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Analog Devices Inc./Maxim Integrated MAX6364PUT46+T
- Part No.:
- MAX6364PUT46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364PUT46+T.pdf
- Description:
- IC SUPERVISOR MPU LP SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,789
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Product details
Overview
MAX6364PUT46+T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary adjustable reset input, battery switchover, and active-low/open-drain reset output. It operates from +1.2V supply, features 4.63V factory-preset reset threshold (min 4.50V), 150ms minimum reset timeout, and guarantees RESET/RESET validity down to 1.2V. It is used in portable/battery-powered equipment for RAM backup during brownout.
For engineers reviewing the MAX6364PUT46+T datasheet, MAX6364PUT46+T pinout, MAX6364PUT46+T application, or MAX6364PUT46+T equivalent, key selection criteria include its 4.63V reset threshold tolerance, 1.235V RESET IN comparator reference, SOT23-6 package compatibility, and support for user-adjustable secondary power monitoring via external resistor divider.
Technical Context
The MAX6364PUT46+T implements a precision voltage-monitoring architecture with dual-path power control: VCC powers OUT above reset threshold; when VCC falls below 4.63V and drops 20mV below VBATT, an internal MOSFET switches OUT to battery source. Its RESET IN input compares against a 1.235V internal reference with ±25nA leakage, enabling programmable undervoltage detection of secondary supplies.
This variant belongs to the MAX6364 family and features active-low open-drain RESET output, no manual reset (MR) or watchdog (WDI) inputs, and includes BATT ON status signaling only on MAX6363 variants - thus MAX6364PUT46+T excludes BATT ON but retains full battery switchover logic and RESET IN functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.50V (min), 4.63V (typ), 4.75V (max) - sets precise brownout detection point for +5V systems |
| RESET IN Reference | 1.235V (typ) - enables accurate secondary supply monitoring via external R1/R2 divider |
| Reset Timeout Period | 150ms (min) - ensures µP remains held in reset long enough for stable power recovery |
| Supply Voltage Range | +1.2V to +5.5V - supports operation directly from single-cell Li+ or low-voltage logic rails |
| Supply Current | 15µA (max at VCC = 5.5V) - minimizes quiescent drain in always-on battery backup mode |
| Battery Standby Current | 0.05µA (max over temp) - preserves backup battery life for years in storage or standby |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
Package: 6-pin SOT23 (U6-1), RoHS-compliant, surface-mount, footprint compatible with JEDEC MO-178AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, RESET IN low condition, or after reset timeout; requires external pull-up |
| 2 - GND | Ground reference | Common return path for VCC, VBATT, and all internal comparators and logic |
| 3 - RESET IN | Auxiliary reset input | Compares external voltage to 1.235V reference; falling edge below threshold triggers reset assertion |
| 4 - VCC | Main supply input | Primary power source; powers internal circuitry and supplies OUT when above reset threshold |
| 5 - OUT | Power output | Switches between VCC and VBATT based on voltage comparison; delivers up to 150mA from VCC |
| 6 - BATT | Backup battery input | Provides backup power to OUT when VCC falls below threshold and VBATT > VCC + 20mV |
Key Features
| Feature | Design Value |
|---|---|
| User-adjustable secondary reset monitor | RESET IN pin accepts externally divided voltage referenced to 1.235V, enabling custom thresholds (e.g., 4.60V using 100kΩ/273kΩ divider) |
| Guaranteed 1.2V operation | Full functionality-including RESET assertion and battery switchover-maintained even when VCC or VBATT drops to 1.2V |
| Low-power battery backup mode | Draws ≤0.05µA from battery when VCC is absent, extending shelf life of coin-cell or Li+ backup sources |
| Transient-immune reset detection | Rejects VCC glitches as short as 30µs when 100mV below threshold, preventing spurious resets in noisy environments |
| Integrated battery switchover MOSFET | Automatic seamless transition to backup power with 40mV hysteresis, eliminating need for external diodes or controllers |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered ECG monitor retaining SRAM state during AC power loss or low-battery shutdown. IC Role / Device Role / Timing Role: Supervisory IC providing VCC brownout detection, automatic battery switchover to SRAM supply (OUT), and RESET assertion to halt CPU until stable power resumes. Use Value: Prevents data corruption by holding µP in reset while switching to backup power and maintaining RAM voltage within spec (≥1.2V) for >10 years on CR2032. | Use Scenario: Remote sensor node logging temperature/humidity to nonvolatile memory during grid outages. IC Role / Device Role / Timing Role: Monitors main 5V rail and secondary 3.3V analog supply via RESET IN; asserts reset if either fails, ensuring clean restart upon recovery. Use Value: Dual-supply monitoring avoids false resets from isolated analog rail dips, improving field reliability without adding discrete comparators. |
| POS Terminals | Smart Meters |
