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Analog Devices Inc./Maxim Integrated MAX6862UK32+T
- Part No.:
- MAX6862UK32+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6862UK32+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,182
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Product details
Overview
MAX6862UK32+T from Maxim Integrated is a nanopower microprocessor supervisory circuit in 5-pin SOT23 package, featuring pin-selectable 10ms/150ms reset timeout, active-high push-pull RESET output, manual reset (MR) input, and guaranteed reset validity down to VCC = +1.1V. It monitors supply voltage with factory-trimmed 3.200V reset threshold and asserts reset during power-up, brownout, or MR assertion.
For engineers reviewing the MAX6862UK32+T datasheet, MAX6862UK32+T pinout, MAX6862UK32+T application, or MAX6862UK32+T equivalent, this device serves as a low-power, temperature-stable reset supervisor for battery-critical systems where ultra-low ICC (170nA typ), precise VTH tolerance (±2.5%), and glitch-immune timing are essential selection criteria.
Technical Context
The MAX6862UK32+T implements a precision bandgap-based voltage monitor with 2.5% hysteresis and integrates a CT-controlled reset timeout generator selecting between D1 (10ms min) and D3 (150ms min) periods. Its MR input features 10kΩ internal pullup and 1µs minimum pulse width support.
This variant belongs to the MAX6861–MAX6863 subgroup and lacks watchdog timer (WDI) or I.C. pins-unlike MAX6864–MAX6869 or MAX6858/MAX6860-making it suitable for applications requiring only voltage monitoring and manual reset with selectable delay, not code-execution supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 3.200V ±2.5% - factory-trimmed for stable brownout detection across -40°C to +85°C |
| Supply Current (ICC) | 170nA typical at VCC = 1.8V - enables multi-year operation in coin-cell-powered devices |
| Reset Timeout Options | 10ms or 150ms (min), selected via CT pin - supports fast recovery or extended hold-off per system boot requirements |
| RESET Output Type | Active-high push-pull - eliminates external pullup, drives µP reset directly without level-shifting |
| Valid Reset Down to VCC | +1.1V - ensures reliable reset assertion even during deep brownout before system collapse |
| MR Input Pullup | 10kΩ internal - simplifies manual reset switch interface; no external resistor required |
| VCC Transient Immunity | Immune to ≤40µs transients at 100mV overdrive - prevents false resets in noisy power environments |
Pinout & Package
MAX6862UK32+T uses a 5-pin SOT23-5 package (JEDEC MO-178AA), footprint-compatible with industry-standard supervisory ICs. Pin 1 is CT (Reset Timeout Select), Pin 2 and Pin 3 are GND, Pin 4 is RESET (active-high push-pull), and Pin 5 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CT) | Reset Timeout Select Input | Logic-low selects 10ms min timeout; logic-high (VCC) selects 150ms min timeout - no external components needed |
| 2, 3 (GND) | Ground Reference | Dual ground pins reduce impedance and improve noise immunity in compact PCB layouts |
| 4 (RESET) | Active-High Push-Pull Reset Output | Drives µP reset pin directly; VOH ≥ 0.8×VCC at 500µA source - compatible with 1.2V–5.5V logic families |
| 5 (VCC) | Supply Voltage Input | Monitored supply rail; bypassing with 0.1µF capacitor to GND required for stable operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 170nA typical - extends battery life in portable medical and IoT edge nodes beyond 10 years |
| Pin-selectable reset delay | 10ms or 150ms (min) via CT pin - eliminates BOM variants and enables single-firmware support across multiple product SKUs |
| Guaranteed reset validity | Down to VCC = +1.1V - ensures deterministic reset behavior during worst-case brownout conditions |
| MR input with internal pullup | 10kΩ integrated - reduces component count and layout area; supports direct connection to momentary switch |
| Transient immunity | Resists ≤40µs VCC glitches at 100mV overdrive - avoids spurious resets in automotive or industrial power rails |
Applications
| Glucose Monitor | Patient Monitor |
|---|---|
Use Scenario: Continuous glucose sensing in wearable patch pumps with coin-cell power and strict safety-critical reset reliability. IC Role / Device Role / Timing Role: Supervises 3.3V system rail and provides active-high reset to ARM Cortex-M0 host MCU during cold start and low-battery brownout. Use Value: 170nA ICC preserves battery capacity; 3.200V VTH matches LDO output tolerance; 150ms timeout ensures full ADC initialization before firmware execution. |
Use Scenario: Portable ECG and SpO₂ units operating on AA batteries with intermittent wireless transmission bursts. IC Role / Device Role / Timing Role: Monitors main 3.2V supply and asserts reset if voltage sags below threshold during RF transmit surge. Use Value: Dual GND pins minimize ground bounce; 10ms timeout option enables rapid recovery after transient dips; CT pin allows field-programmable delay without hardware change. |
| MP3 Player | Cell Phone Baseband Module |
Use Scenario: Flash-memory-based audio players with Li-ion battery and aggressive power gating. IC Role / Device Role / Timing Role: Provides clean power-on reset to DSP core and manages reset hold time during VCC ramp-up from deep sleep. Use Value: Active-high push-pull RESET eliminates external pullup resistor; 1.1V valid reset ensures reset remains asserted until supply stabilizes post-wake. |
Use Scenario: Baseband processor subsystem in dual-SIM smartphones requiring independent reset sequencing. IC Role / Device Role / Timing Role: Supervises 2.8V baseband supply and delivers synchronized reset to modem IC upon MR assertion from PMIC or AP. Use Value: 10kΩ MR pullup enables direct switch interface; 2.5% VTH tolerance meets 3GPP thermal stability requirements across -20°C to +70°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6861UK32+T | Same 3.200V VTH and SOT23-5 package, but features active-low push-pull RESET output | Requires inverted reset logic on µP side; unsuitable for systems with non-inverting reset inputs | Select MAX6861UK32+T only when host MCU requires active-low reset assertion |
| TPS3837K32DBVR | TI part with identical 3.2V threshold and 10ms/150ms pin-selectable timeout, but 500nA ICC (vs. 170nA) | Higher supply current reduces battery lifetime in ultra-low-power designs; same pinout and function otherwise | Choose TPS3837K32DBVR only if Maxim supply chain constraints exist and 330nA higher ICC is acceptable |
Compared with MAX6862UK32+T, MAX6861UK32+T offers identical supervision accuracy and low-power performance but mandates active-low reset compatibility, while TPS3837K32DBVR trades 330nA higher ICC for second-source availability-neither is pin-compatible nor drop-in, requiring validation of RESET polarity and power budget impact.
