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Analog Devices Inc./Maxim Integrated MAX6367LKA23
- Part No.:
- MAX6367LKA23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6367LKA23.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,209
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Product details
Overview
MAX6367LKA23 from Maxim Integrated is a low-power microprocessor supervisory circuit with battery-backup control, chip-enable gating, and BATT ON indicator output. It monitors VCC supply (1.2V–5.5V), asserts reset when VCC falls below 2.32V, switches OUT to backup battery during brownout, and drives BATT ON high in battery mode. Used in portable equipment, POS terminals, and industrial controllers requiring reliable power-fail response.
For engineers reviewing the MAX6367LKA23 datasheet, MAX6367LKA23 pinout, MAX6367LKA23 application, or MAX6367LKA23 equivalent, this page delivers verified functional identity, exact reset threshold (2.32V), BATT ON behavior, SOT23-8 package mapping, and two confirmed alternative parts for battery-backed µP supervision.
Technical Context
The MAX6367LKA23 integrates a precision voltage monitor, bidirectional VCC/BATT switchover MOSFET, active-high push-pull BATT ON output, and CE signal gating logic. Its reset generator guarantees RESET assertion down to 1.2V VCC or VBATT and enforces a minimum 150ms timeout after VCC recovery.
Unlike MAX6365/66/68 variants, MAX6367LKA23 provides dedicated BATT ON status indication-not manual reset, watchdog, or auxiliary reset input-and uses open-drain active-low RESET output with 0.3V VOL at 1.6mA sink current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (min), 2.38V (max); ensures reliable detection of +2.5V supply brownout before system failure |
| Supply Voltage Range | 1.2V to 5.5V; supports operation directly from single-cell Li-ion or coin-cell batteries |
| Quiescent Current | 10µA typical; enables multi-year battery life in always-on backup applications |
| BATT ON Output | Push-pull high-state indicator; sinks 3.2mA at 0.4V saturation, signals active battery mode without external pull-up |
| Reset Timeout Period | 150ms minimum; guarantees µP initialization completes before release from reset |
| VCC-to-OUT On-Resistance | 4.6Ω at 2.38V VCC, 25mA load; minimizes voltage drop during main-supply operation |
| Battery-Switchover Threshold | VCC − VBATT ≤ −20mV; prevents oscillation during slow VCC decay with 40mV hysteresis |
Pinout & Package
MAX6367LKA23 is housed in an 8-pin SOT23-8 package (2.9mm × 1.6mm × 1.1mm), surface-mount, RoHS-compliant, with gull-wing leads and thermal pad not connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, brownout, or power-down; requires external pull-up for logic-level compatibility |
| 2 CE IN | Chip-enable input | Directly gates CE signal to SRAM; disabled during reset to prevent write corruption |
| 3 GND | Ground reference | Common return for VCC, BATT, and signal paths; must be low-impedance for noise immunity |
| 4 BATT ON | Battery-on status indicator | Push-pull output driven high only when OUT is sourced from BATT; no external components needed |
| 5 VCC | Main supply input | Primary power source (1.2V–5.5V); monitored for reset generation and switchover control |
| 6 OUT | Regulated output | Supplies up to 150mA to SRAM; auto-switches between VCC and BATT based on voltage comparison |
| 7 BATT | Backup battery input | Accepts 2.0V–5.5V; powers OUT when VCC drops below threshold and VBATT > VCC + 20mV |
| 8 CE OUT | Chip-enable output | Gated version of CE IN; held low for 12µs after reset assertion to complete ongoing memory access |
Key Features
| Feature | Design Value |
|---|---|
| Battery-On Output Indicator | Dedicated push-pull BATT ON pin confirms battery-backup mode without software polling or external logic |
| On-Board Chip-Enable Gating | 1.5ns propagation delay prevents SRAM write corruption during power failure by disabling CE path within reset window |
| Ultra-Low Quiescent Current | 10µA typical ICC enables >10-year shelf life in battery-backed real-time clock or metering applications |
| VCC/BATT Switchover Control | Internal MOSFET with 4.6Ω on-resistance at 2.38V ensures <100mV dropout during VCC-to-BATT transition |
| Reset Valid Down to 1.2V | Guaranteed RESET assertion even when VCC or VBATT sags to 1.2V-critical for low-voltage LiFePO₄ or supercapacitor backup |
Applications
| Portable Medical Monitors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered ECG or glucose meter retains real-time clock and calibration data during AC power loss or battery swap. IC Role / Device Role / Timing Role: MAX6367LKA23 monitors main supply, switches SRAM to backup cell, and asserts BATT ON to trigger low-power firmware state save. Use Value: Prevents data loss during 200ms brownout windows; BATT ON signal enables deterministic firmware response without polling. | Use Scenario: DIN-rail mounted PLC maintains volatile I/O configuration and last-scan state during factory line power interruption. IC Role / Device Role / Timing Role: MAX6367LKA23 gates CE to onboard SRAM, asserts reset to halt CPU execution, and signals battery mode via BATT ON to isolate fieldbus communication. Use Value: Eliminates need for external supervisor + discrete MOSFET + status LED; reduces BOM count by 3 components. |
| Retail Point-of-Sale Terminals | Smart Energy Meters |
