My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6363HUT26+T
- Part No.:
- MAX6363HUT26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363HUT26+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,683
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6363HUT26+T from Maxim Integrated is a SOT23-6 battery-backed microprocessor supervisory circuit with factory-preset 2.63V reset threshold, battery-on (BATT ON) output indicator, and active-low open-drain reset output. It monitors VCC supply down to +1.2V, provides automatic switchover to backup battery when VCC falls below threshold and VBATT > VCC, and guarantees RESET/RESET validity down to 1.2V. Used in portable/battery-powered equipment for SRAM power retention during brownout.
For engineers reviewing the MAX6363HUT26+T datasheet, MAX6363HUT26+T pinout, MAX6363HUT26+T application, or MAX6363HUT26+T equivalent, key selection criteria include guaranteed 150ms reset timeout, 2.63V ±1.5% threshold accuracy over -40°C to +85°C, battery-switchover hysteresis of 40mV, BATT ON logic-high assertion in backup mode, and SOT23-6 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6363HUT26+T implements a precision voltage comparator with internal 2.63V reference to monitor VCC against factory-trimmed threshold. When VCC drops below 2.63V and VBATT exceeds VCC by ≥20mV, it activates an internal MOSFET to connect BATT to OUT while asserting RESET and driving BATT ON high.
Its BATT ON output serves as a dedicated status flag indicating active battery-backup mode, distinct from RESET outputs. The device guarantees operation with VCC or VBATT as low as +1.2V, supports up to 150mA load from VCC and 10mA from battery, and features 150ms minimum reset timeout with power-up/power-down delay matching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% (factory-trimmed; enables precise monitoring of +2.5V systems) |
| Reset Timeout Period | 150ms minimum (ensures µP completes power-up initialization before release) |
| Operating Supply Range | +1.2V to +5.5V (supports single-cell Li+ and multi-rail embedded supplies) |
| Battery Switchover Hysteresis | 40mV (prevents oscillation during slow VCC decay near threshold) |
| Supply Current (VCC) | 15µA typical at +25°C (enables multi-year battery life in backup mode) |
| BATT ON Output Logic | Active-high open-drain (signals backup mode to host controller without loading) |
| VCC to OUT On-Resistance | 2.7Ω typical at VCC = 2.38V (minimizes voltage drop under 25mA load) |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, RoHS-compliant +T suffix). Compact 2.9mm × 1.6mm footprint with 0.95mm height, optimized for PCB area-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, manual reset, or watchdog timeout; requires external pull-up |
| 2: GND | Ground reference | Common return path for VCC, BATT, and all internal circuits; must be low-impedance |
| 3: OUT | Power output | Sources from VCC when valid; switches to BATT during brownout; powers SRAM or real-time clock |
| 4: VCC | Main supply input | Primary power source; reset asserted when falling below 2.63V; powers internal circuitry |
| 5: BATT | Backup battery input | Connects to Li+ or coin cell; supplies OUT only when VCC < (VBATT − 20mV); draws ≤0.05µA standby |
| 6: BATT ON | Battery-backup status indicator | Drives high only when device is actively sourcing from BATT; used for system-level battery-mode detection |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Dedicated BATT ON pin provides unambiguous logic-high signal during battery-backup operation, eliminating need for software polling or external comparators |
| Guaranteed 1.2V Operation | RESET/RESET outputs remain functional down to VCC = 1.2V, ensuring reliable reset assertion even during deep brownout conditions |
| 40mV Switchover Hysteresis | Prevents chattering during gradual VCC decay by requiring 20mV rise above VBATT to re-engage VCC, improving system stability |
| Low 15µA Supply Current | Minimizes quiescent drain on primary supply, extending battery life in always-on monitoring applications |
| 150ms Minimum Reset Timeout | Meets JEDEC JESD78 requirements for µP reset hold time, preventing premature code execution during power ramp |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Wearable ECG monitor operating from single 3.0V Li-ion cell with SRAM-based waveform buffer. IC Role / Device Role / Timing Role: Supervisory IC providing VCC brownout detection, automatic battery switchover to preserve SRAM contents, and BATT ON flag for low-power mode entry. Use Value: Ensures zero-data-loss memory retention during battery replacement or transient discharge; BATT ON signal triggers firmware to disable non-critical peripherals. |
Use Scenario: Remote environmental sensor node logging temperature/humidity to SPI FRAM, powered by solar-charged LiFePO₄. IC Role / Device Role / Timing Role: Power supervisor detecting solar panel output collapse, enabling seamless transition to backup battery and asserting reset to halt corrupted write cycles. Use Value: Prevents FRAM corruption during intermittent power; 150ms reset timeout allows clean MCU shutdown before SRAM backup activation. |
| POS Terminals | Smart Meters |
Use Scenario: Battery-backed retail terminal with real-time clock and transaction log memory, subject to AC mains dropout. IC Role / Device Role / Timing Role: Monitors 3.3V rail, asserts reset on undervoltage, and activates BATT ON to enable RTC backup power path via MOSFET gate control. Use Value: Guarantees atomic transaction logging continuity; 2.63V threshold matches 3.3V LDO dropout margin, avoiding false resets during load transients. |
