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Analog Devices Inc./Maxim Integrated MAX6406BS24+T
- Part No.:
- MAX6406BS24+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 4-WFBGA, CSPBGA
- Datasheet:
-
MAX6406BS24+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 4UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,673
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Product details
Overview
The MAX6406BS24+T from Maxim Integrated is an ultra-low-power voltage detector IC designed for battery and power-supply monitoring in portable systems. It features a factory-trimmed 2.400V detection threshold (±2.5% over -40°C to +85°C), active-low push-pull output, 500nA supply current at 3V, manual reset input (MR), and guaranteed valid output down to VCC = 1.0V. It is used in battery-backed microcontroller supervision where precise, low-quiescent monitoring of 2.4V system rails is required.
For engineers reviewing the MAX6406BS24+T datasheet, MAX6406BS24+T pinout, MAX6406BS24+T application, or MAX6406BS24+T equivalent, key selection considerations include its 2.400V trip point, UCSP-4 package footprint, 500nA quiescent current, immunity to sub-100ns VCC transients, and compatibility with 1.0V–5.5V supply operation.
Technical Context
The MAX6406BS24+T integrates a precision bandgap reference and comparator trimmed to 2.400V nominal threshold, with hysteresis of 6.3mV and temperature coefficient of 40ppm/°C. Its internal 50kΩ MR pullup enables direct switch-to-ground connection without external components.
It operates across VCC = 1.2V to 5.5V (–40°C to +85°C), asserts OUT low when VCC falls below VTH, and maintains correct logic state down to 1.0V. Propagation delay is 20–42µs depending on overdrive, and startup time from VCC = 0 to VTH is 88µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.400V ±2.5% (–40°C to +85°C); ensures reliable brown-out detection for 2.4V rails |
| Supply Current | 500nA typical at 3V; enables multi-year battery life in coin-cell–powered devices |
| Output Type | Active-low push-pull; drives logic loads directly without external pullup resistor |
| Manual Reset Input | MR with 50kΩ internal pullup; supports momentary switch interface with no external components |
| Operating Voltage Range | 1.2V to 5.5V (–40°C to +85°C); supports supervision of Li-ion, NiMH, and regulated 3.3V/5V supplies |
| Propagation Delay | 20–42µs (VCC falling); fast response to supply droop while rejecting <100ns glitches |
| Package | UCSP-4 (2mm × 2mm, 4-bump chip-scale); 70% smaller than SC70, ideal for space-constrained PCBs |
Pinout & Package
MAX6406BS24+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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | GND | Ground reference for internal comparator and bandgap; must be connected to system ground plane |
| A2 | VCC | Power supply input and monitored voltage rail; operates from 1.2V to 5.5V |
| B1 | OUT | Active-low push-pull output; sinks current when asserted (VOL ≤ 0.3V @ 1.6mA), sources current when deasserted (VOH ≥ 0.8×VCC) |
| B2 | MR | Active-low manual reset input; internally pulled up to VCC via 50kΩ; assert low to force OUT low regardless of VCC |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery life in always-on supervision circuits; enables use in energy-harvesting and IoT edge nodes |
| Factory-trimmed 2.400V threshold | Eliminates external resistor dividers and calibration; reduces BOM count and layout area |
| Guaranteed operation down to VCC = 1.0V | Ensures deterministic reset behavior during deep brown-out or battery depletion scenarios |
| Immunity to short VCC transients | Rejects noise spikes <100ns duration; prevents false resets in electrically noisy portable environments |
| Integrated MR pullup resistor | Reduces external component count; simplifies manual reset implementation with single SPST switch |
Applications
| Smartphone Power Supervision | Wearable Health Monitor |
|---|---|
Use Scenario: Monitoring the 2.4V backup rail powering real-time clock and SRAM during main battery removal or deep discharge. IC Role / Device Role / Timing Role: Voltage detector asserting reset to preserve data integrity and prevent corrupted RTC registers. Use Value: 500nA quiescent current minimizes drain on backup coin cell; 2.400V threshold matches common RTC supply specifications. |
Use Scenario: Supervising the 2.4V regulated output of a low-noise LDO feeding an ultra-low-power MCU and optical sensor. IC Role / Device Role / Timing Role: Brown-out detector triggering controlled shutdown before sensor or memory corruption occurs. Use Value: Guaranteed 1.0V operation ensures reset assertion even as battery voltage collapses; UCSP-4 footprint saves critical board space. |
| Bluetooth LE Beacon | Industrial Sensor Node |
Use Scenario: Detecting undervoltage on a 2.4V lithium-thionyl chloride primary cell powering intermittent BLE transmission. IC Role / Device Role / Timing Role: Supply monitor enabling firmware to abort transmission and enter deep sleep before voltage collapse. Use Value: 20–42µs propagation delay allows timely intervention; 500nA ICC preserves multi-year shelf life. |
Use Scenario: Supervising the 2.4V auxiliary rail in a battery-backed industrial controller operating in extended temperature range. IC Role / Device Role / Timing Role: System-level voltage supervisor ensuring safe boot and runtime reset under wide-temperature conditions. Use Value: ±2.5% threshold accuracy over –40°C to +85°C eliminates need for field recalibration; MR input supports maintenance-mode reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB24DBZR | 2.4V threshold, SOT-23-3, 1.8µA ICC, no MR input | Lacks manual reset; higher supply current limits battery lifetime | Select when MR is unnecessary and SOT-23 footprint is preferred over UCSP |
| TPS3808G24DBVR | 2.4V threshold, SOT-23-6, 1.1µA ICC, MR input, adjustable delay | Higher ICC and larger package; includes programmable reset timeout not present in MAX6406BS24+T | Select when reset timeout functionality is required and 1.1µA ICC is acceptable |
Compared with TLV803EB24DBZR and TPS3808G24DBVR, the MAX6406BS24+T delivers the lowest quiescent current (500nA), smallest footprint (UCSP-4), and integrated MR pullup-making it optimal for space- and energy-constrained portable designs where minimal BOM and deterministic 1.0V operation are critical.
