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Analog Devices Inc./Maxim Integrated MAX6836VXSD0+
- Part No.:
- MAX6836VXSD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6836VXSD0+.pdf
- Description:
- POWER SUPPLY SUPPORT CIRCUIT, FI
- Quantity:
- Payment:
- Shipping:
Inventory:286
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Product details
Overview
MAX6836VXSD0+ from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit designed to monitor +1.575V supply rails in ultra-low-voltage digital systems. It asserts RESET when VCC drops below 1.575V (±2.5% over temperature), maintains reset for 1.5ms after recovery, and draws only 9µA typical supply current at 1.8V. Used in portable equipment and battery-powered controllers to prevent code-execution errors during brownout.
For engineers reviewing the MAX6836VXSD0+ datasheet, MAX6836VXSD0+ pinout, MAX6836VXSD0+ application, or MAX6836VXSD0+ equivalent, key selection criteria include its 1.575V factory-set threshold, 1.5ms timeout, SC70-4 package, active-high push-pull output, and manual reset debouncing capability - all critical for reliable low-power µP reset design.
Technical Context
The MAX6836VXSD0+ implements a precision bandgap-based voltage comparator with 444mV internal reference, comparing VCC against a trimmed resistive divider to generate reset at 1.575V. Its reset logic includes a monostable timeout circuit triggered by either VCC drop or MR assertion, with fixed 1.5ms delay determined by on-chip RC timing.
It features a debounced manual reset input (MR) with 20kΩ internal pullup and 2µs minimum pulse width requirement, and guarantees valid RESET output down to VCC = 0.75V (active-high). The push-pull driver delivers VOH ≥ 0.8×VCC at 10µA source current and VOL ≤ 0.2×VCC at 80µA sink current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.575V ±2.5% over -40°C to +85°C - ensures reliable detection of 1.5V–1.6V supply brownout |
| Reset Timeout Period | 1.5ms - provides sufficient hold time for µP power stabilization before release |
| Supply Current | 9µA typical at 1.8V - enables multi-year battery life in always-on monitoring applications |
| Output Type | Push-pull active-high RESET - eliminates external pullup and supports direct CMOS interface |
| Manual Reset | Debounced MR input with 20kΩ internal pullup - removes need for external RC debounce circuitry |
| Operating Voltage Range | 0.75V to 3.6V - supports operation down to near-threshold VCC while maintaining reset validity |
| Reset Validity Limit | VCC ≥ 0.75V - guarantees RESET remains asserted until supply recovers above safe logic level |
Pinout & Package
MAX6836VXSD0+ is housed in a 4-pin SC70-4 package (2.0mm × 2.1mm, 0.65mm pitch), optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and reset comparator |
| 2 | RESET | Push-pull active-high output - drives high during reset, low otherwise; no external pullup required |
| 3 | MR | Active-low debounced manual reset input - internally pulled up to VCC; 2µs minimum pulse width |
| 4 | VCC | Monitored supply input and power rail - also serves as reference for RESET output voltage levels |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.575V threshold | Eliminates external resistor networks and calibration, reducing BOM count and layout area |
| 1.5ms fixed reset timeout | Guarantees µP reset hold time meets JEDEC JESD78 reliability requirements for power sequencing |
| 7.5µA to 9µA supply current | Enables continuous supervision in energy-harvesting and coin-cell-powered IoT edge nodes |
| Debounced MR input | Rejects mechanical switch bounce and EMI transients without external filtering components |
| SC70-4 footprint | Provides same board area as SOT-23-3 but adds dedicated MR pin - improves design flexibility vs. 3-pin alternatives |
Applications
| Battery-Powered Wearables | Low-Voltage Microcontroller Systems |
|---|---|
|
Use Scenario: A fitness tracker uses a 1.5V Li-SOCl₂ primary cell powering an ARM Cortex-M0+ MCU with tight voltage margins. IC Role / Device Role / Timing Role: MAX6836VXSD0+ monitors VCC and asserts active-high RESET to halt execution when voltage sags below 1.575V during cold start or load surge. Use Value: Prevents flash corruption and register lockup by guaranteeing 1.5ms reset assertion - longer than the MCU's internal power-on reset timer. |
Use Scenario: An industrial sensor node employs a 1.6V DC/DC converter to power an ultra-low-power RISC-V SoC operating at 1.5V nominal. IC Role / Device Role / Timing Role: MAX6836VXSD0+ acts as primary brownout detector, interfacing directly to the SoC's active-high reset pin via push-pull drive. Use Value: Delivers rail-to-rail RESET voltage swing (0.75V–3.6V VCC compatible), ensuring noise-immune reset signaling without level-shifting. |
| Portable Medical Devices | Energy-Harvesting Edge Nodes |
|
Use Scenario: A handheld glucose meter uses a single 1.5V alkaline cell and must maintain data integrity across battery discharge from 1.6V to 0.9V. IC Role / Device Role / Timing Role: MAX6836VXSD0+ triggers reset at 1.575V threshold and holds it until VCC recovers above 1.575V + hysteresis, then releases after 1.5ms. Use Value: Its ±2.5% threshold accuracy over temperature prevents premature resets during clinical use across 0°C–50°C ambient range. |
Use Scenario: A solar-powered environmental sensor wakes periodically using harvested energy stored in a 1.5V supercapacitor. IC Role / Device Role / Timing Role: MAX6836VXSD0+ supervises the supercapacitor voltage and forces system reset if charge falls below 1.575V during wake-up sequence. Use Value: 9µA quiescent current extends usable runtime between harvest cycles - critical for sub-10µA average system budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6836VXSD3+ | Same 1.575V threshold and SC70-4 package, but 210ms reset timeout instead of 1.5ms | Suitable for systems requiring longer reset hold time during slow power ramp-up or thermal shutdown recovery | Select MAX6836VXSD3+ only if extended reset duration is explicitly required; otherwise MAX6836VXSD0+ matches standard µP POR timing. |
| MAX6316HPUK46+T | 1.6V threshold (±1.5%), 1.6ms timeout, SOT-23-5 package, 1.5µA supply current | Lower power and higher accuracy, but requires external pullup for open-drain RESET and lacks debounced MR | Choose MAX6316HPUK46+T for ultra-low-power applications where MR is unused and external pullup is acceptable. |
Compared with MAX6836VXSD3+, MAX6836VXSD0+ provides tighter alignment with typical µP power-on reset timing; compared with MAX6316HPUK46+T, it trades lower quiescent current for integrated MR debouncing and push-pull simplicity - making it optimal for cost-sensitive, space-constrained portable designs.
