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Analog Devices Inc./Maxim Integrated MAX6862UK17+T
- Part No.:
- MAX6862UK17+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6862UK17+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,547
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Product details
Overview
MAX6862UK17+T from Maxim Integrated is a nanopower microprocessor supervisory circuit in 5-pin SOT23 package, featuring active-high push-pull RESET output, manual reset (MR) input, and pin-selectable 10ms/150ms (min) reset timeout via CT terminal. It monitors VCC from 1.2V to 5.5V with factory-trimmed 1.665V reset threshold (suffix '17'), consumes only 170nA typical supply current, and guarantees valid reset down to VCC = +1.1V - ideal for battery-powered glucose monitors and portable medical devices.
For engineers reviewing the MAX6862UK17+T datasheet, MAX6862UK17+T pinout, MAX6862UK17+T application, or MAX6862UK17+T equivalent, key selection criteria include its 1.665V threshold accuracy, CT-configurable reset delay, MR glitch rejection (200ns), immunity to short VCC transients, and compatibility with low-voltage µP reset inputs requiring active-high assertion.
Technical Context
The MAX6862UK17+T integrates voltage monitoring, manual reset control, and configurable reset timing in a single BiCMOS IC. Its internal 10kΩ MR pullup enables direct CMOS-level switch interfacing without external components, while the CT pin selects between two factory-validated timeout options (D1: 10ms min or D3: 150ms min) without requiring reprogramming or external timing elements.
Reset assertion occurs when VCC falls below 1.665V (±2.5%), MR is pulled low, or - unlike earlier variants - no watchdog timer is present (MAX6862 excludes WDI functionality). The active-high push-pull RESET output drives directly to VCC, eliminating need for external pullups and ensuring clean logic-level compatibility with µP reset inputs rated for 1.8V–5.5V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.665V ±2.5% - precisely matches 1.8V LDO output tolerance for reliable brownout detection in portable systems. |
| Supply Current | 170nA typical at +25°C - enables >10-year battery life in coin-cell–powered patient monitors. |
| Reset Timeout Options | 10ms or 150ms (min) - selectable via CT pin; ensures sufficient hold time for slow-start µPs or fast recovery in low-latency systems. |
| VCC Operating Range | 1.2V to 5.5V - supports single-cell Li-ion, NiMH, and multi-rail embedded systems without level-shifting. |
| RESET Output Type | Active-high push-pull - eliminates external pullup resistor, reduces BOM count, and ensures monotonic rise/fall under capacitive loads. |
| MR Input Behavior | Internally pulled up to VCC (10kΩ); accepts 1µs minimum pulse width and rejects <200ns glitches - robust against mechanical switch bounce and EMI. |
| Valid Reset Down To | VCC = +1.1V - guarantees deterministic reset assertion even during deep brownout, preventing undefined µP state. |
Pinout & Package
Package: 5-pin SOT23-5, 2.9mm × 1.6mm × 1.1mm, lead-free (RoHS-compliant), thermal pad not present.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; sinks/source up to 1.2mA; referenced to VCC; asserts high during fault conditions. |
| 2 | GND | Ground reference for all internal circuits; must be connected to system ground plane with low-inductance path. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC (10kΩ); requires <0.3×VCC to assert reset. |
| 4 | CT | Reset timeout select input; connect to GND for 10ms (min) timeout, or to VCC for 150ms (min) timeout - no external components needed. |
| 5 | VCC | Supply voltage input (1.2V–5.5V); must be bypassed with 0.1µF ceramic capacitor to GND near pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 170nA typical - extends battery service life in wearable health monitors without compromising supervision integrity. |
| Pin-selectable tRP | D1 (10ms) or D3 (150ms) timeout via CT - eliminates need for multiple SKUs or external RC networks in design reuse. |
| No external components | Integrated MR pullup, precision voltage reference, and timing circuitry - reduces PCB area and qualification effort. |
| VCC transient immunity | Rejects ≤40µs VCC glitches at 100mV overdrive - prevents spurious resets in noisy automotive or industrial environments. |
| Guaranteed reset validity | To VCC = +1.1V - ensures µP remains held in reset until supply stabilizes, avoiding partial execution or memory corruption. |
Applications
| Glucose Monitoring Systems | Patient Vital Sign Loggers |
|---|---|
Use Scenario: Continuous glucose monitoring (CGM) patch worn for 7–14 days on lithium coin cell power. IC Role / Device Role / Timing Role: Supervises 1.8V LDO output powering ultra-low-power ARM Cortex-M0+ MCU and analog front-end. Use Value: 170nA quiescent current minimizes battery drain; 1.665V threshold aligns with LDO dropout margin; 150ms CT-selected timeout ensures full ADC initialization before firmware boot. |
Use Scenario: Portable ECG/SpO₂ logger capturing intermittent vitals in home-care settings. IC Role / Device Role / Timing Role: Provides fail-safe reset during battery swap or low-battery brownout events. Use Value: Valid reset assertion down to VCC = +1.1V prevents MCU runaway during voltage sag; MR input enables clinician-initiated recalibration reset via tactile button. |
| Wireless Hearing Aids | Smart Wearable Sensors |
