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Analog Devices Inc./Maxim Integrated MAX6363PUT29-T
- Part No.:
- MAX6363PUT29-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363PUT29-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,788
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Product details
Overview
MAX6363PUT29-T from Maxim Integrated is a SOT23-6 supervisory IC for microprocessor power monitoring and battery switchover, featuring factory-preset 2.93V reset threshold, active-low open-drain RESET output, and dedicated BATT ON indicator output. It operates from +1.2V supply, guarantees RESET/RESET validity down to 1.2V, and delivers 150ms minimum reset timeout - used in portable/battery-powered equipment to preserve SRAM during brownout.
For engineers reviewing the MAX6363PUT29-T datasheet, MAX6363PUT29-T pinout, MAX6363PUT29-T application, or MAX6363PUT29-T equivalent, key selection criteria include its 2.93V precision reset threshold, battery-on status signaling capability, SOT23-6 footprint compatibility, and guaranteed 1.2V operation for low-voltage systems.
Technical Context
The MAX6363PUT29-T implements a dual-supply switchover architecture with internal MOSFET control between VCC and BATT inputs, activating battery backup only when VCC falls below both the 2.93V reset threshold and VBATT (with 40mV hysteresis). Its BATT ON output asserts high exclusively in battery-backup mode, providing unambiguous system-level power-source status indication.
It integrates a precision voltage comparator referenced to an internal bandgap, supports reset assertion on VCC undervoltage, and maintains guaranteed reset timing (≥150ms) across -40°C to +85°C. The device draws ≤35µA supply current at VCC = 3.6V and exhibits ≤0.4V RESET output low voltage at 3.2mA sink load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% - precise undervoltage detection for +3.0V/3.3V rails without external resistors |
| Supply Voltage Range | +1.2V to +5.5V - enables operation directly from single-cell Li+ or NiMH batteries |
| Reset Timeout Period | 150ms minimum - ensures µP initialization completes before release from reset |
| Supply Current | 35µA at VCC = 3.6V - ultra-low quiescent consumption for long battery life |
| BATT ON Output | Active-high logic signal - directly indicates battery-backup mode to host controller or LED driver |
| RESET Output Type | Active-low open-drain - allows wired-OR configuration and flexible pull-up voltage selection |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
Package: 6-pin SOT23 (U6-1), 1.6mm × 2.9mm footprint, RoHS-compliant lead-free (-T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, manual reset, or power failure; requires external pull-up |
| 2: GND | Ground reference | Common return path for VCC, BATT, and output circuits; must be low-impedance |
| 3: MR | Manual reset input | Logic-low assertion forces reset; internal 20kΩ pull-up to VCC; debounced internally |
| 4: VCC | Main supply input | Primary power source; powers internal circuitry and supplies OUT when above reset threshold |
| 5: OUT | Power output | Switches between VCC and BATT based on voltage comparison; sources up to 150mA |
| 6: BATT | Backup battery input | Secondary power source; connects to OUT only when VCC < VBATT − 20mV and VCC < 2.93V |
Key Features
| Feature | Design Value |
|---|---|
| Battery-on status indicator | Dedicated BATT ON output provides real-time, unambiguous notification of battery-backup activation |
| Precision 2.93V reset threshold | Factory-trimmed ±1.5% tolerance eliminates need for external resistor divider calibration |
| 1.2V minimum operating voltage | Enables direct interface with low-voltage battery chemistries including single-cell Li+ |
| 150ms guaranteed reset timeout | Ensures reliable µP initialization across full temperature range without external timing components |
| Ultra-low 35µA supply current | Extends battery life in always-on portable instrumentation and remote sensors |
Applications
| Portable Medical Monitors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG/SpO₂ monitoring powered by coin-cell or Li+ battery with main rail backup. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and switches SRAM to battery during AC loss; BATT ON triggers low-power firmware state. Use Value: Prevents data corruption during power transitions and enables deterministic wake-from-backup behavior. | Use Scenario: Remote environmental sensor node logging temperature/humidity to nonvolatile memory. IC Role / Device Role / Timing Role: Monitors 3.0V regulator output; asserts reset if voltage sags below 2.93V; BATT ON enables backup power management logic. Use Value: Guarantees clean µC reset and preserves RAM contents during intermittent solar charging gaps. |
| POS Terminal Battery Backup | Smart Meter Real-Time Clock Support |
Use Scenario: Point-of-sale terminal with supercapacitor or Li-ion backup maintaining transaction buffer during mains outage. IC Role / Device Role / Timing Role: Detects 5.0V rail collapse and switches critical SRAM to backup; BATT ON disables nonessential peripherals. Use Value: Eliminates need for discrete power-fail comparators and reduces BOM count by integrating switchover control. | Use Scenario: Electricity meter retaining timekeeping and tariff data during extended grid failure. IC Role / Device Role / Timing Role: Supplies regulated 3.3V to RTC/SRAM; BATT ON signals MCU to enter ultra-low-power clock-only mode. Use Value: Reduces backup current to <1µA (VBATT = 2.8V) while ensuring deterministic power-source handoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT29-T | Same 2.93V threshold and BATT ON function, but uses push-pull RESET output instead of open-drain | Requires no external pull-up; incompatible with wired-OR reset bus topologies | Select when driving a single µP reset pin without shared reset lines |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no BATT ON output, 350ms reset timeout, higher 12µA typical ICC | Lacks battery switchover signaling; suited for simple reset-only applications without backup power awareness | Select when only basic reset supervision is needed and battery status indication is handled externally |
Compared with MAX6363PUT29-T, MAX6363HUT29-T offers push-pull drive convenience but sacrifices bus-sharing flexibility, while TPS3808G33DBVR provides longer reset hold time and lower ICC at the cost of losing battery-status feedback - making MAX6363PUT29-T uniquely suited for systems requiring explicit backup-mode awareness.
