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Analog Devices Inc./Maxim Integrated MAX6862UK17+
- Part No.:
- MAX6862UK17+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6862UK17+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,336
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Product details
Overview
The MAX6862UK17+ from Maxim Integrated is a nanopower microprocessor supervisory circuit in a 5-pin SOT23 package, featuring a factory-trimmed 1.665V reset threshold, pin-selectable 10ms/150ms (min) reset timeout, active-high push-pull RESET output, manual reset input (MR), and no watchdog timer. It monitors VCC supply integrity for brownout detection and asserts reset during power-up/down or voltage sags, targeting ultra-low-power portable medical and consumer electronics.
For engineers reviewing the MAX6862UK17+ datasheet, MAX6862UK17+ pinout, MAX6862UK17+ application, or MAX6862UK17+ equivalent, this device is selected for battery-powered systems requiring guaranteed reset validity down to VCC = +1.1V, immunity to short VCC transients (<40µs at 100mV overdrive), and minimal quiescent current (170nA typ) without external components.
Technical Context
The MAX6862UK17+ implements a precision bandgap-based voltage monitor with 2.5% threshold tolerance and 0.5% hysteresis, coupled to a digital timeout generator triggered by VCC fall, MR assertion, or both. Its CT pin selects between two fixed reset timeout periods-10ms (CT = low) or 150ms (CT = high)-with no internal oscillator drift compensation beyond specified temperature range.
This variant belongs to the MAX6861–MAX6863 subgroup: it includes MR and CT pins but excludes WDI and watchdog functionality. Its push-pull active-high RESET output is referenced to VCC and sinks ≤0.3V at 500µA load while sourcing ≥0.8×VCC at 500µA, ensuring robust logic-level compatibility across 1.2V–5.5V supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 1.665V (typ), factory-trimmed ±2.5%; ensures reliable brownout detection at 1.665V nominal supply level |
| Supply Current | 170nA (typ) at VCC = 1.8V; enables multi-year operation on coin-cell batteries in always-on monitoring |
| Reset Timeout Options | Pin-selectable: 10ms (min) or 150ms (min); supports fast recovery or extended hold-off per system boot requirements |
| RESET Output Type | Push-pull active-high; eliminates need for external pullup and guarantees valid logic HIGH down to VCC = +1.1V |
| VCC Operating Range | 1.2V to 5.5V; compatible with Li-ion, alkaline, and regulated 1.8V/3.3V/5V rails without level-shifting |
| MR Input Behavior | Active-low with 10kΩ internal pullup; accepts CMOS logic levels and requires no external debounce circuitry |
| Reset Validity Limit | Guaranteed RESET assertion down to VCC = +1.1V; ensures deterministic reset state even during deep brownout |
Pinout & Package
Package: 5-pin SOT23-5, lead-free (RoHS-compliant), footprint-compatible with industry-standard 5-pin SOT23 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; drives HIGH when VCC ≥ threshold and MR deasserted; sinks ≤0.3V / sources ≥0.8×VCC |
| 2 | GND | Ground reference for all internal circuits; must be connected to system ground plane with low-impedance path |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 10kΩ; triggers reset when pulled LOW |
| 4 | CT | Reset timeout select input; LOW = 10ms (min), HIGH = 150ms (min); no pullup/pulldown required |
| 5 | VCC | Supply voltage input and monitored rail; bypass with 0.1µF ceramic capacitor to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 170nA typical at 1.8V - extends battery life in glucose monitors and wearables beyond 5 years |
| Pin-selectable reset delay | 10ms or 150ms minimum timeout via CT pin - eliminates BOM variants for dual-timing requirements |
| Reset validity to 1.1V | Guaranteed RESET assertion down to VCC = +1.1V - ensures fail-safe behavior during deep undervoltage |
| Transient immunity | Immune to VCC glitches <40µs duration at 100mV overdrive - prevents spurious resets in noisy environments |
| No external components | Self-contained supervision - reduces PCB area, BOM count, and qualification effort vs. discrete solutions |
Applications
| Glucose Monitors | Patient Monitoring Devices |
|---|---|
|
Use Scenario: Continuous blood glucose sensing in handheld meters with CR2032 coin-cell power. IC Role / Device Role / Timing Role: Supervises 1.8V analog front-end and MCU supply; asserts RESET on battery sag below 1.665V. Use Value: Prevents corrupted sensor readings or firmware crashes during low-battery operation with 170nA drain. |
Use Scenario: Portable ECG/SpO₂ units operating on dual AA alkaline cells with variable discharge curve. IC Role / Device Role / Timing Role: Monitors 3.3V regulated rail; provides 150ms reset hold time (CT = HIGH) for safe MCU initialization. Use Value: Ensures deterministic boot sequence despite slow-rising supply during cold-start or battery swap. |
| MP3 Players | Smart Pagers |
|
Use Scenario: Flash-memory-based audio players using single-cell Li-ion (2.8V–4.2V range). IC Role / Device Role / Timing Role: Resets audio SoC when VCC drops below 1.665V during deep discharge; CT = LOW for 10ms fast recovery. Use Value: Enables graceful shutdown before data corruption, with minimal current draw extending playback time. |
