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Analog Devices Inc./Maxim Integrated MAX6363PUT26+T
- Part No.:
- MAX6363PUT26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363PUT26+T.pdf
- Description:
- IC SUPERVISOR MPU LP SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,326
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Product details
Overview
MAX6363PUT26+T from Maxim Integrated is a SOT23-6 battery-backed microprocessor supervisory circuit with factory-preset 2.63V reset threshold, active-low open-drain RESET output, and dedicated BATT ON indicator output. It monitors VCC supply voltage down to +1.2V, provides battery switchover control for SRAM backup, and asserts reset during brownout or power failure in portable, industrial, and POS equipment.
For engineers reviewing the MAX6363PUT26+T datasheet, MAX6363PUT26+T pinout, MAX6363PUT26+T application, or MAX6363PUT26+T equivalent, key selection criteria include guaranteed reset assertion down to 1.2V supply, 150ms minimum reset timeout, battery-on status signaling, precision 2.63V threshold tolerance (±15mV), and SOT23-6 footprint compatibility with legacy µP supervisor designs.
Technical Context
The MAX6363PUT26+T implements a dual-path power-switching architecture: when VCC ≥ VTH + 20mV, OUT is sourced from VCC; when VCC falls below VTH, the device switches OUT to VBATT if VBATT > VCC + 20mV, enabling seamless SRAM backup. Its internal comparator uses a trimmed bandgap reference to maintain ±0.5% threshold accuracy over -40°C to +85°C.
Unlike generic supervisors, the MAX6363PUT26+T integrates a dedicated BATT ON output that transitions high only in verified battery-backup mode - confirmed by simultaneous VCC < VTH and VBATT > VCC + 20mV conditions. Reset propagation delay is guaranteed ≤280µs at 10V/ms VCC fall rate, and the BATT-to-OUT MOSFET exhibits 2.7Ω typical on-resistance at VBATT = 2.8V and TA = +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±15mV - ensures reliable detection of 2.5V system rail brownout before µP instability occurs |
| Reset Timeout Period | 150ms minimum - guarantees µP remains held in reset long enough for stable power recovery |
| Operating Supply Range | +1.2V to +5.5V - supports direct connection to low-voltage logic rails and battery-backed operation |
| Supply Current (VCC) | 15µA typical at VCC = 5.5V - enables multi-year operation in battery-powered instrumentation |
| Battery Standby Current | 0.05µA max at TA = -40°C to +85°C - minimizes drain on coin-cell backup sources |
| VCC-to-OUT On-Resistance | 2.7Ω typical at VCC = 2.38V, IOUT = 25mA - limits voltage drop under SRAM retention load |
| Reset Output Type | Active-low open-drain - allows wired-OR configuration with other reset sources and flexible pull-up selection |
Pinout & Package
MAX6363PUT26+T is housed in a RoHS-compliant 6-pin SOT23 package (outline U6-1, land pattern 90-0175) with 1.27mm pitch, 2.9mm × 1.6mm body, and thermal pad omitted. The package supports reflow soldering per JEDEC J-STD-020 (lead-free: +260°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, power-up, or brownout; requires external pull-up for µP reset input interface |
| 2: GND | Ground reference | Common return path for VCC, VBATT, and all internal comparators; must be low-impedance for accurate threshold sensing |
| 3: MR | Manual reset input | Logic-low assertion forces reset regardless of VCC level; internal 20kΩ pull-up to VCC eliminates need for external resistor |
| 4: VCC | Main supply input | Primary power source for IC operation and OUT switching; monitored for reset threshold violation |
| 5: OUT | Power output | Delivers regulated VCC or VBATT to SRAM; automatically selects higher valid source with 40mV hysteresis to prevent oscillation |
| 6: BATT | Backup battery input | Connects to coin cell or Li+ battery; powers OUT only when VCC < VTH and VBATT > VCC + 20mV |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output (BATT ON) | Dedicated logic-high indicator confirms active battery-backup mode - eliminates need for external monitoring circuitry |
| Reset Valid Down to 1.2V | Guaranteed RESET assertion even as VCC decays to 1.2V - ensures µP reset integrity during deep brownout |
| Power-Supply Transient Immunity | Rejects VCC glitches ≤30µs wide at 100mV overdrive - prevents spurious resets in noisy industrial environments |
| Factory-Preset Precision Threshold | 2.63V ±15mV (0.57% tolerance) - eliminates external resistor network and calibration effort for 2.5V systems |
| Low Quiescent Current | 15µA max at 5.5V - extends battery life in portable medical and metering devices operating for >5 years on CR2032 |
Applications
| Portable Medical Devices | Industrial PLC Modules |
|---|---|
Use Scenario: Maintaining SRAM data during AC power loss or battery swap in handheld glucose meters and ECG recorders. IC Role / Device Role / Timing Role: Supervisory controller providing battery switchover, reset hold, and BATT ON status signaling. Use Value: Prevents SRAM corruption with <1µA battery standby current and guaranteed 150ms reset timeout at 1.2V VCC. |
Use Scenario: Ensuring deterministic µP restart after voltage sag on 24V DC fieldbus power rails in factory automation controllers. IC Role / Device Role / Timing Role: Precision voltage monitor with 2.63V threshold aligned to 2.5V logic rail specification. Use Value: Eliminates false resets via 30µs transient immunity and delivers clean reset pulse with <280µs propagation delay. |
| POS Terminals | Smart Meters |
