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Analog Devices Inc./Maxim Integrated MAX6862UK26
- Part No.:
- MAX6862UK26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6862UK26.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,104
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Product details
Overview
MAX6862UK26 from Maxim Integrated is a nanopower microprocessor supervisory circuit in 5-pin SOT23 package, featuring pin-selectable 10ms/150ms reset timeout, 2.625V factory-trimmed reset threshold, active-high push-pull RESET output, manual reset (MR) input, and no watchdog timer. It monitors VCC supply integrity for low-power embedded systems where ultra-low quiescent current (170nA typ) and guaranteed reset validity down to VCC = +1.1V are critical.
For engineers reviewing the MAX6862UK26 datasheet, MAX6862UK26 pinout, MAX6862UK26 application, or MAX6862UK26 equivalent, this device serves as a precision voltage monitor with configurable timing for battery-powered medical sensors, portable instrumentation, and energy-harvesting controllers requiring deterministic power-on reset behavior and immunity to short VCC transients.
Technical Context
The MAX6862UK26 implements a precision bandgap-based voltage reference and comparator to detect VCC falling below 2.625V ±2.5%, triggering an active-high RESET assertion. Its internal CT pin selects between two fixed minimum timeout periods (10ms or 150ms), with reset deassertion delayed until both VCC exceeds threshold and timeout elapses.
It integrates a 10kΩ internal MR pullup, supports CMOS-logic-level MR input with 1µs minimum pulse width and 200ns glitch rejection, and guarantees valid RESET output down to VCC = +1.1V - enabling reliable operation during brownout recovery in sub-1.8V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.625V ±2.5% - precisely matches 2.6V rail monitoring for Li-ion single-cell or regulated LDO outputs. |
| Supply Current | 170nA typical at +25°C - enables multi-year battery life in always-on glucose monitors or wearable sensors. |
| Reset Timeout Options | 10ms or 150ms (min), pin-selectable via CT - provides flexibility for fast-boot MCUs vs. slow-start analog subsystems. |
| RESET Output Type | Active-high push-pull - eliminates external pullup, simplifies interface to µP reset inputs expecting high-valid logic. |
| VCC Validity Range | Guaranteed RESET validity down to VCC = +1.1V - ensures deterministic reset assertion during deep brownout recovery. |
| MR Input Behavior | Internally pulled up to VCC (10kΩ), accepts CMOS levels, 1µs min pulse - supports direct switch or GPIO-driven manual reset without external components. |
Pinout & Package
Package: 5-pin SOT23 (2.9mm × 1.6mm × 1.1mm), surface-mount, lead-free compatible.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output - drives µP reset pin directly; sinks/source capability defined per VCC level (e.g., VOH ≥ 0.8×VCC at ISOURCE = 500µA). |
| 2 | GND | Ground reference - must be connected to system ground plane; shared return for all internal circuits. |
| 3 | MR | Active-low manual reset input - asserted low initiates reset; internally pulled up to VCC (10kΩ); immune to <200ns noise spikes. |
| 4 | CT | Reset timeout select input - logic low selects 10ms (min), logic high selects 150ms (min); no external bias required. |
| 5 | VCC | Supply voltage input - monitored rail (1.2V–5.5V); requires 0.1µF bypass capacitor to GND for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 170nA typical - reduces standby power in battery-critical applications like patient monitors and portable diagnostics. |
| Pin-selectable reset timeout | 10ms or 150ms (min) via CT pin - eliminates need for external RC timing components or firmware configuration. |
| Guaranteed reset validity to 1.1V | Ensures functional reset assertion even during severe brownout - critical for fail-safe behavior in medical devices. |
| No external components required | Integrates reference, comparator, timer, and MR pullup - reduces BOM count and PCB area in space-constrained wearables. |
| Immunity to short VCC transients | Rejects ≤40µs transients at 100mV overdrive - prevents spurious resets in electrically noisy portable equipment. |
Applications
| Glucose Monitoring Systems | Portable ECG Devices |
|---|---|
Use Scenario: Continuous glucose sensing with Bluetooth LE transmission powered by coin-cell battery. IC Role / Device Role / Timing Role: Monitors 2.6V regulated rail; asserts active-high RESET on brownout to prevent corrupted sensor readings or BLE stack faults. Use Value: 170nA supply current extends battery life beyond 12 months; 10ms timeout aligns with MCU boot sequence. |
Use Scenario: Handheld ECG recorder with analog front-end and low-power ARM Cortex-M0+. IC Role / Device Role / Timing Role: Supervises 2.6V analog supply; triggers reset if rail sags during high-current ADC sampling bursts. Use Value: Guaranteed RESET validity to VCC = +1.1V ensures safe shutdown before analog section enters undefined state. |
| Wireless Sensor Nodes | Energy-Harvesting Controllers |
Use Scenario: LoRaWAN soil moisture node powered by solar cell + supercapacitor. IC Role / Device Role / Timing Role: Detects VCC rise above 2.625V after energy harvesting accumulates sufficient charge; releases RESET to enable MCU startup. Use Value: 150ms timeout accommodates slow capacitor charging; CT pin allows field-selectable timing without hardware change. |
Use Scenario: Indoor light-harvesting controller managing buck-boost regulator and EEPROM logging. IC Role / Device Role / Timing Role: Acts as power-good detector for harvested 2.6V rail; asserts RESET only when stable, preventing premature firmware execution. Use Value: Immunity to 40µs VCC glitches avoids false resets during intermittent illumination transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6861UK26 | Active-low push-pull RESET output; identical threshold, timeout options, and pinout except RESET polarity. | Requires µP with active-low reset input; no logic inversion needed in PCB layout. | Select when target MCU reset pin is active-low and board routing favors direct connection without inverters. |
| TPS3836K26DBVR | 2.63V threshold, 200ms fixed timeout, 1.2µA supply current, SOT23-5 package - higher ICC, no CT select. | Lacks pin-selectable timeout; higher current limits battery lifetime in multi-year deployments. | Choose only if design prioritizes TI supply chain continuity and can tolerate 7× higher quiescent current. |
Compared with MAX6862UK26, MAX6861UK26 offers identical supervision accuracy and timing but inverted RESET polarity, while TPS3836K26DBVR trades nanopower operation for broader industry availability - making MAX6862UK26 optimal for ultra-low-power, long-life medical and sensor applications demanding precise 2.625V detection and flexible timeout selection.
