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Analog Devices Inc./Maxim Integrated MAX6363PUT26
- Part No.:
- MAX6363PUT26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363PUT26.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,121
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Product details
Overview
MAX6363PUT26 from Maxim Integrated is a low-power microprocessor supervisory circuit with battery switchover functionality, designed for power-fail detection and SRAM backup control in embedded systems. It features a factory-preset 2.63V reset threshold, active-low push-pull RESET output, and dedicated BATT ON indicator output. Operates down to +1.2V supply voltage and supports VCC-to-OUT switching with ≤2.38V turn-on threshold for reliable brownout response in portable instrumentation.
For engineers reviewing the MAX6363PUT26 datasheet, MAX6363PUT26 pinout, MAX6363PUT26 application, or MAX6363PUT26 equivalent, this device is selected for precision low-voltage reset supervision, battery-backup mode indication, and ultra-low quiescent current (≤15µA at +25°C) in space-constrained industrial controllers and POS terminals.
Technical Context
The MAX6363PUT26 implements a dual-path power-switching architecture: when VCC ≥ VTH (2.63V), OUT is sourced from VCC; when VCC falls below VTH and VBATT > VCC + 20mV, an internal MOSFET connects BATT to OUT. Its BATT ON output transitions high only during validated battery-backup mode - not merely on low VCC - ensuring unambiguous system state signaling.
Reset assertion is triggered by VCC falling below 2.63V (±15mV over temperature), with guaranteed 150ms minimum timeout after VCC recovery. The RESET output remains asserted during manual reset conditions only in MAX6361 variants; MAX6363PUT26 ignores MR input, confirming its fixed role as battery-monitoring supervisor without manual reset capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±15mV (factory-trimmed; enables precise 2.5V system brownout detection) |
| Supply Voltage Range | +1.2V to +5.5V (supports single-cell Li-ion, 3.3V, and 5V rails without external regulators) |
| Reset Timeout Period | 150ms minimum (ensures µP completes full initialization before release) |
| Quiescent Current | 11µA typical at VCC = 2.8V (extends battery life in always-on backup mode) |
| Battery Standby Current | 0.02µA max at TA = -40°C to +85°C (negligible drain on backup cell during long-term storage) |
| VCC-to-OUT On-Resistance | 2.38Ω typical at VCC = 2.3V, IOUT = 25mA (minimizes voltage drop feeding SRAM during brownout) |
| Operating Temperature | -40°C to +85°C (qualified for industrial-grade embedded deployment) |
Pinout & Package
MAX6363PUT26 is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Common return path for all internal circuits and output loads; must be low-impedance connection to system ground plane |
| VCC | Main supply input | Primary power source; powers internal logic and drives OUT when above reset threshold |
| BATT | Backup battery input | Connects to lithium coin cell or rechargeable battery; activates OUT sourcing only when VCC < VTH and VBATT > VCC + 20mV |
| OUT | Power output | Switched output sourcing from VCC or BATT; delivers up to 150mA to SRAM or real-time clock circuitry |
| BATT ON | Battery-active indicator | Open-drain output pulled high externally; signals valid battery-backup mode (not just low VCC) |
| RESET | Active-low reset signal | Push-pull output asserted low during VCC undervoltage; meets TTL/CMOS input thresholds for direct µP reset pin drive |
Key Features
| Feature | Design Value |
|---|---|
| Battery switchover hysteresis | 40mV (20mV rise + 20mV fall) prevents oscillation during slow VCC decay near threshold) |
| Reset propagation delay | ≤2.5µs (VCC falling at 10V/ms) ensures rapid fault response without µP instruction corruption |
| Transient immunity | Withstands 100mV VCC glitches up to 30µs duration (enables operation in electrically noisy environments) |
| Output short-circuit protection | Self-limiting for up to 10 seconds (prevents latch-up or thermal damage during SRAM bus contention) |
| Reset output drive strength | 20mA sink/source capability (directly drives reset inputs of most µPs without external buffer) |
Applications
| Industrial Controllers | POS Terminals |
|---|---|
Use Scenario: Maintaining SRAM contents during AC mains interruption in programmable logic controllers. IC Role / Device Role / Timing Role: Supervisory circuit providing VCC monitoring, battery-backed power switchover, and BATT ON status flag for firmware-level power-state management. Use Value: Guarantees zero-data-loss memory retention for up to 72 hours on CR2032 coin cell due to 0.02µA battery standby current. |
Use Scenario: Preserving transaction logs and configuration data during sudden power loss in retail point-of-sale systems. IC Role / Device Role / Timing Role: Reset generator and backup power controller that asserts RESET before VCC drops below 2.63V and switches SRAM to battery within 150ns. Use Value: Eliminates need for external diode-OR circuitry while delivering 2.38Ω low-resistance battery path for stable 2.5V SRAM operation. |
| Portable Medical Instruments | Smart Meters |
Use Scenario: Securing calibration data and patient history during battery replacement in handheld diagnostic devices. IC Role / Device Role / Timing Role: Battery switchover supervisor with BATT ON output enabling firmware to disable non-essential peripherals before backup activation. Use Value: Enables hot-swap battery operation without system reset via 40mV hysteresis and glitch-immune 150ms timeout. |
Use Scenario: Retaining time-of-use billing records and tamper logs during grid outages in electricity meters. IC Role / Device Role / Timing Role: Precision voltage monitor triggering controlled shutdown and SRAM backup when 3.3V rail decays below 2.63V threshold. Use Value: Meets IEC 62053-21 requirements for 10-year data retention using ultra-low 11µA operating current at 2.8V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT26 | Same 2.63V threshold and BATT ON function, but in SOT23-6 tape-and-reel with different top marking (AAGU vs AAGT); identical electrical specs | No functional difference; intended for factory-automated assembly requiring specific reel packaging | Select MAX6363HUT26 only when procurement requires Maxim's standard tape-and-reel format with AAGU marking |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no battery switchover or BATT ON output; 1.8V min supply; 2.5µA IQ | Lacks backup power management - suitable only for simple reset-only applications without SRAM retention needs | Choose TPS3808G33DBVR only if system uses dedicated battery charger IC and requires lower IQ than MAX6363PUT26 |
Compared with MAX6363HUT26, the MAX6363PUT26 offers identical supervision performance but differs in packaging format and marking; versus TPS3808G33DBVR, it provides integrated battery switchover and status signaling essential for data-retentive designs, at the cost of higher supply voltage minimum.
