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Analog Devices Inc./Maxim Integrated MAX6363PUT29+T
- Part No.:
- MAX6363PUT29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363PUT29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,996
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Product details
Overview
MAX6363PUT29+T from Maxim Integrated is a SOT23-6, low-power microprocessor supervisory circuit with battery switchover and BATT ON indicator functionality. It operates from +1.2V supply, features factory-preset 2.93V reset threshold, 150ms minimum reset timeout, and guarantees RESET/RESET validity down to 1.2V. It is used in portable/battery-powered equipment to maintain SRAM backup during brownout.
For engineers reviewing the MAX6363PUT29+T datasheet, MAX6363PUT29+T pinout, MAX6363PUT29+T application, or MAX6363PUT29+T equivalent, key selection criteria include battery-on output signaling, 2.93V precision VCC monitoring, SOT23-6 footprint compatibility, and guaranteed 1.2V operation for ultra-low-voltage systems.
Technical Context
The MAX6363PUT29+T implements a dual-supply switchover architecture where OUT connects to VCC above reset threshold and automatically switches to BATT when VCC falls below 2.93V and VBATT exceeds VCC by ≥20mV. Its internal MOSFET enables battery backup with ≤1µA standby current at VBATT = 2.8V and VCC = 0.
BATT ON output asserts high exclusively in battery-backup mode (VCC < VTH and VCC < VBATT), providing unambiguous system-level status indication. Reset assertion is synchronized to VCC falling edge with 35ms typical propagation delay and immune to transients ≤30µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% - precisely monitors +3.0V or +3.3V rails without external resistors |
| Supply Voltage Range | +1.2V to +5.5V - supports single-cell Li+ and low-VDD µP systems |
| Reset Timeout Period | 150ms (min) - ensures reliable µP initialization after power recovery |
| Supply Current (VCC) | 11µA (typ) at 2.8V - enables multi-year battery life in always-on backup mode |
| BATT Standby Current | 0.02µA (typ) at +25°C - minimizes drain on backup battery during extended outages |
| VCC-to-OUT On-Resistance | 2.75Ω (max) at VCC = 2.38V - limits voltage drop under 25mA SRAM load |
| BATT-to-OUT On-Resistance | 4.6Ω (max) at VBATT = 2.25V - maintains stable backup rail for 5mA SRAM hold |
Pinout & Package
Package: 6-pin SOT23 (U6-1, outline 21-0058), RoHS-compliant lead-free, -40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Pulls low during VCC undervoltage, MR assertion, or watchdog timeout; requires external pull-up |
| 2: GND | Ground reference | Common return for VCC, BATT, and all internal circuitry; must be low-impedance |
| 3: MR | Manual reset input | Debounced logic input; low pulse ≥1µs asserts reset; internal 20kΩ pull-up to VCC |
| 4: VCC | Main supply input | Primary power source; reset asserted when VCC < 2.93V; powers internal circuitry and OUT |
| 5: OUT | Switchover output | Sources from VCC above threshold, from BATT below threshold; supplies SRAM or real-time clock |
| 6: BATT | Backup battery input | Connects to Li+ or coin cell; enables automatic switchover when VCC fails and VBATT > VCC +20mV |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output (BATT ON) | Dedicated high-assertion signal confirms active battery-backup mode-no software polling required |
| 20mV Switchover Hysteresis | Prevents oscillation during slow VCC decay; ensures clean transition between VCC and BATT sources |
| 1.2V Guaranteed Operation | Enables use with sub-1.8V µPs and energy-harvesting systems where supply may dip below 1.5V |
| 30µs Transient Immunity | Rejects short VCC glitches up to 100mV below threshold-eliminates spurious resets in noisy environments |
| 0.02µA Battery Standby | Extends 3V coin-cell life beyond 10 years in always-connected backup applications |
Applications
| Portable Medical Monitors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG waveform capture powered by primary DC supply with coin-cell backup during AC outage. IC Role / Device Role / Timing Role: MAX6363PUT29+T monitors main 3.3V rail and switches SRAM to battery when VCC drops below 2.93V; BATT ON signals MCU to enter low-power logging mode. Use Value: Preserves 72 hours of patient data without loss during 10-minute power interruption; BATT ON enables deterministic firmware response. | Use Scenario: Remote sensor node logging temperature/humidity every 5 seconds using 3.0V LDO and CR2032 backup. IC Role / Device Role / Timing Role: MAX6363PUT29+T provides 2.93V reset supervision and seamless VCC→BATT switchover; BATT ON triggers EEPROM write-lock to prevent corruption. Use Value: Guarantees data integrity across 5000+ power cycles; 0.02µA IBATT extends CR2032 life to >8 years in field deployment. |
| Point-of-Sale Terminals | Ruggedized Handheld Scanners |
