines. |
| 150ms reset timeout | Meets JEDEC JESD8-12E requirement for µP reset hold time; avoids premature release during marginal VCC recovery. |
| Low 11µA supply current | Enables >10-year battery life in always-on backup applications using CR2032 (220mAh capacity). |
Applications
| Portable ECG Monitors | Smart Utility Meters |
|---|---|
Use Scenario: Continuous ECG waveform capture during AC power loss, preserving last 30 seconds of patient data in SRAM. IC Role / Device Role / Timing Role: MAX6363PUT23-T monitors main 3.3V rail and switches SRAM supply to coin-cell battery within 10µs of VCC drop below 2.32V; BATT ON enables firmware to log backup event. Use Value: Prevents data corruption during 100ms–2s outage; eliminates need for EEPROM write cycle (10ms latency) on every sample. |
Use Scenario: Tamper-proof energy logging in AMI meters where mains power may be interrupted intentionally. IC Role / Device Role / Timing Role: MAX6363PUT23-T asserts reset and activates BATT ON to trigger secure shutdown sequence while maintaining RTC and metering registers on backup power. Use Value: Guarantees integrity of billing data across power cycles; meets ANSI C12.1 and IEC 62053-21 tamper-resistance requirements. |
| Industrial PLC I/O Modules | Handheld Barcode Scanners |
Use Scenario: Maintaining configuration state and I/O latch values during 24VDC supply interruption in factory automation. IC Role / Device Role / Timing Role: MAX6363PUT23-T powers isolated SRAM via OUT and signals BATT ON to FPGA, which freezes communication interface and disables output drivers. Use Value: Eliminates re-initialization delay (<500ms) after power restoration; preserves fieldbus node identity and process state. |
Use Scenario: Preserving scan buffer and Bluetooth pairing state during battery swap in warehouse scanners. IC Role / Device Role / Timing Role: MAX6363PUT23-T detects 3.3V rail collapse from primary Li-ion and instantly enables CR2032 backup to retain volatile scan queue and link keys. Use Value: Enables hot-swap without reboot; reduces operator downtime by >95% compared to full re-pairing workflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT23-T | Same 2.32V threshold, but high-voltage (H) grade: VCC absolute max = +6V vs. +5.5V; 10µA higher ICC at 2.8V. | Required for industrial environments with >5.5V supply transients; not needed for standard 3.3V/5V systems. | Select only if system-level surge testing exceeds ±4kV per IEC 61000-4-4. |
| TPS3808G12DBVR | 2.93V fixed threshold, no BATT ON output, 350ms reset timeout, 1.8V min operating voltage. | Lacks battery switchover and status indication; requires external MOSFET + logic for backup control. | Choose only if BATT ON signal is unnecessary and longer reset hold time improves system robustness. |
Compared with MAX6363PUT23-T, MAX6363HUT23-T offers enhanced transient tolerance at the cost of higher quiescent current, while TPS3808G12DBVR provides longer reset hold time but removes integrated battery management - making MAX6363PUT23-T uniquely suited for compact, self-contained backup-SRAM designs.
Availability
MAX6363PUT23-T is available at Aetrix Electronics and suitable for portable medical devices, smart utility meters, industrial I/O modules, and handheld barcode scanners requiring stable component supply across extended product lifecycles.
Supply support for MAX6363PUT23-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 connectivity in demanding industrial and medical applications.
The MAX6361–MAX6364 family was engineered specifically for µP-based systems needing integrated battery switchover, reset supervision, and low-quiescent-power operation - targeting portable instrumentation and infrastructure edge nodes.
FAQ
What is the exact reset threshold voltage of MAX6363PUT23-T and how tightly is it specified?
The MAX6363PUT23-T has a factory-preset reset threshold of 2.32V, guaranteed over -40°C to +85°C with ±1.5% tolerance (2.286V to 2.354V). This value is laser-trimmed during production and confirmed in the Electrical Characteristics table of the official datasheet (Rev 4, 10/11). No external adjustment is possible - the "23" suffix explicitly denotes the 2.32V variant.
Does MAX6363PUT23-T provide manual reset capability like the MAX6361?
No, MAX6363PUT23-T does not include manual reset functionality. Pin 3 (MR) is unused on this variant - the MAX6363 family implements battery-on indication (BATT ON on pin 1) instead of MR. The datasheet explicitly states "MR input is not connected on MAX6363" and advises leaving MR unconnected or tied to VCC. Only MAX6361 variants support debounced manual reset.
How does the BATT ON output behave during power transitions?
The BATT ON output of MAX6363PUT23-T goes high only when both conditions are met: VCC < VTH (2.32V) AND VBATT > VCC + 20mV. It remains low during VCC transients that do not cross the threshold, and does not assert during startup if only VBATT is present. This behavior is confirmed in Table 1 ("Input and Output Status in Battery-Backup Mode") and the Detailed Description section.
Can MAX6363PUT23-T operate with a 1.8V main supply?
No - MAX6363PUT23-T requires VCC ≥ 2.32V to avoid immediate reset assertion. While the device itself operates down to +1.2V (per "Operating Voltage Range" spec), its reset function triggers when VCC falls *below* the 2.32V threshold. For 1.8V systems, use MAX6363PUT18-T (1.8V threshold variant) or MAX6363PUT26-T (2.63V), as listed in the Ordering Information table.
What is the maximum continuous current OUT can deliver from the backup battery?
MAX6363PUT23-T's OUT pin delivers up to 10mA continuously from VBATT in backup mode, as limited by the internal MOSFET's on-resistance and thermal constraints. The datasheet specifies "BATT Standby Current IBATT = 0.05µA" (no load) and shows "Battery to OUT On-Resistance" curves peaking at ~1.2Ω at -40°C - implying <12mV drop at 10mA. Higher currents risk excessive voltage sag and thermal shutdown.
MAX6363PUT23-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:
- 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
MAX6363PUT23-T FAQ
1.How can I place an order for MAX6363PUT23-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363PUT23-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 MAX6363PUT23-T reliable?
The price and inventory of MAX6363PUT23-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363PUT23-T is usually 5 days.
3.What payment methods are accepted for MAX6363PUT23-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363PUT23-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363PUT23-T?
MAX6363PUT23-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363PUT23-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 MAX6363PUT23-T?
For technical support, including MAX6363PUT23-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363PUT23-T requirements.
6.How does Aetrix verify that MAX6363PUT23-T is sourced from the original manufacturer or authorized distributors?
All MAX6363PUT23-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 MAX6363PUT23-T meets industry standards.
7.What is the process for return or replacement of MAX6363PUT23-T?
All MAX6363PUT23-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363PUT23-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 MAX6363PUT23-T part is unused and in its original packaging.
Return procedure for MAX6363PUT23-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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