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Analog Devices Inc./Maxim Integrated MAX6364PUT29+T
- Part No.:
- MAX6364PUT29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364PUT29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:748
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Product details
Overview
MAX6364PUT29+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 2.93V reset threshold, 150ms minimum reset timeout, and supports SRAM backup in brownout conditions. Used in portable/battery-powered equipment for reliable power-fail detection and system reset control.
For engineers reviewing the MAX6364PUT29+T datasheet, MAX6364PUT29+T pinout, MAX6364PUT29+T application, or MAX6364PUT29+T equivalent, key selection considerations include its 2.93V VTH accuracy over temperature, RESET IN comparator referenced to 1.235V, SOT23-6 package footprint, battery switchover hysteresis, and compatibility with 1.2V–5.5V VCC/VBATT operation.
Technical Context
The MAX6364PUT29+T implements a precision voltage-monitoring architecture with dual-supply capability: VCC powers normal operation while VBATT supplies OUT during brownout when VCC falls below 2.93V and VBATT exceeds VCC by ≥20mV. Its internal 1.235V reference enables externally programmable undervoltage detection via resistor divider on RESET IN.
It integrates a battery-switchover MOSFET (RON < 2.7Ω at VBATT = 2.8V), guarantees RESET/RESET validity down to 1.2V, and provides transient immunity against VCC glitches ≤30µs at 100mV overdrive. The device asserts reset on VCC fall, RESET IN low condition, or manual reset (not applicable here), with propagation delay <100µs over -40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH) | 2.93V ±1.5% - factory-trimmed for precise 3.0V rail monitoring with guaranteed accuracy across temperature. |
| Operating Voltage Range | +1.2V to +5.5V (VCC or VBATT) - supports ultra-low-voltage microcontrollers and Li+ battery-backed systems. |
| Reset Timeout Period | 150ms minimum - ensures µP completes power-up initialization before release from reset state. |
| Supply Current (ICC) | 11µA typical at VCC = 2.8V - enables multi-year battery life in always-on backup applications. |
| RESET IN Threshold | 1.235V ±5mV - stable internal reference enabling accurate secondary supply monitoring via external resistor divider. |
| Battery Switchover Hysteresis | 40mV (VBATT − VCC) - prevents oscillation during slow VCC decay near threshold crossing. |
| Output Type | Active-low open-drain RESET - compatible with standard µP reset inputs requiring pull-up; supports wired-OR configuration. |
Pinout & Package
Package: 6-pin SOT23 (U6-1, outline 21-0058), RoHS-compliant lead-free (+T suffix), -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 undervoltage, RESET IN low, or brownout; requires external pull-up for µP interface. |
| 2 - GND | Ground reference | Common return path for VCC, VBATT, and all internal circuitry; must be low-impedance connection. |
| 3 - RESET IN | Auxiliary reset input | Comparator input referenced to 1.235V; falling below threshold asserts reset; max leakage ±25nA enables high-R dividers. |
| 4 - VCC | Main supply input | Primary power source; powers internal logic and drives OUT until VCC drops below 2.93V. |
| 5 - OUT | Power output for SRAM or backup load | Switches between VCC and VBATT based on voltage comparison; delivers up to 150mA from VCC, 10mA from battery. |
| 6 - BATT | Backup battery input | Provides backup power to OUT when VCC fails; internal MOSFET connects BATT to OUT only if VBATT > VCC + 20mV. |
Key Features
| Feature | Design Value |
|---|---|
| User-adjustable RESET IN | 1.235V internal reference enables precise secondary supply monitoring (e.g., 4.60V via R1/R2 divider) without external components. |
| Battery switchover with hysteresis | 40mV automatic switching threshold prevents chatter during slow VCC decay and ensures clean transition to backup power. |
| Ultra-low supply current | 11µA typical ICC at 2.8V allows >10-year battery life in SRAM retention circuits powered solely by coin cell. |
| Guaranteed 1.2V operation | RESET/RESET remains valid down to 1.2V VCC or VBATT - supports next-generation low-voltage µPs and energy-harvesting systems. |
| VCC transient immunity | Immune to negative-going transients ≤30µs at 100mV overdrive - eliminates false resets in noisy industrial environments. |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
|
Use Scenario: Battery-powered glucose meters and ECG monitors retain SRAM data during main supply interruption. IC Role / Device Role / Timing Role: Supervisory IC monitors VCC, switches SRAM supply to backup battery, and asserts reset to halt processor during brownout. Use Value: Prevents data corruption and ensures deterministic restart after power recovery using 2.93V threshold aligned with 3.0V LDO output. |
Use Scenario: Remote environmental sensors log temperature/humidity continuously using backup power during AC outage. IC Role / Device Role / Timing Role: Provides fail-safe power switchover to Li+ battery and generates clean reset pulse to wake microcontroller from sleep. Use Value: 150ms reset timeout guarantees full µP initialization; 11µA ICC extends 200mAh coin cell life beyond 5 years in standby. |
| POS Terminals | Smart Meters |
|
Use Scenario: Retail point-of-sale terminals maintain transaction buffer integrity during brief AC dips or battery swap. IC Role / Device Role / Timing Role: Monitors 3.3V system rail and triggers reset if voltage sags below 2.93V; enables fast recovery without firmware corruption. Use Value: RESET IN input used to monitor auxiliary 5V analog supply, ensuring ADC calibration stability before measurement cycles begin. |
