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Analog Devices Inc./Maxim Integrated MAX6411BS40+T
- Part No.:
- MAX6411BS40+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 4-WFBGA, CSPBGA
- Datasheet:
-
MAX6411BS40+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 4UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,282
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Product details
Overview
MAX6411BS40+T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector with factory-trimmed 4.00V threshold (±2.5% over -40°C to +85°C), 500nA supply current, and guaranteed output validity down to VCC = 1.0V. It monitors regulated system or battery voltages in portable electronics and asserts reset when supply drops below threshold.
For engineers reviewing the MAX6411BS40+T datasheet, MAX6411BS40+T pinout, MAX6411BS40+T application, or MAX6411BS40+T equivalent, this device serves as a precision, low-quiescent-supply supervisor for space-constrained, battery-sensitive designs requiring reliable power-on reset and manual reset capability.
Technical Context
The MAX6411BS40+T implements a precision bandgap reference comparator with hysteresis of 9.5mV and temperature coefficient of 40ppm/°C, enabling stable trip-point performance across industrial temperature range. Its open-drain output sinks up to 1.6mA at VCC ≥ 2.1V while remaining valid down to 1.0V supply.
It features an internal 50kΩ pullup on the MR input, accepts TTL/CMOS-compatible logic levels, and rejects transients ≤100ns. Propagation delay is 20–42µs (VCC falling) and immune to fast negative-going VCC glitches per the Maximum Transient Duration vs. Threshold Overdrive curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V nominal, ±2.5% over -40°C to +85°C - ensures accurate brown-out detection for 3.3V/3.6V systems |
| Supply Current | 500nA typical at VCC = 3V - enables multi-year battery life in always-on monitoring applications |
| Output Type | Active-low open-drain - allows flexible pullup to any voltage ≤5.5V and wired-OR reset bus implementation |
| MR Input | Internal 50kΩ pullup to VCC, 1µs minimum pulse width - simplifies manual reset circuitry with no external resistor required |
| Operating Voltage Range | 1.2V to 5.5V (min/max over temp) - supports operation during deep brown-out and compatibility with Li+ and multi-rail systems |
| Hysteresis | 9.5mV - prevents chatter near threshold during slow or noisy supply recovery |
| Propagation Delay | 20–42µs (VCC falling) - provides timely reset assertion without excessive latency in critical power-fail scenarios |
Pinout & Package
MAX6411BS40+T is housed in a 4-bump, 2mm × 2mm UCSP (Ultra-Compact Silicon Package) with bottom-side solder bumps. The package is lead-free and RoHS-compliant, optimized for high-density PCB layouts in portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | GND | Ground reference for internal comparator and MR input; must be connected to system ground plane for stable threshold accuracy |
| A2 | VCC | Main supply input and monitored voltage source; powers internal circuitry and sets operating range (1.2V–5.5V) |
| B1 | OUT | Active-low open-drain output; requires external pullup; sinks current when VCC < 4.00V to assert system reset |
| B2 | MR | Active-low manual reset input; internally pulled up to VCC; drives OUT low when asserted, overriding voltage detection |
Key Features
| Feature | Design Value |
|---|---|
| 4-bump UCSP package (2mm × 2mm) | Reduces board area by 70% vs. SC70; enables placement in tight spaces like wearable sensor modules |
| ±2.5% threshold accuracy (-40°C to +85°C) | Eliminates need for external calibration or trimming resistors in production test flow |
| Guaranteed output validity to VCC = 1.0V | Ensures deterministic reset behavior even during deep undervoltage conditions common in battery discharge |
| Immunity to ≤100ns VCC transients | Prevents false resets caused by switching noise or load-dump events without requiring additional filtering |
| No external components required | Reduces BOM count, assembly cost, and failure modes-single-chip solution for basic power supervision |
Applications
| Smartphone Power Supervision | Wireless Headset Battery Monitoring |
|---|---|
Use Scenario: Monitors main Li-ion battery voltage (3.6V nominal) to trigger controlled shutdown before deep discharge. IC Role / Device Role / Timing Role: Voltage detector providing active-low reset signal to baseband processor upon VBAT drop below 4.00V. Use Value: Prevents data corruption and extends battery cycle life by enforcing safe cutoff at precise 4.00V threshold with 9.5mV hysteresis. |
Use Scenario: Supervises regulated 3.3V rail powering Bluetooth SoC and audio codec in compact earbuds. IC Role / Device Role / Timing Role: Open-drain supervisor asserting shared reset line when 3.3V LDO output falls below 4.00V (indicating upstream supply failure). Use Value: Enables fail-safe recovery via wired-OR reset bus without level-shifting; 500nA quiescent current preserves standby time. |
| Portable Medical Glucose Meter | Industrial Handheld Scanner |
Use Scenario: Ensures reliable power-on initialization and brown-out recovery in Class II medical device powered by coin cell. IC Role / Device Role / Timing Role: Primary reset generator tied to 3.0V system rail; MR pin used for user-initiated self-test reset. Use Value: Internal 50kΩ MR pullup eliminates discrete resistor; ±2.5% threshold tolerance meets IEC 60601-1 margin requirements. |
