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Analog Devices Inc./Maxim Integrated MAX6363HUT46+T
- Part No.:
- MAX6363HUT46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6363HUT46+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,232
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Product details
Overview
MAX6363HUT46+T from Maxim Integrated is a SOT23-6 battery-backed microprocessor supervisory circuit with factory-preset 4.63V reset threshold, active-low open-drain RESET output, and dedicated BATT ON indicator output. It monitors VCC supply voltage, provides automatic battery switchover to OUT when VCC drops below threshold, and asserts reset for ≥150ms after VCC recovery. Used in portable medical devices requiring reliable SRAM backup during brownout.
For engineers reviewing the MAX6363HUT46+T datasheet, MAX6363HUT46+T pinout, MAX6363HUT46+T application, or MAX6363HUT46+T equivalent, key selection criteria include guaranteed 1.2V operation, 4.63V ±1.5% reset threshold accuracy over -40°C to +85°C, battery-on status signaling, and 150ms minimum reset timeout with transient immunity up to 30µs at 100mV overdrive.
Technical Context
The MAX6363HUT46+T implements dual-path power routing: VCC powers OUT above reset threshold; when VCC falls below 4.63V and VBATT exceeds VCC by ≥20mV, an internal MOSFET connects BATT to OUT. The BATT ON output transitions high only in validated battery-backup mode (VCC < VTH and VCC < VBATT), with hysteresis preventing chatter during slow VCC decay.
Its reset logic combines three independent assertion sources: VCC undervoltage (4.63V threshold), manual reset via MR input (debounced internally), and watchdog timeout (not present on MAX6363 variant). Reset remains asserted for ≥150ms after any trigger clears, ensuring µP initialization stability. All outputs are open-drain with 20mA sink capability and 0.3V VOL at 1.6mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory preset, ±1.5% over -40°C to +85°C) - ensures reliable detection of +5V rail collapse before µP malfunction. |
| Operating Voltage | +1.2V minimum (VCC or VBATT) - supports ultra-low-power operation and battery backup down to single-cell Li-ion discharge end. |
| Reset Timeout | 150ms minimum - guarantees µP reset pulse duration sufficient for full internal state initialization across all process corners. |
| Supply Current | 15µA typical at VCC = 5.5V - enables multi-year battery life in always-on backup applications. |
| Battery Standby Current | 0.05µA max at -40°C to +85°C - minimizes self-discharge during long-term storage or standby. |
| VCC-to-OUT RON | 2.75Ω max at VCC = 4.75V, IOUT ≤150mA - limits voltage drop and power loss when sourcing SRAM or real-time clock. |
| Transient Immunity | 30µs maximum glitch duration at 100mV overdrive - prevents false resets from switching noise or ESD-induced supply dips. |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, RoHS-compliant +T suffix), footprint compatible with JEDEC MO-178AB, 1.6mm × 2.9mm × 1.1mm body height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Pulls low during VCC undervoltage, MR assertion, or reset timeout; requires external pull-up; drives µP /RESET input directly. |
| 2 - GND | Ground reference | Common return for VCC, VBATT, and all internal comparators; must be low-impedance connection to minimize noise coupling. |
| 3 - MR | Manual reset input | Logic-low assertion forces reset; internal 20kΩ pull-up to VCC eliminates need for external resistor; debounced internally. |
| 4 - VCC | Main supply input | Primary power source (1.2V–5.5V); powers internal circuitry and supplies OUT until switchover to battery occurs. |
| 5 - OUT | Power output | Switches between VCC and VBATT based on voltage comparison; delivers up to 150mA to SRAM or RTC; low RON preserves voltage margin. |
| 6 - BATT | Backup battery input | Accepts 1.2V–5.5V battery source; activates switchover when VBATT > VCC +20mV and VCC < 4.63V; draws <1µA in backup mode. |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Dedicated BATT ON pin asserts high only when both VCC < VTH and VBATT > VCC +20mV - provides unambiguous system-level battery-backup status for firmware monitoring. |
| Guaranteed 1.2V Operation | Full functionality (reset assertion, BATT ON, switchover) maintained down to 1.2V on either VCC or VBATT - enables use with aging batteries or low-VCC µPs. |
| 150ms Minimum Reset Timeout | Internally timed reset pulse persists ≥150ms after VCC recovery - meets JEDEC JESD8-12B requirement for 3.3V/2.5V µP power-up stabilization. |
| Power-Supply Transient Immunity | Immune to VCC glitches ≤30µs wide at 100mV overdrive - eliminates false resets from digital switching noise without external RC filtering. |
| Low Quiescent Current | 15µA typical ICC at 5.5V - extends shelf life and operational runtime in battery-critical applications like portable diagnostics. |
Applications
| Portable Medical Monitors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous ECG waveform capture with nonvolatile SRAM buffer during AC power interruption. IC Role / Device Role / Timing Role: Supervisory circuit providing seamless VCC-to-battery switchover and persistent reset hold to prevent SRAM corruption. Use Value: Ensures zero-data-loss transition with BATT ON signal enabling firmware to initiate safe shutdown sequence upon battery activation. |
Use Scenario: Remote environmental sensor node logging temperature/humidity to SRAM while powered by solar-charged Li-ion. IC Role / Device Role / Timing Role: Battery-backed power supervisor maintaining memory integrity during overnight battery-only operation. Use Value: 0.05µA battery standby current extends usable battery life beyond 5 years; 4.63V threshold matches nominal 5V regulator dropout point. |
| Point-of-Sale Terminals | Smart Utility Meters |