Use Scenario: Electricity meters retain time-of-use billing data during grid instability or meter replacement. IC Role / Device Role / Timing Role: Controls switchover from mains to supercapacitor backup and asserts reset to synchronize real-time clock recovery. Use Value: 40mV battery switchover hysteresis eliminates repeated switching during marginal VCC conditions common in aging power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT29+T | Same 2.93V VTH and SOT23-6 package, but active-high open-drain RESET output instead of active-low. | Requires µP with active-high reset input; incompatible with standard active-low reset designs without level-shifting. | Select when host µP reset pin expects high-active assertion and board layout accommodates different reset polarity logic. |
| TPS3808G33DBVR | 3.3V fixed reset threshold, 350ms timeout, 2.5µA ICC, SOT23-6 - no battery switchover or RESET IN functionality. | Limited to single-rail monitoring; lacks backup power management and auxiliary reset input capability. | Choose for cost-sensitive, non-battery-backed applications where only primary 3.3V rail supervision is required. |
Compared with MAX6364PUT29+T, the MAX6364HUT29+T offers identical monitoring accuracy and battery control but requires redesign of reset signal routing, while the TPS3808G33DBVR reduces quiescent current by 75% but sacrifices battery switchover and programmable reset input - making it suitable only for simpler, single-supply systems.
Availability
MAX6364PUT29+T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, smart meters, and battery-backed SRAM retention systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6364PUT29+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, mixed-signal, and power-management ICs for demanding industrial, automotive, and computing applications.
The MAX6361–MAX6364 family targets battery-backed microprocessor systems requiring reliable power monitoring, brownout protection, and seamless backup power switchover in space-constrained SOT23 packages.
FAQ
What is the exact reset threshold voltage of the MAX6364PUT29+T?
The MAX6364PUT29+T has a factory-preset 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" for the UT29 suffix. The MAX6364PUT29+T does not include watchdog, manual reset, or battery-on output functions - its distinguishing feature is the auxiliary RESET IN pin referenced to 1.235V.
How does the RESET IN pin function on the MAX6364PUT29+T?
The RESET IN pin on the MAX6364PUT29+T compares an external voltage to an internal 1.235V reference. When the voltage at RESET IN falls below 1.235V, the device asserts the active-low RESET output. Input leakage is ±25nA maximum, enabling use of high-value resistor dividers (e.g., R2 = 100kΩ, R1 = 273kΩ) to monitor secondary supplies such as 4.60V rails. The MAX6364PUT29+T uses this pin exclusively for programmable undervoltage detection.
What is the battery switchover behavior of the MAX6364PUT29+T?
The MAX6364PUT29+T switches OUT from VCC to VBATT when VCC falls below 2.93V *and* VBATT exceeds VCC by at least 20mV. It reverts to VCC when VCC rises 20mV above VBATT, providing 40mV hysteresis to prevent oscillation. The internal MOSFET's on-resistance is ≤2.7Ω at VBATT = 2.8V, supporting up to 10mA from battery. The MAX6364PUT29+T does not assert BATT ON (that function belongs to MAX6363 variants).
Can the MAX6364PUT29+T operate with a 1.2V supply?
Yes, the MAX6364PUT29+T guarantees full functionality - including RESET/RESET output validity, RESET IN comparator operation, and battery switchover control - down to 1.2V on either VCC or VBATT. Its supply current is only 11µA at 2.8V, and it maintains 150ms reset timeout accuracy across the entire +1.2V to +5.5V operating range. This makes the MAX6364PUT29+T suitable for ultra-low-voltage energy-harvesting and wearables applications.
What package type and RoHS status does the MAX6364PUT29+T use?
The MAX6364PUT29+T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058) with lead-free termination indicated by the "+T" suffix. It meets RoHS Directive 2011/65/EU and is rated for -40°C to +85°C operation. The device is supplied in tape-and-reel format with a minimum order quantity of 2500 pieces per reel, consistent with Maxim's standard SOT23 packaging for this family.
MAX6364PUT29+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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
MAX6364PUT29+T FAQ
1.How can I place an order for MAX6364PUT29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364PUT29+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 MAX6364PUT29+T reliable?
The price and inventory of MAX6364PUT29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364PUT29+T is usually 5 days.
3.What payment methods are accepted for MAX6364PUT29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364PUT29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364PUT29+T?
MAX6364PUT29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364PUT29+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 MAX6364PUT29+T?
For technical support, including MAX6364PUT29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364PUT29+T requirements.
6.How does Aetrix verify that MAX6364PUT29+T is sourced from the original manufacturer or authorized distributors?
All MAX6364PUT29+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 MAX6364PUT29+T meets industry standards.
7.What is the process for return or replacement of MAX6364PUT29+T?
All MAX6364PUT29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364PUT29+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 MAX6364PUT29+T part is unused and in its original packaging.
Return procedure for MAX6364PUT29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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