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Analog Devices Inc./Maxim Integrated MAX6411BS44
- Part No.:
- MAX6411BS44
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 4-WFBGA, CSPBGA
- Datasheet:
-
MAX6411BS44.pdf
- Description:
- IC SUPERVISOR VOLT DETECTOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,180
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Product details
Overview
The MAX6411BS44 from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector IC designed for battery and power-supply monitoring in portable electronics. It features a factory-trimmed 4.38V threshold (±2.5% over –40°C to +85°C), 500nA supply current at 3V, guaranteed valid output down to VCC = 1.0V, and integrated manual reset input with 50kΩ internal pullup.
For engineers reviewing the MAX6411BS44 datasheet, MAX6411BS44 pinout, MAX6411BS44 application, or MAX6411BS44 equivalent, this device is selected for precision brown-out detection in space-constrained Li+-powered systems where quiescent current, reset reliability, and transient immunity are critical design parameters.
Technical Context
The MAX6411BS44 implements a precision bandgap reference comparator architecture with hysteresis of 9.5mV to prevent chatter during threshold crossing. Its open-drain output supports flexible logic interfacing - pulled up to any voltage ≤5.5V - enabling compatibility with mixed-voltage microcontrollers and PMICs.
It incorporates glitch rejection on both VCC (immune to transients <100ns) and MR inputs, and guarantees correct output state across VCC = 1.0V to 5.5V. Startup time is 88µs from VCC ramp, and propagation delay is 42µs (VCC falling) with 20mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal, ±2.5% over –40°C to +85°C - ensures reliable brown-out detection for 4.5V nominal rails |
| Supply Current | 500nA at 3V - enables multi-year battery life in always-on monitoring circuits |
| Output Type | Active-low open-drain - allows wired-OR configuration and level-shifting via external pullup |
| VCC Operating Range | 1.0V to 5.5V - supports operation during deep discharge and post-reset sequencing |
| MR Input | Internal 50kΩ pullup; TTL/CMOS compatible - simplifies manual reset implementation without external components |
| Hysteresis | 9.5mV - prevents false triggering near threshold under noisy supply conditions |
| Propagation Delay | 42µs (VCC falling, 20mV overdrive) - provides deterministic timing for system reset assertion |
Pinout & Package
MAX6411BS44 is housed in a 4-bump, 2×2 mm chip-scale package (UCSP-4), with bumps located on the bottom side. The package footprint is 0.8mm × 0.8mm with 0.5mm bump pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Ground reference | Primary return path for internal comparator and MR input; must be low-impedance connection |
| VCC (A2) | Supply and sense input | Monitored voltage rail; powers internal circuitry and sets detector reference point |
| MR (B2) | Manual reset input | Active-low control; asserts OUT when pulled below 0.2×VCC; internally pulled up to VCC |
| OUT (B1) | Open-drain output | Drives low when VCC < 4.38V; requires external pullup for logic-high state; sinks ≥1.2mA |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA supply current enables >10-year shelf-life battery monitoring in IoT sensors |
| Factory-trimmed VTH | 4.38V threshold set at wafer level - eliminates calibration and external resistor networks |
| Open-drain output | Supports mixed-voltage interface (e.g., 1.8V µP with 3.3V pullup) and bus sharing |
| VCC = 1.0V operation | Ensures valid reset assertion even during deep battery discharge or cold-start conditions |
| Transient immunity | Rejects VCC glitches <100ns - avoids spurious resets in electrically noisy environments |
Applications
| Li-ion Battery Protection | Wearable Health Monitor |
|---|---|
Use Scenario: Monitors cell voltage during discharge to trigger controlled shutdown before over-discharge damage occurs. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset signal to MCU when VBAT drops below 4.38V. Use Value: Prevents irreversible capacity loss by enforcing 4.2V–4.3V cutoff with ±2.5% accuracy across temperature. | Use Scenario: Ensures reliable boot and runtime supervision in compact ECG patch devices powered by coin cells. IC Role / Device Role / Timing Role: Brown-out detector providing clean reset pulse to ARM Cortex-M0+ during battery voltage sag. Use Value: 500nA ICC extends usable battery life beyond 12 months while maintaining sub-100µs response to voltage faults. |
| Portable Medical Instrument | Low-Power GPS Tracker |
Use Scenario: Supervises regulated 3.3V rail derived from boost converter in handheld ultrasound probe. IC Role / Device Role / Timing Role: System voltage supervisor asserting reset if main rail collapses due to load surge or capacitor aging. Use Value: 9.5mV hysteresis prevents oscillation during marginal rail conditions; open-drain output interfaces directly to FPGA reset controller. | Use Scenario: Detects battery depletion in asset-tracking tags operating intermittently on CR123A cells. IC Role / Device Role / Timing Role: Ultra-low-power voltage monitor enabling wake-up reset before GPS module fails to acquire satellites. Use Value: Valid operation down to VCC = 1.0V ensures reset assertion even after extended storage at low temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6411BS43-T | 4.30V threshold (vs. 4.38V); otherwise identical electrical specs and UCSP-4 package | Suitable for systems requiring earlier brown-out response on 4.35V nominal rails | Select when tighter margin below 4.35V is needed; same layout and BOM |
| TLV803EB33DBZR | 3.3V threshold, SOT-23-3 package, 1.6µA ICC, push-pull output | Higher supply current and fixed 3.3V trip limit; lacks MR input and VCC = 1.0V guarantee | Use only if lower cost and larger footprint are acceptable and 4.38V detection is not required |
Compared with MAX6411BS43-T and TLV803EB33DBZR, the MAX6411BS44 delivers precise 4.38V detection with industry-leading 500nA ICC and full-feature supervision (MR, open-drain, 1V operation), making it optimal for next-generation compact battery-powered systems demanding long service life and robust fault handling.
