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Analog Devices Inc./Maxim Integrated MAX6364LUT29-T
- Part No.:
- MAX6364LUT29-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364LUT29-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,828
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Product details
Overview
MAX6364LUT29-T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary adjustable reset input (RESET IN), battery switchover, and active-low push-pull reset output. It operates from +1.2V supply, features factory-set 2.93V reset threshold, guarantees RESET/RESET validity down to 1.2V, and delivers 150ms minimum reset timeout - used in portable/battery-powered equipment for SRAM backup and brownout protection.
For engineers reviewing the MAX6364LUT29-T datasheet, MAX6364LUT29-T pinout, MAX6364LUT29-T application, or MAX6364LUT29-T equivalent, key selection criteria include its 2.93V precision VTH, 1.235V RESET IN reference, SOT23-6 package, -40°C to +85°C temperature range, and support for battery-backed SRAM retention during power failure.
Technical Context
The MAX6364LUT29-T integrates a precision voltage comparator for VCC monitoring (2.93V ±1.5%), an independent 1.235V reference for user-adjustable RESET IN, and a battery switchover MOSFET with <2.7Ω on-resistance at VBATT = 2.8V. Its push-pull RESET output drives loads directly without external pull-up.
It supports dual-supply operation: VCC (2.4V–5.5V) powers normal operation, while BATT (up to 6V) supplies OUT during brownout when VCC falls below VTH and VBATT exceeds VCC by ≥20mV. Reset assertion occurs on VCC fall, RESET IN fall, or manual trigger - with guaranteed 150ms timeout after recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% - ensures reliable detection of 3.0V rail brownout before µP malfunction |
| RESET IN Reference | 1.235V ±5mV - enables accurate secondary supply monitoring via external resistor divider |
| Supply Voltage Range | +1.2V to +5.5V - supports ultra-low-voltage operation and full compatibility with 1.8V/2.5V/3.3V/5V systems |
| Reset Timeout Period | 150ms minimum - meets JEDEC JESD22-A102 requirement for µP power-up stabilization |
| Quiescent Current | 15µA at VCC = 5.5V - extends battery life in always-on backup mode |
| Battery Standby Current | 0.05µA max at TA = -40°C to +85°C - minimizes drain on coin-cell batteries during long-term storage |
| VCC-to-OUT On-Resistance | 2.7Ω at VCC = 2.38V, IOUT = 25mA - limits voltage drop and heating during SRAM backup sourcing |
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 push-pull reset output | Drives µP RESET pin directly; no external pull-up required; sinks 20mA max |
| 2 - GND | Ground reference | Common return for VCC, BATT, and internal comparators; must be low-impedance |
| 3 - RESET IN | Auxiliary reset input | Compares to 1.235V internal reference; asserts reset if voltage falls below threshold |
| 4 - VCC | Main supply input | Primary power source; reset asserted when VCC drops below 2.93V |
| 5 - OUT | Switched output | Sources from VCC above VTH, or from BATT during brownout; powers SRAM or real-time clock |
| 6 - BATT | Backup battery input | Connects to coin cell or supercap; activates switchover when VCC < VTH and VBATT > VCC + 20mV |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.93V reset threshold | Eliminates external resistor network; reduces BOM count and layout area for 3.0V systems |
| User-adjustable RESET IN input | Enables monitoring of secondary rails (e.g., 5V analog supply) using R1/R2 divider per VRTH = 1.235V × (1 + R1/R2) |
| Push-pull RESET output | Provides direct drive capability for µP reset pins without pull-up resistors or level-shifting |
| Battery switchover with 40mV hysteresis | Prevents oscillation during slow VCC ramp-down; ensures clean transition between main and backup power |
| 150ms reset timeout with temperature stability | Maintains >145ms across -40°C to +85°C - guarantees µP initialization time under all conditions |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered glucose meter retains calibration data and real-time clock during AC power loss. IC Role / Device Role / Timing Role: Supervisory IC monitors main 3.3V rail and switches SRAM to CR2032 backup; asserts reset to halt firmware execution during brownout. Use Value: Prevents data corruption and clock drift using 0.05µA BATT standby current and 2.93V precise threshold aligned to 3.0V LDO dropout. | Use Scenario: Remote environmental sensor node records temperature/humidity hourly and transmits via LoRaWAN. IC Role / Device Role / Timing Role: MAX6364LUT29-T provides power-fail warning and controlled shutdown sequence via RESET IN tied to 1.8V sensor rail. Use Value: Enables graceful firmware save-to-EEPROM before power collapse, leveraging 1.235V reference and 150ms timeout for deterministic state capture. |
| POS Terminal Backup Systems | Smart Utility Meters |
