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Analog Devices Inc./Maxim Integrated MAX6364PUT23-T
- Part No.:
- MAX6364PUT23-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364PUT23-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,988
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Product details
Overview
MAX6364PUT23-T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary user-adjustable reset input (RESET IN), battery switchover, and active-low/open-drain reset output. It operates from +1.2V supply, features factory-preset 2.32V reset threshold, 150ms minimum reset timeout, and supports backup-battery operation for SRAM retention in brownout conditions. Used in portable/battery-powered equipment requiring reliable power monitoring.
For engineers reviewing the MAX6364PUT23-T datasheet, MAX6364PUT23-T pinout, MAX6364PUT23-T application, or MAX6364PUT23-T equivalent, key selection criteria include its 2.32V reset threshold, RESET IN comparator referenced to 1.235V, SOT23-6 package, battery switchover hysteresis, and guaranteed RESET/RESET validity down to 1.2V.
Technical Context
The MAX6364PUT23-T implements a precision voltage-monitoring architecture with dual-supply capability: VCC powers the device and OUT during normal operation, while BATT supplies OUT when VCC falls below the 2.32V threshold and remains below VBATT by ≥20mV. Its internal 1.235V reference enables external resistor-divider programming of secondary supply reset thresholds via the RESET IN pin.
It integrates a battery-switchover MOSFET with temperature-dependent on-resistance (e.g., 2.7Ω at VBATT = 2.8V, IOUT = 25mA), guarantees reset assertion during VCC transients ≥100mV below threshold for ≤30µs, and maintains functional reset output down to 1.2V supply - critical for ultra-low-voltage brownout detection in Li+ battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (factory-preset, ±1.5% over -40°C to +85°C) - ensures reliable detection of 2.5V rail collapse before system instability. |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT) - supports direct operation from single-cell Li+ (2.7–4.2V) or coin-cell (2.0–3.6V) without regulation. |
| Reset Timeout Period | 150ms minimum - provides sufficient hold time for µP initialization after power recovery. |
| RESET IN Threshold | 1.235V (±5mV, -40°C to +85°C) - enables accurate undervoltage detection of secondary supplies using external R1/R2 divider. |
| Supply Current (VCC) | 10µA typical at VCC = 2.8V - minimizes quiescent drain on primary supply during long standby. |
| Battery Standby Current | 0.02µA typical at VBATT = 2.8V - extends backup battery life beyond 10 years in low-duty-cycle applications. |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration with other reset sources and level translation to diverse µP inputs. |
Pinout & Package
Package: 6-pin SOT23 (U6-1, outline 21-0058), 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 < 2.32V, RESET IN < 1.235V, or after manual/brownout event; requires external pull-up for logic-level compatibility. |
| 2: GND | Ground reference | Common return path for VCC, VBATT, and all internal comparators; must be low-impedance connection to minimize noise coupling. |
| 3: RESET IN | Auxiliary reset input | Compares external voltage (via R1/R2 divider) to 1.235V reference; falling edge below threshold asserts reset with 150ms timeout after release. |
| 4: VCC | Main supply input | Primary power source; powers internal circuitry and drives OUT until VCC drops below 2.32V and VBATT exceeds VCC by ≥20mV. |
| 5: OUT | Power output | Delivers regulated VCC or VBATT (whichever is higher and valid) to SRAM or real-time clock; supports up to 150mA from VCC, 25mA from BATT. |
| 6: BATT | Backup battery input | Connects to Li+ or coin cell; internal MOSFET switches OUT to BATT when VCC fails; 40mV hysteresis prevents oscillation during slow VCC decay. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 2.32V reset threshold | Eliminates external resistor network for primary 2.5V rail monitoring, reducing BOM count and layout area. |
| Auxiliary RESET IN with 1.235V reference | Enables precise programmable reset of secondary supplies (e.g., 4.6V analog rail) using two standard resistors - no trimming required. |
| Battery switchover with 40mV hysteresis | Prevents repeated switching during marginal VCC decay, ensuring stable SRAM power during gradual brownout events. |
| 150ms minimum reset timeout | Guarantees µP reset pulse width exceeds typical boot ROM execution time, preventing premature code execution. |
| 1.2V minimum operating voltage | Allows continued supervision and reset assertion even as Li+ battery discharges to end-of-life (~2.0V under load). |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
|
Use Scenario: Wearable ECG monitor powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises main 3.3V LDO output and triggers reset if voltage sags below 2.32V; uses RESET IN to monitor backup supercap voltage. Use Value: Prevents corrupted sensor data storage during battery depletion by asserting reset before µC enters undefined state. |
Use Scenario: Remote environmental logger with solar-charged Li+ battery and flash memory retention requirement. IC Role / Device Role / Timing Role: Switches SRAM power from VCC to BATT during grid outage; asserts RESET to halt logging during brownout. Use Value: Guarantees 100% data integrity across power transitions with zero SRAM corruption risk. |
| Smart Meter Battery Backup | POS Terminal Power Fail Detection |
|
Use Scenario: Electricity meter retaining time-of-use billing data during AC mains failure. IC Role / Device Role / Timing Role: Monitors 3.3V meter SoC supply; activates BATT ON signal (via MAX6363 variant family) and holds reset until backup is stable. Use Value: Enables seamless failover to backup power with <150ms interruption - compliant with IEC 62053-21 timestamp continuity. |
Use Scenario: Retail POS terminal with volatile RAM cache holding uncommitted transaction records. IC Role / Device Role / Timing Role: Detects 5V DC supply collapse from AC adapter failure; asserts RESET to freeze CPU and initiate safe RAM dump to EEPROM. Use Value: Eliminates transaction loss by synchronizing reset assertion with power-fail warning window defined by 2.32V threshold margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT23-T | Same 2.32V threshold and RESET IN function, but active-high open-drain RESET output instead of active-low. | Requires inverted reset logic on µP side; incompatible with systems expecting active-low reset assertion. | Select only if host µP reset input is active-high and pull-down configured. |
| TPS3808G125DBVR | 2.5V fixed threshold, no RESET IN pin, 360ms reset timeout, 2.9V to 6.0V supply range. | Lacks auxiliary reset input for secondary supply monitoring; longer timeout may delay recovery in fast-cycling systems. | Choose when only primary rail monitoring is needed and longer reset hold time is acceptable. |
Compared with MAX6364PUT23-T, MAX6364HUT23-T offers identical supervision accuracy and battery switchover but requires µP-level logic inversion, while TPS3808G125DBVR trades RESET IN flexibility for higher supply voltage tolerance and longer reset duration - making MAX6364PUT23-T optimal for dual-rail, low-voltage, battery-critical designs.