Use Scenario: Credit card terminal preserves transaction log and encryption keys during brief grid outage or battery depletion. IC Role / Device Role / Timing Role: MAX6367LKA23 detects +3.3V rail collapse, enables backup power to secure memory, and activates BATT ON to disable non-critical peripherals. Use Value: Meets PCI PTS 6.0 requirement for zero-data-loss power fail; 150ms reset timeout satisfies ARM Cortex-M boot timing. | Use Scenario: Electricity meter retains time-of-use tariff data and tamper logs during mains failure or lithium primary cell exhaustion. IC Role / Device Role / Timing Role: MAX6367LKA23 supervises +2.5V RTC supply, gates SRAM CE during brownout, and drives BATT ON to initiate secure flash commit before shutdown. Use Value: Achieves IEC 62056-21 compliance for uninterrupted metering; 10µA IBACK extends 10-year battery life by 12%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6367PKA23 | Same reset threshold (2.32V), identical BATT ON function, but uses open-drain active-high RESET output instead of open-drain active-low | Requires external pull-down for active-low logic systems; incompatible with existing RESET pull-up designs | Select when interfacing with µPs that require active-high reset assertion and tolerate higher VOL under load |
| MAX6367HKA23 | Same reset threshold and BATT ON, but features push-pull active-low RESET output with 0.3V VOL at 1.6mA | Eliminates external pull-up resistor; suitable for space-constrained layouts where board area is premium | Choose when reducing component count and simplifying layout outweighs minor quiescent current increase (15µA vs. 10µA) |
Compared with MAX6367PKA23 and MAX6367HKA23, MAX6367LKA23 offers lowest quiescent current and standard open-drain active-low RESET compatibility with legacy µP designs, making it optimal for battery longevity and drop-in replacement in existing SOT23-8 footprints.
Availability
MAX6367LKA23 is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, and retail point-of-sale terminals requiring stable component supply across extended production lifecycles.
Supply support for MAX6367LKA23 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 MAX6365–MAX6368 family targets compact, low-power µP supervision with integrated battery switchover and memory protection-specifically engineered for space-constrained, battery-backed embedded systems.
FAQ
What is the exact reset threshold voltage range for MAX6367LKA23?
The MAX6367LKA23 has a factory-preset reset threshold of 2.25V (min), 2.32V (typ), and 2.38V (max) over temperature. This range ensures robust detection of +2.5V supply faults while rejecting noise-induced false triggers, and is validated per Maxim's Electrical Characteristics table for the LKA23 suffix.
Does MAX6367LKA23 provide manual reset or watchdog functionality?
No. MAX6367LKA23 does not include manual reset (MR), watchdog timer (WDI), or auxiliary reset input (RESET IN). It is specifically the BATT ON variant of the MAX6365–MAX6368 family. Only the MAX6365, MAX6366, and MAX6368 variants offer those functions.
How does the BATT ON output behave in MAX6367LKA23?
The BATT ON output of MAX6367LKA23 is a push-pull driver that goes high only when the device is in battery-backup mode-i.e., when VCC falls below the reset threshold and VBATT exceeds VCC by at least 20mV. It sinks 3.2mA at 0.4V saturation and requires no external pull-up or pull-down.
What package type and dimensions does MAX6367LKA23 use?
MAX6367LKA23 uses an 8-pin SOT23-8 package measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads. Pinout matches the standard MAX636x SOT23 footprint, enabling direct PCB footprint reuse across the family.
Can MAX6367LKA23 operate with a 1.2V supply voltage?
Yes. MAX6367LKA23 operates from VCC = 1.2V to 5.5V and guarantees RESET assertion and BATT ON functionality down to 1.2V on either VCC or VBATT. This enables direct use with single-cell LiFePO₄ or NiMH batteries without regulation.
MAX6367LKA23 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- 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-23-8
MAX6367LKA23 FAQ
1.How can I place an order for MAX6367LKA23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6367LKA23 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 MAX6367LKA23 reliable?
The price and inventory of MAX6367LKA23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6367LKA23 is usually 5 days.
3.What payment methods are accepted for MAX6367LKA23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6367LKA23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6367LKA23?
MAX6367LKA23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6367LKA23 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 MAX6367LKA23?
For technical support, including MAX6367LKA23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6367LKA23 requirements.
6.How does Aetrix verify that MAX6367LKA23 is sourced from the original manufacturer or authorized distributors?
All MAX6367LKA23 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 MAX6367LKA23 meets industry standards.
7.What is the process for return or replacement of MAX6367LKA23?
All MAX6367LKA23 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6367LKA23, 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 MAX6367LKA23 part is unused and in its original packaging.
Return procedure for MAX6367LKA23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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