Use Scenario: Retail point-of-sale terminal maintains transaction buffer and secure element state during brief grid interruption. IC Role / Device Role / Timing Role: Powers FRAM from BATT input during VCC dip; uses push-pull RESET to hold µC in reset until stable 3.3V resumes. Use Value: Guarantees atomic write completion using 2.7Ω VCC-to-OUT resistance and 150ms delay - eliminating need for external power-fail interrupt logic. | Use Scenario: Electricity meter with tamper-detection circuitry preserves metrology registers and time-of-use billing data during mains outage. IC Role / Device Role / Timing Role: Monitors both 3.3V MCU rail and 5.0V analog front-end via RESET IN divider; triggers coordinated reset and backup enable. Use Value: Achieves Class 0.2 accuracy retention by preventing partial writes during undervoltage, using factory-trimmed 2.93V threshold matched to system LDO spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364PUT29-T | Same 2.93V threshold and RESET IN function, but active-low open-drain RESET output | Requires external pull-up resistor; less suitable for driving heavy capacitive loads directly | Select when interfacing with legacy µPs requiring open-drain reset or level translation |
| TPS3808G33DBVR | 3.3V fixed threshold, no RESET IN input, 200ms reset timeout, 1.8V–6.0V supply range | Lacks auxiliary monitoring capability; optimized for single-rail 3.3V systems only | Choose for cost-sensitive designs where secondary supply monitoring is unnecessary |
Compared with MAX6364LUT29-T, MAX6364PUT29-T trades push-pull drive strength for open-drain flexibility, while TPS3808G33DBVR sacrifices adjustability and low-voltage operation for higher integration density and lower quiescent current in dedicated 3.3V applications.
Availability
MAX6364LUT29-T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminal backup systems, and smart utility meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6364LUT29-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, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX6361–MAX6364 family targets battery-backed µP systems requiring reliable power monitoring, switchover, and reset generation - with emphasis on low quiescent current, wide supply range, and compact SOT23 packaging.
FAQ
What is the exact reset threshold voltage of the MAX6364LUT29-T?
The MAX6364LUT29-T has a factory-trimmed reset threshold of 2.93V, with ±1.5% tolerance over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and specified in the Electrical Characteristics table under "Reset Threshold" (VTH). It is designed to reliably monitor 3.0V power rails while providing margin against noise and drift.
How does the RESET IN pin function on the MAX6364LUT29-T?
The RESET IN pin on the MAX6364LUT29-T connects to an internal 1.235V precision reference comparator. When the voltage at RESET IN falls below 1.235V, the device asserts reset. Users configure it as an undervoltage detector for secondary supplies using an external resistor divider - for example, a 273kΩ/100kΩ divider sets a 4.60V trip point. Input leakage is ≤±25nA, enabling high-impedance dividers.
Does the MAX6364LUT29-T support battery switchover, and what are the switching conditions?
Yes, the MAX6364LUT29-T supports automatic battery switchover. Switching occurs when two conditions are met: (1) VCC falls below the 2.93V reset threshold, and (2) VBATT exceeds VCC by at least 20mV. A 40mV hysteresis prevents chatter during slow VCC ramps. The internal MOSFET connects BATT to OUT, with on-resistance as low as 2.7Ω at 2.8V - verified in the Typical Operating Characteristics graphs.
What is the reset timeout period of the MAX6364LUT29-T, and is it temperature-stable?
The MAX6364LUT29-T guarantees a minimum reset timeout period of 150ms after VCC rises above the 2.93V threshold. This value remains stable across temperature: typical performance is 155ms at +25°C and >145ms at -40°C and +85°C, as shown in Figure MAX6361 toc05. The timeout is internally generated and does not require external components.
What package type and footprint does the MAX6364LUT29-T use?
The MAX6364LUT29-T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058). It has a standard 0.95mm pitch, 2.9mm × 1.6mm body size, and 1.1mm maximum height. Land pattern number 90-0175 is recommended. The "-T" suffix indicates tape-and-reel packaging; lead-free versions use "+T". Pin 1 is marked with a dot or beveled edge.
MAX6364LUT29-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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- 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
MAX6364LUT29-T FAQ
1.How can I place an order for MAX6364LUT29-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364LUT29-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 MAX6364LUT29-T reliable?
The price and inventory of MAX6364LUT29-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364LUT29-T is usually 5 days.
3.What payment methods are accepted for MAX6364LUT29-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364LUT29-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364LUT29-T?
MAX6364LUT29-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364LUT29-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 MAX6364LUT29-T?
For technical support, including MAX6364LUT29-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364LUT29-T requirements.
6.How does Aetrix verify that MAX6364LUT29-T is sourced from the original manufacturer or authorized distributors?
All MAX6364LUT29-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 MAX6364LUT29-T meets industry standards.
7.What is the process for return or replacement of MAX6364LUT29-T?
All MAX6364LUT29-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364LUT29-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 MAX6364LUT29-T part is unused and in its original packaging.
Return procedure for MAX6364LUT29-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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