Availability
MAX6862UK26 is available at Aetrix Electronics and suitable for glucose monitors, portable ECG devices, and wireless sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed nanopower performance across -40°C to +85°C.
Supply support for MAX6862UK26 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, medical, and communications markets.
The MAX6854–MAX6869 family delivers nanopower supervisory functionality targeting battery-critical portable electronics, emphasizing ultra-low ICC, wide VCC range, and robust transient immunity for fail-safe microprocessor reset control.
FAQ
What is the exact reset threshold voltage of the MAX6862UK26?
The MAX6862UK26 has a factory-trimmed reset threshold of 2.625V with ±2.5% tolerance over temperature (-40°C to +85°C). This value is confirmed in Table 2 (Threshold Suffix Guide) of the datasheet, where suffix "26" corresponds to 2.625V nominal. The MAX6862UK26 maintains this accuracy without external calibration or trimming components.
Does the MAX6862UK26 include a watchdog timer function?
No, the MAX6862UK26 does not include a watchdog timer. Per the Selector Guide and Pin Description sections, only MAX6864–MAX6869 variants integrate WDI functionality. The MAX6862UK26 belongs to the MAX6861/MAX6862/MAX6863 subgroup, which features pin-selectable reset timeout (via CT) and manual reset (MR), but no watchdog input or timer circuitry.
How is the reset timeout period selected on the MAX6862UK26?
The MAX6862UK26 uses the CT pin (Pin 4) to select between two minimum reset timeout periods: connect CT to GND for 10ms (min), or to VCC for 150ms (min). This selection is static and effective immediately upon power-up or reset event. The MAX6862UK26 datasheet specifies these values in Table 1 and confirms CT functionality in the MAX6861/MAX6862/MAX6863 Pin Description.
What type of RESET output does the MAX6862UK26 provide?
The MAX6862UK26 provides an active-high push-pull RESET output (Pin 1). Unlike open-drain variants, it does not require an external pullup resistor and actively drives high or low. Electrical characteristics confirm VOH ≥ 0.8×VCC when sourcing 500µA, making it compatible with standard CMOS reset inputs expecting high-valid logic levels.
Is the MAX6862UK26 compatible with 1.8V or lower supply rails?
Yes, the MAX6862UK26 operates with VCC as low as 1.2V and guarantees valid RESET output down to VCC = +1.1V. Its 2.625V reset threshold remains accurate across the full -40°C to +85°C range, and supply current stays at 170nA typical even at 1.8V. This makes the MAX6862UK26 suitable for modern ultra-low-voltage microcontrollers and energy-harvesting systems.
MAX6862UK26 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.625V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6862UK26 FAQ
1.How can I place an order for MAX6862UK26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6862UK26 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 MAX6862UK26 reliable?
The price and inventory of MAX6862UK26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6862UK26 is usually 5 days.
3.What payment methods are accepted for MAX6862UK26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6862UK26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6862UK26?
MAX6862UK26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6862UK26 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 MAX6862UK26?
For technical support, including MAX6862UK26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6862UK26 requirements.
6.How does Aetrix verify that MAX6862UK26 is sourced from the original manufacturer or authorized distributors?
All MAX6862UK26 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 MAX6862UK26 meets industry standards.
7.What is the process for return or replacement of MAX6862UK26?
All MAX6862UK26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6862UK26, 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 MAX6862UK26 part is unused and in its original packaging.
Return procedure for MAX6862UK26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6862UK26 Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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TPS3828-33DBVR
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
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MCP111T-300E/TT
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MCP120T-315I/TT
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MCP809T-315I/TT
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