Availability
MAX6836VXSD0+ is available at Aetrix Electronics and suitable for portable medical devices, battery-powered wearables, and low-voltage microcontroller systems requiring stable component supply across extended production lifecycles.
Supply support for MAX6836VXSD0+ 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 consumer markets.
The MAX6832–MAX6840 family targets ultra-low-voltage power monitoring in portable and battery-operated systems, delivering factory-trimmed reset thresholds and minimal quiescent current in miniature SC70 packages.
FAQ
What is the exact reset threshold voltage of the MAX6836VXSD0+ and how stable is it over temperature?
The MAX6836VXSD0+ has a factory-set reset threshold of 1.575V with ±2.5% accuracy over the full -40°C to +85°C operating range. This specification is guaranteed by design and confirmed in the Electrical Characteristics table of the official datasheet. The threshold is derived from a precision bandgap reference and trimmed resistive divider, ensuring consistent brownout detection across environmental conditions without external calibration. The MAX6836VXSD0+ maintains this tolerance even under varying load and supply conditions.
Does the MAX6836VXSD0+ require an external pullup resistor on its RESET pin?
No, the MAX6836VXSD0+ features a push-pull active-high RESET output, meaning it actively drives both HIGH and LOW states without needing an external pullup. This simplifies PCB layout and reduces component count compared to open-drain alternatives. The output delivers VOH ≥ 0.8×VCC at 10µA source current and VOL ≤ 0.2×VCC at 80µA sink current, ensuring robust CMOS-level signaling directly to the target µP's reset input. The MAX6836VXSD0+ is fully functional with only VCC, GND, MR, and RESET connected.
What is the function of the MR pin on the MAX6836VXSD0+ and how should it be used?
The MR (Manual Reset) pin on the MAX6836VXSD0+ is an active-low, debounced input with a 20kΩ internal pullup to VCC. Pulling MR low forces an immediate reset, which remains asserted for the full 1.5ms timeout period after MR returns high. No external debounce circuitry is needed due to on-chip filtering. If unused, MR may be left floating or tied to VCC. The MAX6836VXSD0+ specifies a 2µs minimum pulse width and rejects glitches shorter than 100ns, making it suitable for noisy environments or mechanical switch interfaces.
Can the MAX6836VXSD0+ operate reliably at VCC voltages below 1.0V?
The MAX6836VXSD0+ guarantees valid RESET output down to VCC = 0.75V for active-high operation, per the Absolute Maximum Ratings and Electrical Characteristics tables. Below 0.75V, reset behavior is not specified and should be avoided in production designs. At VCC = 0.75V, the device still sources 10µA with VOH ≥ 0.6V (0.8×VCC), ensuring compatibility with most 1.2V/1.5V logic families. The MAX6836VXSD0+ is not rated for operation below 0.75V, and functionality below that level is not assured.
How does the 1.5ms reset timeout of the MAX6836VXSD0+ compare to common microprocessor power-on reset requirements?
The 1.5ms reset timeout of the MAX6836VXSD0+ aligns with JEDEC JESD78 Class II requirements for power-on reset hold time and exceeds the minimum 1ms typically required by ARM Cortex-M and RISC-V microcontrollers. This duration ensures the µP's internal PLLs, memories, and clock trees stabilize before release. Unlike adjustable or capacitor-timed supervisors, the MAX6836VXSD0+'s fixed 1.5ms delay eliminates component tolerance drift and temperature dependence - providing deterministic reset timing critical for certified medical and industrial applications.
MAX6836VXSD0+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 70µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6836VXSD0+ FAQ
1.How can I place an order for MAX6836VXSD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6836VXSD0+ 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 MAX6836VXSD0+ reliable?
The price and inventory of MAX6836VXSD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6836VXSD0+ is usually 5 days.
3.What payment methods are accepted for MAX6836VXSD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6836VXSD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6836VXSD0+?
MAX6836VXSD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6836VXSD0+ 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 MAX6836VXSD0+?
For technical support, including MAX6836VXSD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6836VXSD0+ requirements.
6.How does Aetrix verify that MAX6836VXSD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6836VXSD0+ 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 MAX6836VXSD0+ meets industry standards.
7.What is the process for return or replacement of MAX6836VXSD0+?
All MAX6836VXSD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6836VXSD0+, 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 MAX6836VXSD0+ part is unused and in its original packaging.
Return procedure for MAX6836VXSD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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