Use Scenario: Supervises dual 3.3V/5.0V rails in ruggedized barcode scanner exposed to ESD and thermal cycling. IC Role / Device Role / Timing Role: Voltage monitor with transient immunity rejecting motor-switching noise on VCC line. Use Value: 100ns glitch rejection prevents spurious resets during motor actuation; UCSP package withstands mechanical shock per MIL-STD-883. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB33DBZR | 3.3V fixed threshold, SOT-23-3, 1.6µA ICC, push-pull active-low output | Lacks manual reset input and open-drain flexibility; higher supply current limits battery life | Choose when board space allows SOT-23 and 3.3V threshold suffices without MR or wired-OR capability |
| TPS3808G33DBVR | 3.3V threshold, SOT-23-6, 1.1µA ICC, push-pull active-low, adjustable delay via capacitor | Requires external timing capacitor; no open-drain option; larger footprint than UCSP | Prefer when programmable reset timeout is needed and 3.3V threshold aligns with system rail |
Compared with TLV803EB33DBZR and TPS3808G33DBVR, the MAX6411BS40+T offers lower quiescent current (500nA vs. >1µA), 4.00V threshold matching 3.6V Li+ end-of-discharge, open-drain output for bus sharing, and integrated MR-making it uniquely suited for ultra-low-power, space-constrained, multi-reset-system designs.
Availability
MAX6411BS40+T is available at Aetrix Electronics and suitable for portable medical devices, wireless audio endpoints, handheld industrial scanners, and battery-powered IoT sensors requiring stable component supply with long-term lifecycle support.
Supply support for MAX6411BS40+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer markets.
The MAX6406–MAX6411 family was designed specifically for ultra-low-power voltage supervision in space- and energy-constrained portable electronics, delivering precision thresholds, minimal footprint, and robust transient immunity without external components.
FAQ
What is the exact reset threshold voltage of the MAX6411BS40+T?
The MAX6411BS40+T has a factory-trimmed nominal reset threshold of 4.00V, with tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). At +25°C, the threshold is specified between 3.940V (min) and 4.060V (max), per Table 1 in the datasheet. This 4.00V point targets systems using 3.6V Li+ batteries nearing end-of-discharge.
Does the MAX6411BS40+T require an external pullup resistor on its OUT pin?
Yes, the MAX6411BS40+T features an active-low open-drain OUT pin and requires an external pullup resistor to a valid logic-high voltage (≤5.5V). The value must be selected to ensure VOL ≤ 0.4V when sinking 1.6mA (per Electrical Characteristics), typically 10kΩ–100kΩ depending on bus capacitance and drive strength requirements.
Can the MAX6411BS40+T operate reliably at VCC = 1.2V?
Yes, the MAX6411BS40+T is fully specified to operate with VCC as low as 1.2V (minimum over temperature) and guarantees correct output logic state down to VCC = 1.0V. This ensures deterministic reset assertion during deep brown-out conditions common in battery-powered systems approaching exhaustion.
What is the function of the MR pin on the MAX6411BS40+T, and does it need an external pullup?
The MR (Manual Reset) pin on the MAX6411BS40+T is an active-low input that forces the OUT pin low regardless of VCC level. It includes an internal 50kΩ pullup resistor to VCC, so no external pullup is required. Leaving MR unconnected defaults to inactive (high); pulling it low via switch or logic asserts reset immediately and holds it until MR is released.
Is the MAX6411BS40+T compatible with lead-free reflow processes?
Yes, the MAX6411BS40+T uses a lead-free, RoHS-compliant UCSP package qualified for standard Pb-free reflow profiles, including peak temperatures up to +235°C. The bump-reflow specification confirms compatibility with IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) 1 handling and reflow conditions.
MAX6411BS40+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 4-WFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4V
- 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)
MAX6411BS40+T FAQ
1.How can I place an order for MAX6411BS40+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6411BS40+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 MAX6411BS40+T reliable?
The price and inventory of MAX6411BS40+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6411BS40+T is usually 5 days.
3.What payment methods are accepted for MAX6411BS40+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6411BS40+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6411BS40+T?
MAX6411BS40+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6411BS40+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 MAX6411BS40+T?
For technical support, including MAX6411BS40+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6411BS40+T requirements.
6.How does Aetrix verify that MAX6411BS40+T is sourced from the original manufacturer or authorized distributors?
All MAX6411BS40+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 MAX6411BS40+T meets industry standards.
7.What is the process for return or replacement of MAX6411BS40+T?
All MAX6411BS40+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6411BS40+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 MAX6411BS40+T part is unused and in its original packaging.
Return procedure for MAX6411BS40+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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