Availability
MAX6862UK32+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered instrumentation, wearables, and low-power embedded controllers requiring stable component supply with long lifecycle support.
Supply support for MAX6862UK32+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 high-performance analog and mixed-signal ICs for power, sensing, and interface applications, with emphasis on reliability and integration.
The MAX6861–MAX6863 family was engineered specifically for ultra-low-power, pin-configurable supervisory functions in space-constrained, battery-operated systems-prioritizing nanoscale ICC, factory-trimmed VTH, and flexible reset timing without external components.
FAQ
What is the exact reset threshold voltage of MAX6862UK32+T?
The MAX6862UK32+T has a factory-trimmed reset threshold voltage of 3.200V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in Table 2 (Threshold Suffix Guide) of the datasheet, where suffix "32" corresponds to VTH = 3.200V. The MAX6862UK32+T maintains this accuracy without calibration or external components.
How does the CT pin configure the reset timeout period on MAX6862UK32+T?
On the MAX6862UK32+T, the CT pin (Pin 1) selects between two minimum reset timeout periods: connecting CT to GND selects 10ms (D1), while connecting CT to VCC selects 150ms (D3). This selection is latched at reset deassertion and remains effective until the next reset cycle. The MAX6862UK32+T does not require pull resistors-the internal logic interprets direct logic levels.
Is MAX6862UK32+T compatible with 1.8V microcontrollers?
Yes, MAX6862UK32+T is fully compatible with 1.8V microcontrollers. Its RESET output delivers VOH ≥ 0.8 × VCC at 500µA source current, ensuring robust high-level drive even at VCC = 1.8V (VOH ≥ 1.44V). Additionally, its supply current remains at 170nA typical at 1.8V, and reset validity is guaranteed down to VCC = 1.1V-well below 1.8V operation.
Does MAX6862UK32+T include a watchdog timer function?
No, MAX6862UK32+T does not include a watchdog timer. It belongs to the MAX6861–MAX6863 subgroup, which features only voltage monitoring, manual reset (MR), and pin-selectable reset timeout (CT). Watchdog functionality is exclusive to MAX6864–MAX6869 variants (e.g., MAX6864UK32D3S+T), which add WDI input and fixed 3.3s/209s timeout options.
What is the recommended bypass capacitor for MAX6862UK32+T?
The datasheet specifies a 0.1µF ceramic capacitor placed between VCC (Pin 5) and GND (Pins 2/3) as mandatory for stable operation. This capacitor must be located within 5mm of the MAX6862UK32+T package to suppress high-frequency noise and ensure accurate voltage monitoring. X7R or C0G dielectrics are preferred; tantalum or electrolytic capacitors are not recommended due to ESR and aging effects.
MAX6862UK32+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:
- 3.2V
- 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
MAX6862UK32+T FAQ
1.How can I place an order for MAX6862UK32+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6862UK32+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 MAX6862UK32+T reliable?
The price and inventory of MAX6862UK32+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6862UK32+T is usually 5 days.
3.What payment methods are accepted for MAX6862UK32+T?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6862UK32+T?
MAX6862UK32+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6862UK32+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 MAX6862UK32+T?
For technical support, including MAX6862UK32+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6862UK32+T requirements.
6.How does Aetrix verify that MAX6862UK32+T is sourced from the original manufacturer or authorized distributors?
All MAX6862UK32+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 MAX6862UK32+T meets industry standards.
7.What is the process for return or replacement of MAX6862UK32+T?
All MAX6862UK32+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6862UK32+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 MAX6862UK32+T part is unused and in its original packaging.
Return procedure for MAX6862UK32+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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