Availability
MAX6406BS24+T is available at Aetrix Electronics and suitable for portable electronics, wearable health monitors, and Bluetooth LE beacon designs requiring stable component supply, long-term manufacturability, and consistent parametric performance.
Supply support for MAX6406BS24+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 applications.
The MAX6406–MAX6411 family was designed specifically for ultra-low-power voltage monitoring in battery-powered portable equipment, emphasizing minimal current draw, small form factor, and factory-trimmed accuracy without external components.
FAQ
What is the exact detection threshold voltage of the MAX6406BS24+T?
The MAX6406BS24+T has a nominal detection threshold of 2.400V, with tolerance of ±2.5% over the full operating temperature range (–40°C to +85°C). At +25°C, the threshold is specified as 2.364V (min) to 2.436V (max), per Table 1 in the datasheet. This value is factory-trimmed and does not require external calibration.
Does the MAX6406BS24+T support operation below 1.2V?
Yes-the MAX6406BS24+T guarantees correct output logic state down to VCC = 1.0V, even though its specified operating range begins at 1.2V. This ensures reliable reset assertion during deep brown-out events, such as final battery depletion, where VCC may dip below 1.2V but remain above 1.0V.
Can the MAX6406BS24+T be used without connecting the MR pin?
Yes-the MR pin of the MAX6406BS24+T features an internal 50kΩ pullup resistor to VCC, so it may be left unconnected if manual reset functionality is not required. Leaving MR floating or tied to VCC disables the manual reset function while preserving normal voltage-detection operation.
What is the maximum transient duration the MAX6406BS24+T can reject at 20mV overdrive?
At a threshold overdrive (VTH – VCC) of 20mV, the MAX6406BS24+T rejects negative-going transients up to approximately 120µs in duration, as shown in Figure 4 (MAX6406-11 toc04) of the datasheet. This immunity prevents false resets caused by brief supply dips or switching noise.
Is the MAX6406BS24+T pin-compatible with other members of the MAX6406–MAX6411 family?
No-while all MAX6406–MAX6411 devices share the same UCSP-4 package and pinout, the MAX6406BS24+T is not pin-compatible with variants having different output types (e.g., MAX6407BS24+T active-high, MAX6408BS24+T open-drain) because OUT pin behavior and drive capability differ. Electrical substitution requires verification of logic polarity and load requirements.
MAX6406BS24+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:
- 2.4V
- Output:
- Push-Pull, Totem Pole
- 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)
MAX6406BS24+T FAQ
1.How can I place an order for MAX6406BS24+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6406BS24+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 MAX6406BS24+T reliable?
The price and inventory of MAX6406BS24+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6406BS24+T is usually 5 days.
3.What payment methods are accepted for MAX6406BS24+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6406BS24+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6406BS24+T?
MAX6406BS24+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6406BS24+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 MAX6406BS24+T?
For technical support, including MAX6406BS24+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6406BS24+T requirements.
6.How does Aetrix verify that MAX6406BS24+T is sourced from the original manufacturer or authorized distributors?
All MAX6406BS24+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 MAX6406BS24+T meets industry standards.
7.What is the process for return or replacement of MAX6406BS24+T?
All MAX6406BS24+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6406BS24+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 MAX6406BS24+T part is unused and in its original packaging.
Return procedure for MAX6406BS24+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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