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Analog Devices Inc./Maxim Integrated MAX6364PUT26-T
- Part No.:
- MAX6364PUT26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364PUT26-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,946
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Product details
Overview
MAX6364PUT26-T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary user-adjustable reset input, battery switchover, and power-failure warning functions. It operates from +1.2V supply, features factory-preset 2.63V reset threshold, 150ms minimum reset timeout, and active-low open-drain RESET output. Used in portable/battery-powered equipment to preserve SRAM during brownout.
For engineers reviewing the MAX6364PUT26-T datasheet, MAX6364PUT26-T pinout, MAX6364PUT26-T application, or MAX6364PUT26-T equivalent, key selection criteria include adjustable RESET IN threshold (1.235V reference), battery-backup mode behavior, SOT23-6 package constraints, and compatibility with 2.5V/3.0V/3.3V/5.0V supply monitoring.
Technical Context
The MAX6364PUT26-T implements a precision voltage comparator for VCC monitoring with ±1.5% threshold accuracy over temperature, and a separate 1.235V reference-based comparator for the auxiliary RESET IN pin. Its internal MOSFET enables automatic switchover from VCC to backup battery (BATT) when VCC falls below VTH and VBATT exceeds VCC by ≥20mV.
Reset assertion is triggered by VCC falling below 2.63V, RESET IN falling below 1.235V, or manual intervention via MR (though MR is not functional in MAX6364 variant). The device guarantees RESET/RESET validity down to 1.2V supply and provides glitch immunity up to 100ns on RESET IN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (factory-preset, ±1.5% over -40°C to +85°C) - ensures reliable detection of 2.5V supply brownout |
| RESET Timeout Period | 150ms minimum - guarantees µP reset hold time sufficient for full power stabilization | Operating Supply Voltage | +1.2V to +5.5V - supports direct connection to Li+ battery or low-voltage logic rails |
| RESET IN Threshold | 1.235V (±5mV) - enables precise secondary supply monitoring via external resistor divider |
| Supply Current (VCC) | 15µA typical at VCC = 5.5V - minimizes quiescent drain in always-on battery-backed systems |
| Battery Standby Current | 0.05µA max at TA = -40°C to +85°C - preserves backup battery life for multi-year operation |
| VCC to OUT On-Resistance | 2.7Ω typical at VCC = 2.38V, IOUT = 25mA - limits voltage drop when powering SRAM from main supply |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, RoHS-compliant, tape-and-reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Pulled low during reset assertion; requires external pull-up for logic-high state; compatible with µP reset inputs |
| 2: GND | Ground reference | Common return path for VCC, BATT, and all internal circuitry; must be low-impedance connection |
| 3: MR | Manual reset input | Internally pulled up to VCC; logic-low assertion forces reset; unused pin may be left floating or tied to VCC |
| 4: VCC | Main supply input | Primary power source (1.2V–5.5V); powers internal circuitry and supplies OUT during normal operation |
| 5: OUT | Power output | Switches between VCC and BATT; sources SRAM or real-time clock during brownout; rated for 150mA from VCC |
| 6: BATT | Backup battery input | Connects to coin cell or Li+ battery; activates switchover when VCC < VTH and VBATT > VCC + 20mV |
Key Features
| Feature | Design Value |
|---|---|
| Auxiliary RESET IN with 1.235V reference | Enables programmable undervoltage detection for secondary supplies (e.g., 4.6V analog rail) using two external resistors |
| Guaranteed 1.2V operation | Ensures functionality during deep brownout or single-cell Li+ discharge down to 2.0V nominal |
| 40mV switchover hysteresis | Prevents oscillation during slow VCC ramp-down by requiring 20mV rise above VBATT before reversion from battery to main supply |
| 100ns glitch immunity on RESET IN | Rejects noise spikes without false triggering, eliminating need for external RC filtering in noisy environments |
| 150ms min reset timeout | Meets JEDEC JESD78 reliability requirements for µP reset pulse width under all operating conditions |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose monitor maintains SRAM contents during intermittent charging cycles and low-battery shutdown. IC Role / Device Role / Timing Role: Supervisory IC monitors main 3.3V rail and triggers switchover to CR2032 backup when VCC drops below 2.63V; asserts RESET to halt MCU until stable power resumes. Use Value: Prevents data corruption in nonvolatile memory during power transitions; extends usable battery life via sub-µA standby current. | Use Scenario: Remote I/O node in factory automation retains configuration and last-state values during 24VDC supply interruption. IC Role / Device Role / Timing Role: MAX6364PUT26-T detects 24V-to-3.3V converter dropout, switches SRAM to backup supercapacitor, and holds µC in reset for ≥150ms post-recovery. Use Value: Eliminates need for external power-fail comparators and discrete MOSFET switchover circuits, reducing BOM count by 4 components. |
| Smart Utility Meters | Handheld Test Equipment |