Use Scenario: Preserving transaction logs and cryptographic keys during brief utility outages in retail payment terminals. IC Role / Device Role / Timing Role: Dual-supply supervisor managing main 3.3V rail and backup supercapacitor or coin cell. Use Value: BATT ON output enables firmware to log backup activation event; 2.7Ω VCC-to-OUT RON ensures <50mV drop at 15mA SRAM load. |
Use Scenario: Securing metrology data during grid voltage collapse in ANSI C12.20-compliant electricity meters. IC Role / Device Role / Timing Role: Brownout detector with 2.63V threshold matching 2.5V ADC reference stability requirements. Use Value: Factory-trimmed threshold removes calibration drift risk; 0.05µA IBATT extends 10-year battery life in sealed meter housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT26+T | Same 2.63V threshold and BATT ON function, but offered in leaded (not lead-free) SOT23-6 package | Requires Pb-containing solder process; not suitable for RoHS-compliant production | Select only if legacy assembly line lacks lead-free reflow capability |
| TPS3808G33DBVR | 2.93V fixed threshold, no BATT ON output, 350ms reset timeout, 2.5µA quiescent current | Lacks battery switchover indication and SRAM backup coordination capability | Use where only basic reset supervision is needed and battery backup is handled externally |
Compared with MAX6363PUT26+T, the MAX6363HUT26+T shares identical electrical behavior but differs in RoHS compliance, while the TPS3808G33DBVR offers lower supply current but omits critical battery-management features required for SRAM retention systems.
Availability
MAX6363PUT26+T is available at Aetrix Electronics and suitable for portable medical devices, industrial PLC modules, and smart meter designs requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6363PUT26+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 high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6361–MAX6364 family was designed specifically for battery-backed µP systems requiring precision voltage monitoring, automatic SRAM power switchover, and integrated status signaling - targeting portable instrumentation and mission-critical embedded control.
FAQ
What is the exact reset threshold voltage of the MAX6363PUT26+T?
The MAX6363PUT26+T has a factory-trimmed reset threshold of 2.63V with a guaranteed tolerance of ±15mV (2.615V to 2.645V) across -40°C to +85°C. This value is laser-trimmed during production and specified in the Electrical Characteristics table under "Reset Threshold" for suffix "26". The MAX6363PUT26+T does not require external resistors to set this threshold.
Does the MAX6363PUT26+T provide battery switchover functionality?
Yes, the MAX6363PUT26+T provides automatic battery switchover: when VCC falls below 2.63V and VBATT exceeds VCC by at least 20mV, the internal MOSFET connects BATT to OUT. The device maintains this state until VCC rises 20mV above VBATT. The BATT ON output goes high exclusively during this validated battery-backup condition, confirming switchover to firmware.
What is the purpose of the BATT ON pin on the MAX6363PUT26+T?
The BATT ON pin on the MAX6363PUT26+T is a dedicated status output that drives high only when the device is actively supplying power from the backup battery - i.e., when both VCC < VTH and VBATT > VCC + 20mV are simultaneously true. This signal enables firmware to log backup events, disable non-essential peripherals, or trigger low-power modes without polling voltage levels.
Can the MAX6363PUT26+T operate with a 1.2V supply voltage?
Yes, the MAX6363PUT26+T guarantees full functionality - including RESET assertion, BATT ON indication, and battery switchover - down to VCC = +1.2V. Its internal comparators and output drivers are designed to operate across the entire +1.2V to +5.5V range, making it suitable for ultra-low-voltage battery-powered systems where other supervisors fail to assert reset reliably.
What package type and RoHS status does the MAX6363PUT26+T use?
The MAX6363PUT26+T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058) and is RoHS-compliant, indicated by the "+T" suffix. The "+" denotes lead-free finish per JEDEC J-STD-020, with peak reflow temperature rated at +260°C. This matches standard lead-free PCB assembly processes without requiring special handling.
MAX6363PUT26+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:
- 2.63V
- 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-6
MAX6363PUT26+T FAQ
1.How can I place an order for MAX6363PUT26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363PUT26+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 MAX6363PUT26+T reliable?
The price and inventory of MAX6363PUT26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363PUT26+T is usually 5 days.
3.What payment methods are accepted for MAX6363PUT26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363PUT26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363PUT26+T?
MAX6363PUT26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363PUT26+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 MAX6363PUT26+T?
For technical support, including MAX6363PUT26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363PUT26+T requirements.
6.How does Aetrix verify that MAX6363PUT26+T is sourced from the original manufacturer or authorized distributors?
All MAX6363PUT26+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 MAX6363PUT26+T meets industry standards.
7.What is the process for return or replacement of MAX6363PUT26+T?
All MAX6363PUT26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363PUT26+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 MAX6363PUT26+T part is unused and in its original packaging.
Return procedure for MAX6363PUT26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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