Use Scenario: Two-way pagers with intermittent RF transmission causing supply ripple on 3.0V rail. IC Role / Device Role / Timing Role: Detects transient brownouts induced by PA switching; rejects spikes <40µs via built-in immunity. Use Value: Eliminates false resets during TX bursts, maintaining message queue integrity and user session continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6861UK17+ | Same 1.665V threshold and CT-selectable timeouts, but active-low push-pull RESET output | Requires inverted reset logic on host MCU; unsuitable where active-high reset is mandatory | Select MAX6861UK17+ only if target µP accepts active-low reset and board layout allows signal inversion |
| TPS3837K33DBVR | Fixed 3.3V threshold, 200ms reset timeout, 1.6µA supply current, SOT23-5 | Lacks pin-selectable timing and ultra-low current; suited for higher-voltage, non-battery-critical systems | Choose TPS3837K33DBVR only when 3.3V monitoring is required and 10× higher ICC is acceptable |
Compared with MAX6862UK17+, MAX6861UK17+ offers identical timing and threshold but inverted reset polarity, while TPS3837K33DBVR trades nanopower operation for higher integration at 3.3V - making MAX6862UK17+ optimal for sub-2V battery monitoring with active-high interface constraints.
Availability
MAX6862UK17+ is available at Aetrix Electronics and suitable for glucose monitors, patient monitors, MP3 players, and smart pagers requiring stable component supply across long-lifecycle medical and consumer programs.
Supply support for MAX6862UK17+ 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 MAX6861–MAX6863 product line delivers nanopower supervisory functions with pin-selectable timing for battery-constrained portable electronics - specifically engineered to replace discrete RC-reset networks with guaranteed performance.
FAQ
What is the exact reset threshold voltage of the MAX6862UK17+?
The MAX6862UK17+ has a factory-trimmed reset threshold voltage of 1.665V (typical), with guaranteed tolerance of ±2.5% over -40°C to +85°C. This value is fixed per the "17" suffix in the part number and corresponds to the 1.665V entry in Table 2 (Threshold Suffix Guide) of the datasheet. The MAX6862UK17+ does not support adjustable or programmable thresholds.
How do I configure the reset timeout period on the MAX6862UK17+?
The MAX6862UK17+ uses its 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 sampled at reset assertion and remains effective until the next reset event. No external resistor or capacitor is needed - the MAX6862UK17+ implements the timing digitally.
Does the MAX6862UK17+ include a watchdog timer function?
No, the MAX6862UK17+ does not include a watchdog timer. It belongs to the MAX6861–MAX6863 subgroup, which features MR and CT pins but omits WDI and watchdog circuitry. Watchdog capability is exclusive to MAX6864–MAX6869 variants (e.g., MAX6864UK16D3S). The MAX6862UK17+ provides only voltage monitoring, manual reset, and pin-selectable timeout.
What is the RESET output type and drive strength of the MAX6862UK17+?
The MAX6862UK17+ features an active-high push-pull RESET output (Pin 1). It sources ≥0.8×VCC at 500µA and sinks ≤0.3V at 500µA, with guaranteed validity down to VCC = +1.1V. Unlike open-drain variants, it requires no external pullup and directly interfaces with standard CMOS inputs without level-shifting.
Can the MAX6862UK17+ operate from a 1.2V supply?
Yes, the MAX6862UK17+ operates across VCC = 1.2V to 5.5V. At 1.2V, it maintains full supervisory functionality including reset assertion, MR response, and CT pin sampling. Its reset output remains valid (driving HIGH/LOW as specified) down to VCC = +1.1V, enabling use in ultra-low-voltage energy-harvesting or single-cell NiMH systems.
MAX6862UK17+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- 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+ FAQ
1.How can I place an order for MAX6862UK17+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6862UK17+ 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+ reliable?
The price and inventory of MAX6862UK17+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6862UK17+ is usually 5 days.
3.What payment methods are accepted for MAX6862UK17+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6862UK17+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6862UK17+?
MAX6862UK17+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6862UK17+ 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+?
For technical support, including MAX6862UK17+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6862UK17+ requirements.
6.How does Aetrix verify that MAX6862UK17+ is sourced from the original manufacturer or authorized distributors?
All MAX6862UK17+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6862UK17+?
All MAX6862UK17+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6862UK17+, 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+ part is unused and in its original packaging.
Return procedure for MAX6862UK17+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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