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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 MPU LP SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,009
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Product details
Overview
MAX6364LUT29+T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary adjustable reset input, battery switchover, and power-failure warning functionality. It operates from +1.2V supply, features factory-preset 2.93V reset threshold, 150ms minimum reset timeout, active-low push-pull RESET output, and supports SRAM backup in brownout conditions. Used in portable/battery-powered equipment requiring reliable µP reset and seamless battery fallback.
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 user-adjustable RESET IN comparator, SOT23-6 package, -40°C to +85°C temperature range, and guaranteed RESET/RESET validity down to 1.2V.
Technical Context
The MAX6364LUT29+T implements a precision voltage monitor with internal 2.93V threshold for VCC supervision and a separate 1.235V reference for external resistor-divider-based reset assertion via RESET IN. Its battery switchover logic requires both VCC < VTH and VCC < VBATT before enabling BATT-to-OUT connection, with 40mV hysteresis preventing oscillation during slow VCC decay.
It delivers an active-low push-pull RESET output with 150ms minimum timeout, valid down to 1.2V supply, and integrates glitch-immune MR input (not used in MAX6364 variant) and watchdog timer input (exclusive to MAX6362). The device uses BiCMOS process for low ICC (15µA typical at VCC = 3.6V) and robust transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% - precise brownout detection for +3.0V/3.3V systems |
| Supply Voltage Range | +1.2V to +5.5V - enables operation directly from single-cell Li+ or coin-cell batteries |
| Reset Timeout Period | 150ms minimum - ensures µP completes full power-up initialization before release |
| RESET Output Type | Active-low push-pull - eliminates need for external pull-up resistor, drives heavy loads directly |
| RESET IN Threshold | 1.235V ±5mV - stable reference for configuring secondary supply monitoring via R1/R2 divider |
| Quiescent Current | 15µA at VCC = 3.6V - extends battery life in always-on backup applications |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended commercial environments |
Pinout & Package
Package: 6-pin SOT23 (U6-1), RoHS-compliant, 2.0mm × 1.25mm footprint, 0.95mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Asserts logic low during VCC undervoltage, manual reset, or RESET IN fault; holds low ≥150ms after recovery |
| 2 - GND | Ground reference | Common return path for all internal circuits and OUT current sink/source |
| 3 - RESET IN | Auxiliary reset input | Compares external voltage to 1.235V reference; falling edge below threshold asserts reset |
| 4 - VCC | Main supply input | Primary power source; reset asserted when VCC falls below 2.93V |
| 5 - OUT | Power output | Sources from VCC normally; switches to BATT during brownout if VBATT > VCC + 20mV |
| 6 - BATT | Backup battery input | Provides backup power to OUT; enables battery switchover only when VCC < VTH and VCC < VBATT |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.93V reset threshold | ±1.5% accuracy over -40°C to +85°C eliminates external calibration for 3.0V/3.3V rails |
| User-adjustable RESET IN comparator | 1.235V internal reference enables programmable monitoring of secondary supplies (e.g., 4.60V via R1=273kΩ/R2=100kΩ) |
| Guaranteed RESET/RESET operation down to 1.2V | Ensures deterministic reset behavior even during deep battery discharge or ultra-low-VCC startup |
| Integrated battery switchover with 40mV hysteresis | Prevents chattering during slow VCC decay and ensures clean transition between main and backup power |
| 150ms minimum reset timeout | Meets JEDEC JESD78 requirements for µP initialization timing across voltage and temperature |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Wearable ECG monitor powered by rechargeable Li+ cell with SRAM-based event buffer. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and asserts reset if voltage drops below 2.93V; switches SRAM to backup battery during AC power loss. Use Value: Prevents data corruption during brownout by holding µP in reset until stable power returns and maintaining SRAM contents via BATT-to-OUT switchover. | Use Scenario: Remote environmental sensor node operating on primary DC supply with coin-cell backup. IC Role / Device Role / Timing Role: Monitors 3.0V system rail and secondary 2.5V analog sensor supply using RESET IN divider; triggers reset on either fault. Use Value: Dual-supply monitoring ensures accurate ADC readings and prevents firmware lockup due to analog rail collapse, while 15µA ICC extends coin-cell life beyond 5 years. |