Availability
MAX6411BS44 is available at Aetrix Electronics and suitable for portable medical instruments, wearable health monitors, Li-ion battery protection circuits, and low-power GPS trackers requiring stable component supply and long-term manufacturability.
Supply support for MAX6411BS44 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.
The MAX6406–MAX6411 family was engineered specifically for ultra-low-power voltage supervision in space-constrained portable electronics, emphasizing nanoscale current draw, factory-trimmed accuracy, and robust transient immunity.
FAQ
What is the exact factory-trimmed threshold voltage of MAX6411BS44?
The MAX6411BS44 has a nominal reset threshold of 4.38V, with tolerance of ±2.5% over the full operating temperature range (–40°C to +85°C). This value is laser-trimmed at wafer test and confirmed in Table 1 of the datasheet under suffix "44*". The actual measured min/max at +25°C is 4.314V / 4.446V.
Does MAX6411BS44 require external components to operate?
No. The MAX6411BS44 operates autonomously with only VCC, GND, and optional MR connection. Its open-drain OUT requires an external pullup resistor for logic-high assertion, but no passive components are needed for threshold setting, calibration, or filtering - all functions are integrated.
Can MAX6411BS44 drive a microcontroller reset pin directly?
Yes - when used with an appropriate pullup resistor (e.g., 10kΩ to 3.3V), the MAX6411BS44's open-drain OUT sinks ≥1.2mA at VOL ≤0.4V, meeting standard CMOS/TTL reset input requirements. Its guaranteed valid output down to VCC = 1.0V ensures compatibility during deep brown-out conditions.
What is the maximum transient duration that MAX6411BS44 ignores on VCC?
At 10mV threshold overdrive (i.e., VCC = 4.37V), the MAX6411BS44 rejects transients up to ~400µs. As overdrive increases, allowable duration decreases - e.g., at 100mV overdrive (VCC = 4.28V), max rejection is ~40µs. This behavior is documented in Figure 4 ("Maximum Transient Duration vs. Threshold Overdrive").
Is MAX6411BS44 RoHS-compliant and lead-free?
Yes - the MAX6411BS44-T variant (tape-and-reel) is RoHS-compliant and lead-free. Per Maxim's ordering nomenclature, the "+" suffix denotes RoHS/lead-free packaging; standard MAX6411BS44-T is also lead-free per Analog Devices' material declarations and conforms to JEDEC J-STD-609A Class 1.
MAX6411BS44 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 4-WFBGA, CSPBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20µs Typical Propagation Delay
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-UCSP (1.05x1.05)
MAX6411BS44 FAQ
1.How can I place an order for MAX6411BS44 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6411BS44 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 MAX6411BS44 reliable?
The price and inventory of MAX6411BS44 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6411BS44 is usually 5 days.
3.What payment methods are accepted for MAX6411BS44?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6411BS44 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6411BS44?
MAX6411BS44 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6411BS44 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 MAX6411BS44?
For technical support, including MAX6411BS44 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6411BS44 requirements.
6.How does Aetrix verify that MAX6411BS44 is sourced from the original manufacturer or authorized distributors?
All MAX6411BS44 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 MAX6411BS44 meets industry standards.
7.What is the process for return or replacement of MAX6411BS44?
All MAX6411BS44 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6411BS44, 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 MAX6411BS44 part is unused and in its original packaging.
Return procedure for MAX6411BS44:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6411BS44 Tags
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MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
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V6340RSP3B+
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MCP130T-315I/TT
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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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