Availability
MAX6363PUT26 is available at Aetrix Electronics and suitable for industrial controllers, POS terminals, and portable medical instruments requiring stable component supply across extended product lifecycles.
Supply support for MAX6363PUT26 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 and mixed-signal ICs for power management, sensing, and interface applications.
The MAX6363PUT26 belongs to Maxim's µP supervisory circuit family, engineered specifically for reliable power-fail detection and seamless battery-backed memory retention in space- and power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6363PUT26?
The MAX6363PUT26 has a factory-trimmed reset threshold of 2.63V, with ±15mV tolerance over the full -40°C to +85°C temperature range. This value is confirmed in Table 1 of the datasheet under suffix "26", and is measured at the VCC pin during falling-edge detection with guaranteed 150ms timeout after VCC recovers above threshold. The MAX6363PUT26 does not support user adjustment of this threshold.
Does the MAX6363PUT26 provide manual reset capability via the MR pin?
No, the MAX6363PUT26 does not support manual reset. The MR pin is not functional in MAX6363 variants - only MAX6361 devices include debounced manual reset input. In MAX6363PUT26, the MR pin (Pin 3) is internally disconnected and must be left floating or tied to VCC; asserting low on this pin has no effect on RESET output behavior.
How does the BATT ON output behave during power transitions?
The BATT ON output of the MAX6363PUT26 goes high only when both conditions are met: VCC is below the 2.63V reset threshold AND VBATT exceeds VCC by at least 20mV. It remains high until VCC rises above VBATT by 20mV, providing 40mV hysteresis. This ensures BATT ON reflects true battery-backup mode, not transient low-VCC events. The MAX6363PUT26 BATT ON is open-drain and requires external pull-up.
What is the maximum load current supported by the OUT pin of the MAX6363PUT26?
The OUT pin of the MAX6363PUT26 delivers up to 150mA when sourced from VCC (at VCC ≥ 4.75V), 65mA at VCC = 3.15V, and 25mA at VCC = 2.38V. When sourced from battery, output current is limited by BATT-to-OUT on-resistance (≤2.38Ω at VBATT = 2.25V), supporting ~10mA continuous into 2.5V SRAM with <100mV dropout. The MAX6363PUT26 includes short-circuit protection for up to 10 seconds.
Can the MAX6363PUT26 operate with a 1.8V main supply?
Yes, the MAX6363PUT26 operates with VCC as low as +1.2V, making it fully compatible with 1.8V systems. At VCC = 1.8V, RESET remains valid (VOL ≤ 0.4V, VOH ≥ 0.8·VCC), and the 2.63V reset threshold still applies - meaning it will assert RESET when VCC falls below 2.63V, which occurs immediately upon power-up from 1.8V. Therefore, it functions as a power-good monitor only when VCC > 2.63V; for 1.8V rails, use lower-threshold variants like MAX6363PUT23 (2.32V).
MAX6363PUT26 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:
- 2.63V
- 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-23-6
MAX6363PUT26 FAQ
1.How can I place an order for MAX6363PUT26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363PUT26 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 MAX6363PUT26 reliable?
The price and inventory of MAX6363PUT26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363PUT26 is usually 5 days.
3.What payment methods are accepted for MAX6363PUT26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363PUT26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363PUT26?
MAX6363PUT26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363PUT26 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 MAX6363PUT26?
For technical support, including MAX6363PUT26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363PUT26 requirements.
6.How does Aetrix verify that MAX6363PUT26 is sourced from the original manufacturer or authorized distributors?
All MAX6363PUT26 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 MAX6363PUT26 meets industry standards.
7.What is the process for return or replacement of MAX6363PUT26?
All MAX6363PUT26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363PUT26, 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 MAX6363PUT26 part is unused and in its original packaging.
Return procedure for MAX6363PUT26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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