Use Scenario: Electricity meter with metrology ASIC and tamper-detection EEPROM, requiring secure power-fail data commit. IC Role / Device Role / Timing Role: Detects 5.0V supply collapse, triggers µP reset, and signals BATT ON to initiate EEPROM write-protection sequence before capacitor hold-up expires. Use Value: Enables deterministic 150ms window for critical NVM writes; BATT ON assertion synchronizes hardware-enforced write lock with backup power availability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT29+T | Factory-set 2.93V reset threshold (vs. 2.63V); identical pinout, timing, and BATT ON functionality | Targets +3.0V or +3.3V systems where higher threshold prevents nuisance resets during LDO ripple | Select when system VCC nominal is ≥3.0V and brownout margin requires tighter threshold alignment |
| TPS3808G125DBVR | 2.5V fixed threshold, no BATT ON output, push-pull reset, 350ms timeout; SOT23-6 package | Lacks battery switchover and status indication; suited for simple reset-only applications without backup power | Choose only if battery backup is unnecessary and longer reset timeout is acceptable for µP initialization |
Compared with MAX6363HUT26+T, the MAX6363HUT29+T offers higher reset threshold for improved noise immunity in 3.0V systems but same battery management capability, while the TPS3808G125DBVR provides basic reset supervision without battery-handling features-making it unsuitable for SRAM retention use cases requiring BATT ON signaling.
Availability
MAX6363HUT26+T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, and smart meters requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6363HUT26+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 management, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX6361–MAX6364 family was engineered specifically for battery-backed µP systems requiring reliable power-fail detection, SRAM retention, and explicit backup-mode status signaling-addressing design challenges in portable and mission-critical embedded equipment.
FAQ
What is the exact reset threshold voltage of the MAX6363HUT26+T?
The MAX6363HUT26+T has a factory-trimmed reset threshold of 2.63V 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) for the UT26 suffix. It is designed to reliably monitor +2.5V supply rails while accommodating typical LDO dropout and board-level tolerances.
Does the MAX6363HUT26+T provide battery switchover functionality, and how does it work?
Yes, the MAX6363HUT26+T provides automatic battery switchover. When VCC falls below 2.63V and VBATT exceeds VCC by at least 20mV, the device connects the BATT pin to the OUT pin via an internal MOSFET. This ensures uninterrupted power to connected SRAM or RTC. The switchover includes 40mV hysteresis to prevent oscillation during slow VCC decay, and the BATT ON pin goes high to signal active battery mode.
What is the function of the BATT ON pin on the MAX6363HUT26+T?
The BATT ON pin on the MAX6363HUT26+T is an active-high open-drain output that asserts logic high only when the device is actively sourcing power from the backup battery (i.e., during battery-backup mode). It remains low during normal VCC operation. This dedicated status signal enables system firmware or external logic to detect backup activation without polling RESET or measuring voltages, simplifying power-mode management.
Can the MAX6363HUT26+T operate with supply voltages below 2.63V?
Yes, the MAX6363HUT26+T operates with VCC or VBATT as low as +1.2V. Its internal circuitry-including the reset comparator, BATT ON driver, and output MOSFET control-remains fully functional down to this voltage. The RESET and RESET outputs are guaranteed to meet logic thresholds even at 1.2V, ensuring reliable µP reset assertion during deep brownout conditions where other supervisors may fail.
What is the minimum reset timeout period for the MAX6363HUT26+T, and why is it important?
The MAX6363HUT26+T guarantees a minimum reset timeout period of 150ms after VCC rises above the 2.63V threshold. This duration ensures the microprocessor completes power-up stabilization, clock acquisition, and internal register initialization before reset release. It meets JEDEC JESD78 reliability requirements and prevents erratic behavior caused by premature code execution during marginal power ramp conditions.
MAX6363HUT26+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:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6363HUT26+T FAQ
1.How can I place an order for MAX6363HUT26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363HUT26+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 MAX6363HUT26+T reliable?
The price and inventory of MAX6363HUT26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363HUT26+T is usually 5 days.
3.What payment methods are accepted for MAX6363HUT26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363HUT26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363HUT26+T?
MAX6363HUT26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363HUT26+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 MAX6363HUT26+T?
For technical support, including MAX6363HUT26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363HUT26+T requirements.
6.How does Aetrix verify that MAX6363HUT26+T is sourced from the original manufacturer or authorized distributors?
All MAX6363HUT26+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 MAX6363HUT26+T meets industry standards.
7.What is the process for return or replacement of MAX6363HUT26+T?
All MAX6363HUT26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363HUT26+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 MAX6363HUT26+T part is unused and in its original packaging.
Return procedure for MAX6363HUT26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6363HUT26+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
