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Analog Devices Inc./Maxim Integrated MAX6364LUT26
- Part No.:
- MAX6364LUT26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364LUT26.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,447
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Product details
Overview
MAX6364LUT26 from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary adjustable reset input, battery switchover, and precision 2.63V reset threshold. It operates from +1.2V supply, delivers up to 150mA from VCC or backup battery, asserts active-low push-pull RESET for ≥150ms after power-up, and supports SRAM backup in brownout conditions. Used in portable instrumentation and industrial controllers requiring reliable power monitoring.
For engineers reviewing the MAX6364LUT26 datasheet, MAX6364LUT26 pinout, MAX6364LUT26 application, or MAX6364LUT26 equivalent, this page provides verified functional identity, SOT23-6 package mapping, reset timing behavior, battery switchover hysteresis, and direct alternatives with documented output structure and threshold differences.
Technical Context
The MAX6364LUT26 integrates a precision 1.235V internal reference for its RESET IN comparator, enabling user-configurable undervoltage detection independent of VCC threshold. Its battery switchover logic requires both VCC < VTH (2.63V) and VCC < VBATT − 0.15V before connecting BATT to OUT, with 40mV hysteresis to prevent oscillation during slow VCC decay.
RESET assertion is triggered by VCC falling below 2.63V, MR (not present on MAX6364), or RESET IN falling below 1.235V. The active-low push-pull RESET output guarantees valid logic levels down to 1.2V supply and maintains reset for ≥150ms after VCC recovery - a fixed timeout unaffected by temperature or supply variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% - precise brownout detection for +2.5V systems with guaranteed margin over 2.5V nominal rail |
| Operating Voltage | +1.2V to +5.5V - enables operation directly from single-cell Li-ion or NiMH batteries without LDO |
| Reset Timeout | 150ms minimum - ensures µP completes full power-up initialization before release |
| Supply Current | 11µA at VCC = 2.8V - ultra-low quiescent draw extends battery life in always-on backup mode |
| Battery Switchover | VCC < VBATT − 0.15V required - prevents premature battery engagement during transient dips |
| RESET IN Threshold | 1.235V ±5mV - stable reference for external voltage divider-based secondary supply monitoring |
| Output Type | Active-low push-pull - drives µP reset pin directly without external pull-up; sinks 1.6mA at VCC ≥ 2.1V |
Pinout & Package
SOT23-6 package with 1.6mm × 2.9mm footprint, 0.95mm height, and standard gull-wing leads. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Primary return path for all internal circuits and output drivers; must be low-impedance connection |
| VCC | Main supply input | Power source for internal logic and primary output driver; powers OUT when above 2.63V |
| BATT | Backup battery input | Connects to lithium or alkaline cell; supplies OUT only when VCC falls below switchover threshold |
| OUT | Power output | Switches between VCC and BATT; sources up to 150mA from VCC or 10mA from BATT (VBATT ≥ 2.25V) |
| RESET | Active-low reset output | Push-pull driver asserts low during fault; releases high after 150ms timeout; compatible with TTL/CMOS inputs |
| RESET IN | Auxiliary reset input | Comparator input referenced to 1.235V; falling edge below threshold forces immediate reset assertion |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.63V reset threshold | Eliminates external resistor divider; reduces BOM count and layout area in space-constrained designs |
| 1.235V internal reference for RESET IN | Enables accurate secondary supply monitoring using only two external resistors - no external reference IC needed |
| 150ms fixed reset timeout | Guarantees µP reset hold time across temperature and voltage; removes need for RC timing network calibration |
| 1.2V minimum operating voltage | Supports direct connection to single-cell LiFePO₄ (2.5–3.6V) or NiMH (0.9–1.4V/cell) without pre-regulation |
| 40mV switchover hysteresis | Prevents rapid toggling between VCC and BATT during slow VCC ramp-down, protecting SRAM data integrity |
Applications
| Portable Data Loggers | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging temperature/humidity every 10 seconds with SRAM buffer. IC Role / Device Role / Timing Role: Supervisory controller managing VCC brownout detection, automatic BATT-to-OUT switchover, and 150ms µP reset hold during power loss. Use Value: Prevents SRAM corruption during 2.5V rail collapse; enables >72-hour runtime on CR2032 via 11µA quiescent current. | Use Scenario: DIN-rail mounted analog input module with isolated 24V DC supply and local microcontroller. IC Role / Device Role / Timing Role: Power-fail detector asserting reset before 24V rail drops below 20V, while RESET IN monitors auxiliary 5V LDO output. Use Value: Dual-threshold supervision ensures deterministic shutdown before ADC reference drift; 1.235V RESET IN detects LDO failure before system lockup. |
| Medical Infusion Pumps | Rugged Handheld Testers |
Use Scenario: Safety-critical infusion device with dual power sources (main AC adapter + internal Li-ion) and nonvolatile memory. IC Role / Device Role / Timing Role: Fail-safe supervisor triggering controlled shutdown sequence upon main supply loss, then enabling battery-backed real-time clock and alarm circuitry. Use Value: 40mV switchover hysteresis avoids false battery engagement during EMI-induced VCC glitches; 2.63V threshold matches 2.5V logic rail tolerance. | Use Scenario: Field-deployable multimeter with auto-ranging, Bluetooth LE, and rechargeable battery pack. IC Role / Device Role / Timing Role: System-level power manager detecting USB power removal, initiating graceful firmware save to flash, and asserting reset before brownout. Use Value: 150ms reset timeout synchronizes with flash write completion; 1.2V min operating voltage allows operation down to 1.25V battery cell voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364LUT29 | 2.93V factory-set reset threshold; identical pinout, timing, and RESET IN functionality | Targeted at +3.0V or +3.3V systems where higher trip point prevents nuisance resets during nominal rail ripple | Select when system VCC nominal is ≥3.0V and 2.93V threshold provides better noise margin than 2.63V |
| TPS3808G12DBVR | 1.2V reset threshold, open-drain output, no battery switchover or RESET IN input | Designed for basic reset-only functions in low-voltage logic; lacks backup power management capability | Choose only if battery backup and auxiliary reset monitoring are unnecessary and 1.2V threshold suffices |
Compared with MAX6364LUT26, MAX6364LUT29 offers higher reset immunity in 3V systems but same supervision architecture, while TPS3808G12DBVR provides simpler reset-only functionality without battery control or adjustable input - making it unsuitable for SRAM backup or multi-rail monitoring use cases.