Availability
MAX6363PUT29-T is available at Aetrix Electronics and suitable for portable medical monitors, industrial data loggers, POS terminals, and smart meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX6363PUT29-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 industrial, computing, and communications applications.
The MAX6361–MAX6364 family was developed specifically for low-power µP systems needing integrated reset, battery switchover, and power-fail warning - targeting portable, battery-backed, and energy-conscious embedded platforms.
FAQ
What is the exact reset threshold voltage of the MAX6363PUT29-T?
The MAX6363PUT29-T has a factory-preset reset threshold of 2.93V, with guaranteed tolerance of ±1.5% over temperature (−40°C to +85°C). This value is laser-trimmed during production and does not require external components. The threshold is specified in the Electrical Characteristics table under "Reset Threshold" with MIN/TYP/MAX values of 2.85V/2.93V/3.00V.
Does the MAX6363PUT29-T provide battery switchover functionality?
Yes, the MAX6363PUT29-T automatically switches the OUT pin from VCC to BATT when VCC falls below both the 2.93V reset threshold and VBATT minus 20mV. It incorporates internal MOSFET control with 40mV hysteresis to prevent oscillation during slow VCC decay. The switchover occurs without external circuitry and supports up to 150mA load current from VCC or battery.
What is the purpose of the BATT ON output on the MAX6363PUT29-T?
The BATT ON output on the MAX6363PUT29-T is an active-high signal that asserts only when the device is actively supplying power from the BATT pin to the OUT pin - i.e., during confirmed battery-backup mode. It is electrically isolated from reset assertion timing and provides unambiguous system-level status for firmware decisions, LED indicators, or peripheral power gating.
Can the MAX6363PUT29-T operate from a single-cell lithium battery?
Yes, the MAX6363PUT29-T operates from supply voltages as low as +1.2V, making it compatible with discharged single-cell Li+ (2.7V–4.2V), LiFePO₄ (2.0V–3.6V), or NiMH (0.9V–1.4V/cell) batteries. Its guaranteed RESET/RESET validity down to 1.2V ensures reliable reset signaling even at end-of-discharge, and its 35µA typical supply current extends usable battery life significantly.
What package type and footprint does the MAX6363PUT29-T use?
The MAX6363PUT29-T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058), measuring 1.6mm × 2.9mm with 0.95mm pitch. It is RoHS-compliant and lead-free (indicated by the "-T" suffix). The pinout matches standard SOT23-6 layouts, and land pattern 90-0175 is recommended per Maxim's package documentation.
MAX6363PUT29-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:
- 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
MAX6363PUT29-T FAQ
1.How can I place an order for MAX6363PUT29-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363PUT29-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 MAX6363PUT29-T reliable?
The price and inventory of MAX6363PUT29-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363PUT29-T is usually 5 days.
3.What payment methods are accepted for MAX6363PUT29-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363PUT29-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363PUT29-T?
MAX6363PUT29-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363PUT29-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 MAX6363PUT29-T?
For technical support, including MAX6363PUT29-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363PUT29-T requirements.
6.How does Aetrix verify that MAX6363PUT29-T is sourced from the original manufacturer or authorized distributors?
All MAX6363PUT29-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 MAX6363PUT29-T meets industry standards.
7.What is the process for return or replacement of MAX6363PUT29-T?
All MAX6363PUT29-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363PUT29-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 MAX6363PUT29-T part is unused and in its original packaging.
Return procedure for MAX6363PUT29-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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