| POS Terminal Power Management | Smart Meter Battery Backup |
Use Scenario: Retail point-of-sale terminal with mains power and supercapacitor backup. IC Role / Device Role / Timing Role: Detects 5.0V rail collapse and initiates controlled shutdown; uses OUT to sustain real-time clock and nonvolatile memory. Use Value: Active-low push-pull RESET guarantees immediate µP halt without pull-up dependency, and 1.2V operation allows graceful shutdown even as supercapacitor discharges to 1.8V. | Use Scenario: Electricity meter with lithium-thionyl chloride battery for 10-year backup. IC Role / Device Role / Timing Role: Supervises 3.3V microcontroller supply and monitors battery health via RESET IN voltage divider. Use Value: Factory-trimmed 2.93V threshold ensures consistent reset point across production units, while 150ms timeout prevents spurious resets during grid transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT29+T | Same 2.93V threshold and SOT23-6 package, but active-low open-drain RESET output | Requires external pull-up resistor; suitable where bus-sharing or wired-OR reset is needed | Select when system design mandates open-drain topology for multi-source reset arbitration |
| TPS3808G33DBVR | 3.3V fixed threshold, 350ms timeout, 2.5µA ICC, SOT23-6, no battery switchover or RESET IN | Lacks auxiliary reset input and battery management; limited to basic power monitoring | Choose for cost-sensitive, single-rail applications without backup power or secondary supply monitoring |
Compared with MAX6364HUT29+T, the MAX6364LUT29+T provides direct-drive reset capability eliminating BOM cost and layout area for pull-up resistors; versus TPS3808G33DBVR, it adds critical battery switchover and user-adjustable reset input-enabling dual-supply monitoring and SRAM retention in portable designs.
Availability
MAX6364LUT29+T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, and smart meters requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6361–MAX6364 family was designed specifically for microprocessor systems needing integrated power supervision, battery backup control, and flexible reset configuration in space-constrained portable equipment.
FAQ
What is the exact reset threshold voltage of the MAX6364LUT29+T?
The MAX6364LUT29+T has a factory-preset reset threshold of 2.93V, with ±1.5% tolerance over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and specified in the Electrical Characteristics table under "Reset Threshold" (VTH) for the "MAX636_UT29" suffix. It is optimized for reliable supervision of +3.0V and +3.3V power rails.
How does the RESET IN pin function on the MAX6364LUT29+T?
The RESET IN pin on the MAX6364LUT29+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 configure a custom reset threshold for a secondary power supply using a simple resistor divider (R1/R2) tied to VCC or another rail, enabling dual-supply monitoring in a single IC.
Does the MAX6364LUT29+T support battery backup switchover, and what are the conditions?
Yes, the MAX6364LUT29+T supports automatic battery backup switchover. It connects the BATT input to the OUT pin only when two conditions are simultaneously met: (1) VCC is below the 2.93V reset threshold, and (2) VCC is at least 20mV lower than VBATT. This 40mV hysteresis prevents oscillation during slow VCC decay. The device will not power up from BATT alone-initial VCC presence is required.
What is the output structure of the RESET pin on the MAX6364LUT29+T?
Unlike open-drain variants, the MAX6364LUT29+T features an active-low push-pull RESET output. This means the pin actively drives LOW during reset assertion and actively drives HIGH when released-eliminating the need for an external pull-up resistor. It can source up to 500µA and sink up to 1.6mA while maintaining VOL ≤ 0.4V, making it suitable for direct interface with µP reset inputs without additional components.
What is the minimum reset timeout period guaranteed for the MAX6364LUT29+T?
The MAX6364LUT29+T guarantees a minimum reset timeout period (tRP) of 150ms after VCC rises above the 2.93V threshold. This parameter is production-tested and specified across -40°C to +85°C. The timeout ensures the microprocessor has sufficient time to complete internal power-on reset sequencing and stabilize clocks before execution begins, meeting industry-standard reliability requirements for embedded systems.
MAX6364LUT29+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- 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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