Use Scenario: AMI meter logs consumption data to FRAM during AC mains failure using onboard LiSOCl₂ battery. IC Role / Device Role / Timing Role: Monitors 3.0V system rail; asserts RESET IN when auxiliary 5V analog supply dips below programmed 4.6V threshold; initiates graceful shutdown sequence. Use Value: Dual-threshold supervision (VCC + RESET IN) enables coordinated response to primary and secondary supply faults without software intervention. | Use Scenario: Portable oscilloscope retains calibration coefficients and user settings across battery swaps and USB host disconnects. IC Role / Device Role / Timing Role: Provides clean power sequencing to FPGA configuration memory and real-time clock; uses BATT ON signal (via MAX6363 variant) to enable backup power management logic. Use Value: SOT23-6 footprint allows integration into space-constrained handheld enclosures while supporting 10-year backup battery lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT26-T | Same 2.63V threshold and RESET IN function, but active-high open-drain RESET output | Requires inverted reset logic on µP side; incompatible with standard active-low reset inputs without level-shifting | Select when host µP accepts active-high reset or when interfacing with legacy designs using pull-down reset networks |
| TPS3808G12DBVR | Fixed 1.2V reset threshold, no auxiliary RESET IN, 360ms timeout, higher 12µA ICC | Lacks battery switchover and dual-supply monitoring; suited only for simple VCC-only reset applications | Choose only for cost-sensitive, single-rail systems where battery backup and secondary supply monitoring are unnecessary |
Compared with MAX6364PUT26-T, MAX6364HUT26-T offers identical supervision functionality but differs in reset polarity-requiring hardware adaptation-while TPS3808G12DBVR omits critical battery switchover and adjustable reset input capabilities, limiting its use to basic power-on reset scenarios.
Availability
MAX6364PUT26-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart utility meters, and handheld test equipment requiring stable component supply with long-term lifecycle support.
Supply support for MAX6364PUT26-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.
The MAX6361–MAX6364 family targets battery-backed microprocessor systems requiring reliable power monitoring, seamless backup switchover, and programmable fault detection-optimized for space-constrained, low-power embedded devices.
FAQ
What is the exact reset threshold voltage of the MAX6364PUT26-T?
The MAX6364PUT26-T has a factory-preset reset threshold of 2.63V (typical), 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 applies specifically to the VCC supply monitoring function-not the auxiliary RESET IN pin, which uses a fixed 1.235V internal reference.
Does the MAX6364PUT26-T support battery switchover functionality?
Yes, the MAX6364PUT26-T fully supports automatic battery switchover. When VCC falls below the 2.63V reset threshold and VBATT exceeds VCC by at least 20mV, the internal MOSFET connects the BATT pin to the OUT pin. Switchover hysteresis (40mV total) prevents oscillation during slow VCC recovery, ensuring stable SRAM power during brownout events.
Can the RESET IN pin of the MAX6364PUT26-T be used to monitor a 5.0V supply?
Yes, the RESET IN pin of the MAX6364PUT26-T can monitor a 5.0V supply using an external resistor divider. With its internal 1.235V reference, a 5.0V rail can be scaled to trigger reset at 4.60V by selecting R1 = 273kΩ and R2 = 100kΩ (as documented in the MAX6364 datasheet Typical Operating Circuit). Input leakage is ≤25nA, enabling high-impedance dividers without accuracy loss.
What is the maximum load current supported by the OUT pin of the MAX6364PUT26-T?
The OUT pin of the MAX6364PUT26-T supports up to 150mA when sourced from VCC (at VCC ≥ 4.75V), 65mA at VCC = 3.15V, and 25mA at VCC = 2.38V. In battery-backup mode, output current is limited by BATT voltage and internal MOSFET on-resistance (e.g., 2.0Ω typical at VBATT = 2.8V), with short-circuit protection active for up to 10 seconds.
Is the MAX6364PUT26-T pin-compatible with other members of the MAX6361–MAX6364 family?
Yes, all MAX6361–MAX6364 variants-including the MAX6364PUT26-T-share identical 6-pin SOT23 pinouts and package dimensions. Functionality differs only in feature set (e.g., MR, WDI, BATT ON, RESET IN) and reset output type (push-pull vs. open-drain, active-low vs. active-high), but pin assignments for VCC, GND, BATT, OUT, RESET, and RESET are consistent across the family.
MAX6364PUT26-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:
- 2.63V
- 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
MAX6364PUT26-T FAQ
1.How can I place an order for MAX6364PUT26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364PUT26-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 MAX6364PUT26-T reliable?
The price and inventory of MAX6364PUT26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364PUT26-T is usually 5 days.
3.What payment methods are accepted for MAX6364PUT26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364PUT26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364PUT26-T?
MAX6364PUT26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364PUT26-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 MAX6364PUT26-T?
For technical support, including MAX6364PUT26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364PUT26-T requirements.
6.How does Aetrix verify that MAX6364PUT26-T is sourced from the original manufacturer or authorized distributors?
All MAX6364PUT26-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 MAX6364PUT26-T meets industry standards.
7.What is the process for return or replacement of MAX6364PUT26-T?
All MAX6364PUT26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364PUT26-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 MAX6364PUT26-T part is unused and in its original packaging.
Return procedure for MAX6364PUT26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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