Use Scenario: Retail terminal preserving transaction buffer during brief mains interruption or battery swap. IC Role / Device Role / Timing Role: Supplies uninterrupted power to SRAM via OUT; asserts RESET to freeze processor state until VCC stabilizes post-interruption. Use Value: 150ms guaranteed reset timeout prevents premature µP release, ensuring EEPROM write completion before restart. | Use Scenario: Electricity meter maintaining real-time clock and tamper logs during utility power failure. IC Role / Device Role / Timing Role: Switches RTC/SRAM supply from mains to supercapacitor or Li+ cell; monitors backup voltage level via RESET IN to warn of imminent depletion. Use Value: 1.235V RESET IN reference enables accurate end-of-life detection for backup source, triggering alert before data loss occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT46+T | Same reset threshold (4.63V), identical pinout and RESET IN function, but uses active-high open-drain RESET output instead of active-low | Requires inverted reset logic on µP side; unsuitable where hardware reset polarity is fixed | Select when host µP accepts active-high reset or pull-down reset configuration is available |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no RESET IN input, push-pull reset output, higher quiescent current (1.1µA vs. 15µA) | Lacks auxiliary voltage monitoring capability; limited to single-rail monitoring without external components | Choose for cost-sensitive, single-threshold applications where secondary supply monitoring is unnecessary |
Compared with MAX6364HUT46+T, the MAX6364PUT46+T provides native active-low reset compatibility with most µPs, while TPS3808G33DBVR offers lower BOM count in simple 3.3V systems but sacrifices programmable secondary monitoring and ultra-low battery current.
Availability
MAX6364PUT46+T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, and smart meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6364PUT46+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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6364PUT46+T belongs to the MAX6361–MAX6364 family of low-power µP supervisory circuits engineered specifically for battery-backed memory retention and reliable power-fail response in space-constrained portable and industrial systems.
FAQ
What is the exact reset threshold voltage for MAX6364PUT46+T?
The MAX6364PUT46+T has a factory-preset reset threshold of 4.63V (typical), with guaranteed minimum of 4.50V and maximum of 4.75V over temperature. This value is laser-trimmed during production and applies specifically to the VCC supply monitoring function-not the RESET IN input, which references a separate 1.235V internal bandgap.
Does MAX6364PUT46+T support battery switchover, and what are the conditions?
Yes, MAX6364PUT46+T supports automatic battery switchover. It connects OUT to BATT when VCC falls below the 4.63V threshold AND VCC drops at least 20mV below VBATT. A 40mV hysteresis prevents oscillation during slow VCC decay. The device draws less than 0.05µA from the battery in this mode, preserving long-term backup capability.
How does the RESET IN pin function on MAX6364PUT46+T?
The RESET IN pin on MAX6364PUT46+T compares an external voltage to a precise 1.235V internal reference. When the applied voltage falls below this threshold, the device asserts RESET. It supports user-programmable undervoltage detection-for example, a 4.60V trip point can be set using R1 = 273kΩ and R2 = 100kΩ per the datasheet equation.
What is the reset timeout period for MAX6364PUT46+T, and is it adjustable?
The MAX6364PUT46+T provides a fixed minimum reset timeout period of 150ms after VCC rises above the reset threshold or after RESET IN returns high. This timing is internally generated and not adjustable via external components. It ensures sufficient hold time for µP power stabilization and is guaranteed over -40°C to +85°C.
Can MAX6364PUT46+T operate with a 1.2V supply, and what functions remain active?
Yes, MAX6364PUT46+T is fully specified to operate with VCC or VBATT as low as +1.2V. At this voltage, all core functions remain active: RESET assertion, battery switchover logic, RESET IN monitoring, and OUT regulation. The 150ms reset timeout and 1.235V reference accuracy are maintained, enabling robust operation in ultra-low-voltage battery systems.
MAX6364PUT46+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:
- 4.63V
- 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
MAX6364PUT46+T FAQ
1.How can I place an order for MAX6364PUT46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364PUT46+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 MAX6364PUT46+T reliable?
The price and inventory of MAX6364PUT46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364PUT46+T is usually 5 days.
3.What payment methods are accepted for MAX6364PUT46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364PUT46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364PUT46+T?
MAX6364PUT46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364PUT46+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 MAX6364PUT46+T?
For technical support, including MAX6364PUT46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364PUT46+T requirements.
6.How does Aetrix verify that MAX6364PUT46+T is sourced from the original manufacturer or authorized distributors?
All MAX6364PUT46+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 MAX6364PUT46+T meets industry standards.
7.What is the process for return or replacement of MAX6364PUT46+T?
All MAX6364PUT46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364PUT46+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 MAX6364PUT46+T part is unused and in its original packaging.
Return procedure for MAX6364PUT46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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