Use Scenario: Transaction rollback protection during mains power failure in retail payment terminals. IC Role / Device Role / Timing Role: Real-time power-fail detector asserting reset and enabling secure flash write abort before data corruption. Use Value: 150ms reset timeout aligns with NAND flash page-write timing; BATT ON signal triggers immediate EEPROM save of transaction state. |
Use Scenario: Tamper-resistant energy meter retaining billing registers and time-of-use data during grid outage. IC Role / Device Role / Timing Role: Dual-voltage monitor (VCC and VBATT) with hysteresis-controlled switchover to preserve metrology accuracy. Use Value: 40mV switchover hysteresis prevents oscillation during marginal VCC conditions; 1.2V operation supports deep battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6363HUT44+T | 4.38V reset threshold (vs. 4.63V), identical pinout/package/functionality | Suitable for systems using 4.5V nominal regulators where tighter margin against 4.3V brownout is required | Select when design operates near 4.5V rail with higher sensitivity to undershoot; same PCB layout and firmware interface. |
| TPS3808G33DBVR | 3.3V fixed threshold, no BATT ON output, 350ms reset timeout, 2.5µA quiescent current | Lacks battery switchover and status indication; optimized for low-IQ rather than backup control | Choose only if battery backup is unnecessary and ultra-low supply current dominates design priority over functional completeness. |
Compared with MAX6363HUT44+T, the MAX6363HUT46+T provides higher reset threshold margin for 5V systems; compared with TPS3808G33DBVR, it delivers complete battery management capability including switchover control and status signaling-critical for data retention in portable equipment.
Availability
MAX6363HUT46+T is available at Aetrix Electronics and suitable for portable medical monitors, industrial data loggers, and smart utility meters requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6363HUT46+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, medical, and communications applications.
The MAX6361–MAX6364 family was engineered specifically for battery-backed µP systems requiring reliable power-fail detection, SRAM backup, and deterministic reset behavior in space-constrained portable equipment.
FAQ
What is the exact reset threshold voltage of the MAX6363HUT46+T?
The MAX6363HUT46+T has a factory-preset reset threshold of 4.63V, with guaranteed tolerance of ±1.5% over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during production and documented in the Electrical Characteristics table of the MAX6361–MAX6364 datasheet Rev 4. The "46" suffix explicitly denotes the 4.63V variant within the MAX6363 family.
Does the MAX6363HUT46+T support battery switchover and how does it work?
Yes, the MAX6363HUT46+T supports automatic battery switchover. When VCC falls below 4.63V and VBATT exceeds VCC by at least 20mV, the device connects the BATT pin to the OUT pin via an internal MOSFET. Switchover hysteresis (40mV total) prevents oscillation during slow VCC decay. The BATT ON output goes high exclusively in this validated backup mode, providing unambiguous status feedback.
What is the function of the BATT ON pin on the MAX6363HUT46+T?
The BATT ON pin on the MAX6363HUT46+T is a dedicated open-drain output that asserts high only when the device is confirmed in battery-backup mode - i.e., when both VCC < 4.63V and VBATT > VCC +20mV. It provides a hardware-level flag for firmware to detect active battery power, enabling controlled data save operations or low-power mode entry without polling VCC or VBATT voltages.
Can the MAX6363HUT46+T operate with supply voltages below 2.5V?
Yes, the MAX6363HUT46+T operates down to +1.2V on either VCC or VBATT, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections. Its internal comparators, reset timer, and MOSFET driver remain fully functional at 1.2V, making it suitable for single-cell Li-ion or NiMH battery systems where voltage drops to 2.2V–2.5V under load and further during deep discharge.
Is the MAX6363HUT46+T pin-compatible with other members of the MAX6361–MAX6364 family?
Yes, all MAX6361–MAX6364 variants, including the MAX6363HUT46+T, share identical 6-pin SOT23 (U6-1) package and pinout. The only differences are functional: MAX6361 includes MR input, MAX6362 adds WDI, MAX6363 provides BATT ON, and MAX6364 features RESET IN. Thus, MAX6363HUT46+T can replace MAX6361HUT46+T or MAX6362HUT46+T on the same PCB if BATT ON functionality is required and MR/WDI signals are unused.
MAX6363HUT46+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- 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
MAX6363HUT46+T FAQ
1.How can I place an order for MAX6363HUT46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6363HUT46+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 MAX6363HUT46+T reliable?
The price and inventory of MAX6363HUT46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6363HUT46+T is usually 5 days.
3.What payment methods are accepted for MAX6363HUT46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6363HUT46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6363HUT46+T?
MAX6363HUT46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6363HUT46+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 MAX6363HUT46+T?
For technical support, including MAX6363HUT46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6363HUT46+T requirements.
6.How does Aetrix verify that MAX6363HUT46+T is sourced from the original manufacturer or authorized distributors?
All MAX6363HUT46+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 MAX6363HUT46+T meets industry standards.
7.What is the process for return or replacement of MAX6363HUT46+T?
All MAX6363HUT46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6363HUT46+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 MAX6363HUT46+T part is unused and in its original packaging.
Return procedure for MAX6363HUT46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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