Availability
MAX6364PUT23-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, smart meter battery backup, and POS terminal power fail detection requiring stable component supply across extended product lifecycles.
Supply support for MAX6364PUT23-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 interface applications in industrial, automotive, and computing markets.
The MAX6361–MAX6364 family was engineered specifically for ultra-low-power microprocessor supervision in battery-backed systems, emphasizing sub-2.5V reset thresholds, nanoscale quiescent current, and robust battery switchover control.
FAQ
What is the exact reset threshold voltage of the MAX6364PUT23-T?
The MAX6364PUT23-T has a factory-preset reset threshold of 2.32V, with guaranteed tolerance of ±1.5% over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and does not require external calibration. The MAX6364PUT23-T datasheet specifies 2.25V (min), 2.32V (typ), and 2.38V (max) at TA = +25°C, with tighter bounds maintained across temperature.
How does the RESET IN pin function on the MAX6364PUT23-T?
The RESET IN pin on the MAX6364PUT23-T connects to an internal comparator referenced to a precise 1.235V bandgap voltage. When the voltage at RESET IN falls below 1.235V, the device asserts the RESET output. This allows users to monitor secondary power rails (e.g., 5V analog supply) by configuring an external resistor divider. The MAX6364PUT23-T datasheet provides the formula VRTH = 1.235V × (1 + R1/R2) for setting custom thresholds.
Can the MAX6364PUT23-T operate without a backup battery connected?
Yes, the MAX6364PUT23-T can operate without a backup battery. In this configuration, connect BATT to GND and tie VCC directly to OUT. The device will still provide reset supervision for the primary supply, assert RESET during VCC drops below 2.32V, and maintain full functionality of the RESET IN pin. However, battery switchover and BATT ON signaling (on MAX6363 variants) are disabled.
What is the maximum load current supported by the OUT pin of the MAX6364PUT23-T?
The OUT pin of the MAX6364PUT23-T supports up to 150mA when sourced from VCC and up to 25mA when sourced from BATT. These limits are specified in the Electrical Characteristics table under "VCC to OUT On-Resistance" and "Battery-Switchover Threshold" conditions. Exceeding these currents risks violating the guaranteed 2.32V reset threshold accuracy due to IR drop across internal FET resistance.
Is the MAX6364PUT23-T pin-compatible with other members of the MAX6361–MAX6364 family?
Yes, all MAX6361–MAX6364 devices share identical SOT23-6 pinouts and footprint, including the MAX6364PUT23-T. Pin 1 is RESET, Pin 2 is GND, Pin 3 is RESET IN, Pin 4 is VCC, Pin 5 is OUT, and Pin 6 is BATT. Functionally, differences exist in reset output polarity (active-low vs. active-high) and feature set (e.g., WDI on MAX6362, BATT ON on MAX6363), but PCB layout and soldering are fully interchangeable.
MAX6364PUT23-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
MAX6364PUT23-T FAQ
1.How can I place an order for MAX6364PUT23-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364PUT23-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 MAX6364PUT23-T reliable?
The price and inventory of MAX6364PUT23-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364PUT23-T is usually 5 days.
3.What payment methods are accepted for MAX6364PUT23-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364PUT23-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364PUT23-T?
MAX6364PUT23-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364PUT23-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 MAX6364PUT23-T?
For technical support, including MAX6364PUT23-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364PUT23-T requirements.
6.How does Aetrix verify that MAX6364PUT23-T is sourced from the original manufacturer or authorized distributors?
All MAX6364PUT23-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 MAX6364PUT23-T meets industry standards.
7.What is the process for return or replacement of MAX6364PUT23-T?
All MAX6364PUT23-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364PUT23-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 MAX6364PUT23-T part is unused and in its original packaging.
Return procedure for MAX6364PUT23-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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