Use Scenario: Battery-backed RAM retains transaction buffer and encryption keys during hot-swap of main Li-ion pack. IC Role / Device Role / Timing Role: MAX6363PUT29+T asserts BATT ON within 10µs of VCC collapse, enabling secure key re-encryption before backup activation. Use Value: Meets PCI-DSS requirement for zero-key-exposure during power transition; 150ms tRP prevents premature µP wake-up. | Use Scenario: Barcode scanner operating from 3.6V Li+ with 2.8V coin-cell fallback during deep discharge. IC Role / Device Role / Timing Role: MAX6363PUT29+T monitors 3.6V rail and activates BATT ON only when VCC < 2.93V and VBATT > VCC +20mV-avoiding false backup engagement. Use Value: Eliminates 99% of unnecessary battery swaps by preventing premature switchover during transient dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT29+T | Same 2.93V threshold and BATT ON function, but offered in leaded (not lead-free) SOT23-6 package | Not suitable for RoHS-compliant production; identical electrical behavior in non-RoHS assemblies | Select only if legacy leaded assembly process is mandated and RoHS exemption applies |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no BATT ON output, 350ms reset timeout, 2.5µA IQ | Lacks battery switchover and status indication; suited for simple reset-only applications without backup | Choose when BATT ON signaling is unnecessary and longer reset timeout improves system robustness |
Compared with MAX6363PUT29+T, MAX6363HUT29+T offers identical supervision functionality but requires leaded assembly, while TPS3808G33DBVR reduces quiescent current by 75% yet omits critical battery management features-making it unsuitable for SRAM retention designs.
Availability
MAX6363PUT29+T is available at Aetrix Electronics and suitable for portable medical monitors, industrial data loggers, point-of-sale terminals, and ruggedized handheld scanners requiring stable component supply across long product lifecycles.
Supply support for MAX6363PUT29+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 interface 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 low-quiescent-current operation in space-constrained SOT23 packages.
FAQ
What is the exact reset threshold voltage of the MAX6363PUT29+T?
The MAX6363PUT29+T has a factory-preset reset threshold of 2.93V, with ±1.5% tolerance over -40°C to +85°C. This value is laser-trimmed during production and specified in the Electrical Characteristics table under "MAX636_UT29" suffix. It is optimized for monitoring +3.0V and +3.3V power rails without external components.
Does the MAX6363PUT29+T provide a dedicated battery-status output?
Yes, the MAX6363PUT29+T includes a dedicated BATT ON output (Pin 3 in MAX6363 pinout) that goes high only when the device is actively supplying OUT from the BATT pin-i.e., when VCC < VTH and VBATT > VCC +20mV. This signal is electrically isolated from RESET and provides unambiguous hardware confirmation of battery-backup mode.
Can the MAX6363PUT29+T operate with a 1.2V supply?
Yes, the MAX6363PUT29+T guarantees full functionality-including RESET/RESET assertion, BATT ON output, and switchover control-down to VCC = +1.2V. Its BiCMOS process enables stable operation at this voltage, making it suitable for ultra-low-power systems such as energy-harvesting nodes and sub-1.8V microcontrollers.
What is the maximum load current supported by the OUT pin of the MAX6363PUT29+T?
The OUT pin of the MAX6363PUT29+T supports up to 150mA when sourcing from VCC (at VCC ≥ 4.75V), 65mA at VCC = 3.15V, and 25mA at VCC = 2.38V. When sourcing from BATT, it delivers up to 20mA at VBATT = 4.5V, 10mA at VBATT = 3.0V, and 5mA at VBATT = 2.25V-sufficient for SRAM hold and RTC backup.
How does the MAX6363PUT29+T handle VCC transients to avoid false resets?
The MAX6363PUT29+T incorporates built-in transient immunity: it ignores negative-going VCC glitches ≤30µs wide when the overdrive (VTH – VCC) is 100mV. This is achieved via internal filtering and hysteresis. Adding a 0.1µF ceramic capacitor close to the VCC pin further enhances immunity against high-frequency noise.
MAX6363PUT29+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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
MAX6363PUT29+T FAQ
1.How can I place an order for MAX6363PUT29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363PUT29+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 MAX6363PUT29+T reliable?
The price and inventory of MAX6363PUT29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363PUT29+T is usually 5 days.
3.What payment methods are accepted for MAX6363PUT29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363PUT29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363PUT29+T?
MAX6363PUT29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363PUT29+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 MAX6363PUT29+T?
For technical support, including MAX6363PUT29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363PUT29+T requirements.
6.How does Aetrix verify that MAX6363PUT29+T is sourced from the original manufacturer or authorized distributors?
All MAX6363PUT29+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 MAX6363PUT29+T meets industry standards.
7.What is the process for return or replacement of MAX6363PUT29+T?
All MAX6363PUT29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363PUT29+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 MAX6363PUT29+T part is unused and in its original packaging.
Return procedure for MAX6363PUT29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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