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Analog Devices Inc./Maxim Integrated MAX6406BS29-T
- Part No.:
- MAX6406BS29-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 4-WFBGA, CSPBGA
- Datasheet:
-
MAX6406BS29-T.pdf
- Description:
- IC SUPERVISOR VOLT DETECTOR
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6406BS29-T from Maxim Integrated is an ultra-low-power, factory-trimmed voltage detector IC designed for battery and power-supply monitoring in portable electronics. It features a 2.93V ±2.5% threshold (–40°C to +85°C), active-low push-pull output, 500nA supply current, manual reset input, and guaranteed valid output down to VCC = 1.0V - enabling reliable brownout detection in Li+-powered MP3 players and pagers.
For engineers reviewing the MAX6406BS29-T datasheet, MAX6406BS29-T pinout, MAX6406BS29-T application, or MAX6406BS29-T equivalent, key selection criteria include its 2.93V trip point, UCSP-4 package footprint, immunity to sub-100ns VCC transients, and compatibility with 1.0V–5.5V supply rails in space-constrained, battery-sensitive designs.
Technical Context
The MAX6406BS29-T implements a precision bandgap reference comparator with factory-laser-trimmed threshold accuracy of ±2.5% over –40°C to +85°C. Its internal 50kΩ MR pullup enables direct switch-to-ground manual reset without external components.
It uses a single-supply architecture with no external capacitors required; propagation delay is 20–42µs (VCC falling), startup time is 88µs, and it ignores fast negative-going VCC transients per the Maximum Transient Duration vs. Threshold Overdrive curve - critical for noisy DC/DC converter outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±2.5% (–40°C to +85°C); ensures accurate brownout detection across industrial temperature range |
| Supply Current | 500nA typical at +25°C; extends battery life in always-on monitoring applications |
| Output Type | Active-low push-pull; drives logic directly without external pullup, simplifying PCB layout |
| Operating Voltage | 1.0V to 5.5V; supports valid output assertion even during deep brownout conditions |
| MR Input | Internal 50kΩ pullup; allows momentary switch interface with no external resistor needed |
| Propagation Delay | 20–42µs (VCC falling); provides deterministic timing for system reset sequencing |
| Hysteresis | 6.3mV; prevents chatter near threshold during slow-ramping supplies |
Pinout & Package
Package: UCSP-4 (4-bump, 2mm × 2mm chip-scale package with bottom-mounted solder bumps).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection |
| A2 | VCC | Primary supply and monitored voltage input; powers device and serves as detection source |
| B1 | OUT | Active-low push-pull output; sinks current when asserted (VCC < VTH), high-impedance otherwise |
| B2 | MR | Active-low manual reset; internal 50kΩ pullup to VCC; asserts OUT when pulled low |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA enables multi-year battery operation in maintenance-free portable devices |
| Factory-trimmed threshold | 2.93V with ±2.5% tolerance eliminates calibration overhead and external resistors |
| Guaranteed output validity | OUT remains correctly asserted down to VCC = 1.0V - critical for low-voltage Li+ discharge monitoring |
| Transient immunity | Rejects VCC glitches under 100ns duration, improving reliability in switching regulator environments |
| No external components | Integrated reference, comparator, and pullup eliminate BOM count and board area |
Applications
| Cell Phones | MP3 Players |
|---|---|
Use Scenario: Monitoring Li-ion battery voltage during discharge to prevent deep depletion and enable graceful shutdown. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset signal when battery drops below 2.93V. Use Value: Prevents data corruption and flash memory write errors by triggering controlled power-down before voltage collapse. | Use Scenario: Supervising regulated 3.0V supply derived from boost converter in flash-based audio player. IC Role / Device Role / Timing Role: Brownout detector with 20–42µs propagation delay ensuring timely reset before supply instability affects DAC or codec. Use Value: Eliminates audible pop/click artifacts and firmware lockups caused by undervoltage operation. |
| Pagers | PDAs |
Use Scenario: Detecting end-of-life battery condition in two-way pagers operating on primary alkaline cells. IC Role / Device Role / Timing Role: Low-current supervisor with manual reset override for field service diagnostics. Use Value: Enables battery replacement alert and safe state retention using only 500nA standby draw. | Use Scenario: Monitoring main 3.3V rail in handheld PDA with integrated GPS and Wi-Fi modules. IC Role / Device Role / Timing Role: System voltage monitor interfacing directly to processor's nRESET pin via push-pull output. Use Value: Reduces component count versus open-drain alternatives - no external pullup resistor required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6406BS28-T | 2.80V threshold (±2.5%), identical UCSP-4 package and pinout | Suitable where earlier brownout action is required (e.g., higher-voltage battery chemistries) | Select when system requires reset at 2.80V instead of 2.93V; drop-in replacement with no layout change |
| TLV803EB29DBZR | 2.93V threshold, SOT-23-3 package, 1.6µA supply current, no MR input | Lacks manual reset; higher ICC limits use in ultra-low-power applications | Choose only if board space permits SOT-23 and MR functionality is unnecessary |
Compared with MAX6406BS28-T, the MAX6406BS29-T provides later reset timing for improved battery utilization; versus TLV803EB29DBZR, it delivers 3.2× lower supply current and integrated MR - essential for compact, long-life portable systems.