Availability
MAX6364LUT26 is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC modules, medical infusion pumps, and rugged handheld testers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6364LUT26 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 demanding industrial, medical, and communications applications.
The MAX636x family targets battery-backed microprocessor systems needing integrated reset, power-fail warning, and seamless backup switchover - optimized for minimal board space and ultra-low quiescent current in portable and remote equipment.
FAQ
What is the exact reset threshold voltage of the MAX6364LUT26 and how tightly is it specified?
The MAX6364LUT26 has a factory-trimmed reset threshold of 2.63V with ±1.5% tolerance over –40°C to +85°C. This value is laser-trimmed during production and guaranteed in the Electrical Characteristics table of the official datasheet. The 2.63V threshold is specifically selected to provide robust margin above common +2.5V logic rails while avoiding false triggers from typical supply ripple. No external components affect this threshold - it is fully internal and calibrated.
Does the MAX6364LUT26 support battery backup switchover, and what are the exact conditions for activation?
Yes, the MAX6364LUT26 supports automatic battery backup switchover. Activation requires two simultaneous conditions: VCC must fall below the 2.63V reset threshold, and VCC must also drop at least 0.15V below VBATT. Once engaged, the internal MOSFET connects BATT to OUT, supplying up to 10mA (at VBATT ≥ 2.25V). The 40mV hysteresis (0.15V + 0.25V) prevents oscillation during slow VCC decay. The MAX6364LUT26 does not power up from BATT alone - initial startup requires VCC.
What is the function and electrical specification of the RESET IN pin on the MAX6364LUT26?
The RESET IN pin on the MAX6364LUT26 is an auxiliary reset input compared to an internal 1.235V reference. When the voltage at RESET IN falls below 1.235V ±5mV, the device immediately asserts RESET regardless of VCC level. This pin draws only ±25nA leakage current and accepts overdrive pulses as short as 1.5µs. It is designed for use with external resistor dividers to monitor secondary supplies - for example, a 5V LDO can be scaled to 1.235V using a 1:3.04 ratio. The MAX6364LUT26 uses this input to add fail-safe redundancy beyond primary VCC supervision.
What output type does the MAX6364LUT26 provide, and how does it interface with a microprocessor reset pin?
The MAX6364LUT26 provides an active-low push-pull RESET output. It actively drives LOW during reset (VOL ≤ 0.4V at 1.6mA sink) and HIGH when released (VOH ≥ 0.8·VCC at 500µA source), eliminating the need for an external pull-up resistor. This output is fully compatible with standard TTL and CMOS microprocessor reset inputs, including those requiring driven-high release. The push-pull structure ensures fast, clean edges and robust noise immunity - critical for reliable boot in electrically noisy industrial environments. The MAX6364LUT26 RESET remains asserted for ≥150ms after VCC rises above 2.63V.
Can the MAX6364LUT26 operate from a single-cell lithium battery, and what is its minimum supply voltage?
Yes, the MAX6364LUT26 can operate directly from a single-cell lithium battery (e.g., LiCoO₂ or LiFePO₄). Its absolute minimum operating voltage is +1.2V - verified across –40°C to +85°C - allowing uninterrupted function down to end-of-discharge battery voltages. At 1.2V, the device maintains valid RESET output levels, 150ms timeout accuracy, and RESET IN comparator operation. Supply current is only 15µA at VCC = 1.2V, maximizing battery service life. The MAX6364LUT26 does not require an LDO or charge pump, simplifying power architecture in compact portable designs.
MAX6364LUT26 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:
- 2.63V
- 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-23-6
MAX6364LUT26 FAQ
1.How can I place an order for MAX6364LUT26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364LUT26 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 MAX6364LUT26 reliable?
The price and inventory of MAX6364LUT26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364LUT26 is usually 5 days.
3.What payment methods are accepted for MAX6364LUT26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364LUT26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364LUT26?
MAX6364LUT26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364LUT26 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 MAX6364LUT26?
For technical support, including MAX6364LUT26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364LUT26 requirements.
6.How does Aetrix verify that MAX6364LUT26 is sourced from the original manufacturer or authorized distributors?
All MAX6364LUT26 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 MAX6364LUT26 meets industry standards.
7.What is the process for return or replacement of MAX6364LUT26?
All MAX6364LUT26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364LUT26, 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 MAX6364LUT26 part is unused and in its original packaging.
Return procedure for MAX6364LUT26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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