Use Scenario: Rechargeable hearing aid with Bluetooth LE streaming and adaptive noise cancellation. IC Role / Device Role / Timing Role: Monitors 1.2V buck converter output feeding DSP and RF transceiver. Use Value: 10ms CT-selected timeout enables rapid recovery after brief RF-induced supply dip; push-pull RESET avoids leakage issues of open-drain in high-impedance RF sections. |
Use Scenario: Multi-sensor fitness band using MEMS accelerometers, optical HR sensors, and BLE SoC. IC Role / Device Role / Timing Role: Coordinates cold-start sequence across mixed-voltage subsystems (1.2V core, 1.8V I/O, 3.3V sensor bias). Use Value: Single-supply supervision simplifies power sequencing; MR input allows firmware-triggered safe mode entry; no external timing components reduce BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6861UK17+T | Active-low push-pull RESET output; identical threshold, timeout options, and pinout except RESET polarity. | Requires µP with active-low reset input; incompatible with active-high-only reset pins without inversion logic. | Select when target µP mandates active-low reset assertion and board layout cannot accommodate inverters. |
| TPS3837K17DBVR | 1.665V threshold, 200ms fixed timeout, 1.5µA ICC - 10× higher supply current than MAX6862UK17+T. | Suitable for non-battery-critical industrial controllers where ultra-low ICC is not required. | Choose if existing TI-based designs require drop-in replacement with same footprint but accept higher quiescent power. |
Compared with MAX6862UK17+T, MAX6861UK17+T offers identical supervision accuracy and timing but inverted RESET polarity, while TPS3837K17DBVR trades 10× higher ICC for broader temperature range (–40°C to +125°C) and TI ecosystem support - critical for cost-sensitive, non-portable applications.
Availability
MAX6862UK17+T is available at Aetrix Electronics and suitable for glucose monitors, patient loggers, wireless hearing aids, and smart wearable sensors requiring stable component supply across long-life medical and consumer programs.
Supply support for MAX6862UK17+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, sensing, and interface applications in industrial, medical, and communications markets.
The MAX68xx family delivers nanopower supervision for battery-constrained systems, emphasizing ultra-low ICC, guaranteed reset validity at sub-1.2V VCC, and minimal external component count - targeting portable healthcare and wearables.
FAQ
What is the exact reset threshold voltage of MAX6862UK17+T?
The MAX6862UK17+T has a factory-trimmed reset threshold of 1.665V, with ±2.5% tolerance over –40°C to +85°C. This value corresponds to suffix '17' per Maxim's Threshold Suffix Guide (Table 2), and is validated across voltage and temperature - critical for accurate brownout detection in 1.8V rail systems.
How do I configure the reset timeout period on MAX6862UK17+T?
The MAX6862UK17+T 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 takes effect immediately upon power-up or after reset deassertion; no configuration register or external components are required.
Does MAX6862UK17+T include a watchdog timer function?
No, MAX6862UK17+T does not include a watchdog timer. It belongs to the MAX6861/MAX6862/MAX6863 subgroup, which provides manual reset and pin-selectable timeout but omits WDI functionality. Watchdog capability is exclusive to MAX6864–MAX6869 variants - confirmed by Selector Guide and Pin Descriptions.
What is the RESET output type and drive strength of MAX6862UK17+T?
MAX6862UK17+T features an active-high push-pull RESET output (Pin 1) referenced to VCC. It sources up to 500µA at VOH ≥ 0.8×VCC (VCC ≥ 2.38V) and sinks up to 1.2mA at VOL ≤ 0.3V (VCC ≥ 2.38V), enabling direct interface with standard CMOS µP reset inputs without pullup resistors.
Can MAX6862UK17+T operate reliably below 1.2V supply voltage?
Yes - MAX6862UK17+T guarantees valid reset assertion down to VCC = +1.1V, as specified in Electrical Characteristics. However, supply voltage must remain ≥1.2V for full functional operation (e.g., MR input recognition, CT logic evaluation); below 1.2V, only reset assertion is assured, not input responsiveness.
MAX6862UK17+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.665V
- 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
MAX6862UK17+T FAQ
1.How can I place an order for MAX6862UK17+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6862UK17+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 MAX6862UK17+T reliable?
The price and inventory of MAX6862UK17+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6862UK17+T is usually 5 days.
3.What payment methods are accepted for MAX6862UK17+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6862UK17+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6862UK17+T?
MAX6862UK17+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6862UK17+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 MAX6862UK17+T?
For technical support, including MAX6862UK17+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6862UK17+T requirements.
6.How does Aetrix verify that MAX6862UK17+T is sourced from the original manufacturer or authorized distributors?
All MAX6862UK17+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 MAX6862UK17+T meets industry standards.
7.What is the process for return or replacement of MAX6862UK17+T?
All MAX6862UK17+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6862UK17+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 MAX6862UK17+T part is unused and in its original packaging.
Return procedure for MAX6862UK17+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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