Availability
MAX6406BS29-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, cell phones, and MP3 players requiring stable component supply and long-term lifecycle support.
Supply support for MAX6406BS29-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 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 supervision in space-constrained portable electronics - prioritizing nanoscale current, minimal footprint (UCSP-4), and factory-trimmed accuracy without external components.
FAQ
What is the exact reset threshold voltage of the MAX6406BS29-T?
The MAX6406BS29-T has a nominal reset threshold of 2.93V at +25°C, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +85°C). This corresponds to a minimum threshold of 2.857V and maximum of 3.000V under worst-case conditions, as specified in Table 1 of the datasheet.
Does the MAX6406BS29-T require external components to operate?
No, the MAX6406BS29-T requires no external components. It integrates a precision bandgap reference, comparator, 50kΩ internal pullup on the MR pin, and push-pull output driver. Only VCC, GND, MR (optional), and OUT connections are needed - eliminating resistors, capacitors, or trimming networks.
What package type and dimensions does the MAX6406BS29-T use?
The MAX6406BS29-T uses a UCSP-4 (Ultra Compact Silicon Package) with 4 solder bumps arranged in a 2mm × 2mm array. The package height is approximately 0.6mm, and bump pitch is 0.5mm. It is not pin-compatible with leaded packages and requires specialized reflow and inspection processes.
Can the MAX6406BS29-T operate reliably below 1.8V supply?
Yes, the MAX6406BS29-T is fully specified down to VCC = 1.0V. Its output remains valid and correctly asserted (low) when VCC falls below 2.93V, even at 1.0V - a key feature enabling use with deeply discharged Li+ batteries or low-voltage microcontrollers.
How does the manual reset (MR) function work on the MAX6406BS29-T?
The MR pin on the MAX6406BS29-T is an active-low input with an internal 50kΩ pullup to VCC. Pulling MR low asserts the OUT pin (drives it low) regardless of VCC level. When MR is released (left open or tied to VCC), normal voltage-monitoring behavior resumes. A momentary switch from MR to GND provides hardware reset capability.
MAX6406BS29-T 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:
- 2.93V
- 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)
MAX6406BS29-T FAQ
1.How can I place an order for MAX6406BS29-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6406BS29-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 MAX6406BS29-T reliable?
The price and inventory of MAX6406BS29-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6406BS29-T is usually 5 days.
3.What payment methods are accepted for MAX6406BS29-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6406BS29-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6406BS29-T?
MAX6406BS29-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6406BS29-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 MAX6406BS29-T?
For technical support, including MAX6406BS29-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6406BS29-T requirements.
6.How does Aetrix verify that MAX6406BS29-T is sourced from the original manufacturer or authorized distributors?
All MAX6406BS29-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 MAX6406BS29-T meets industry standards.
7.What is the process for return or replacement of MAX6406BS29-T?
All MAX6406BS29-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6406BS29-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 MAX6406BS29-T part is unused and in its original packaging.
Return procedure for MAX6406BS29-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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