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Analog Devices Inc./Maxim Integrated MAX6407BS22
- Part No.:
- MAX6407BS22
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 4-WFBGA, CSPBGA
- Datasheet:
-
MAX6407BS22.pdf
- Description:
- IC SUPERVISOR VOLT DETECTOR
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
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Product details
Overview
MAX6407BS22 from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector IC designed for battery and power-supply monitoring in portable electronics. It features a factory-trimmed 2.20V threshold (±2.5% over −40°C to +85°C), 500nA supply current, and guaranteed valid output down to VCC = 1.0V - enabling reliable brownout detection in Li⁺-powered MP3 players and PDAs.
For engineers reviewing the MAX6407BS22 datasheet, MAX6407BS22 pinout, MAX6407BS22 application, or MAX6407BS22 equivalent, this device supports critical low-voltage supervision where minimal quiescent current, precise reset assertion, and manual reset integration are required in space-constrained UCSP-packaged systems.
Technical Context
The MAX6407BS22 uses a precision bandgap reference comparator architecture with internal trimming to deliver stable 2.20V detection across temperature. Its active-high push-pull output asserts logic high when VCC falls below threshold and remains valid down to 1.0V, eliminating external pull-up components.
It incorporates a manual reset input (MR) with internal 50kΩ pullup and 1µs minimum pulse width support, and rejects fast VCC transients up to 100ns - ensuring immunity to noise-induced false resets in battery-powered environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.20V ±2.5% (−40°C to +85°C); enables accurate brownout detection for 2.4V nominal Li⁺ systems |
| Supply Current | 500nA typical at +25°C; extends battery life in always-on supervision circuits |
| Output Type | Active-high push-pull; drives logic directly without external pull-up resistor |
| VCC Validity Range | Operates and guarantees correct output state down to VCC = 1.0V; supports deep brownout recovery |
| MR Input | Internal 50kΩ pullup; accepts TTL/CMOS levels; requires ≥1µs low pulse to assert reset |
| Propagation Delay | 42µs typical (VCC falling); ensures timely system reset before critical undervoltage |
| Hysteresis | 6.3mV; prevents oscillation during slow VCC recovery near threshold |
Pinout & Package
MAX6407BS22 is housed in a 4-bump (2×2 mm) UCSP chip-scale package - footprint-compatible with SC70 but 70% smaller. The package has no leads; solder bumps contact PCB pads directly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Ground reference | Primary return path for detector and MR circuitry; must be low-impedance |
| VCC (A2) | Supply and sense input | Monitored voltage rail; powers internal circuitry and sets detection reference |
| OUT (B1) | Active-high push-pull output | Drives high when VCC < 2.20V; sinks current when deasserted; no external pull-up needed |
| MR (B2) | Manual reset input | Active-low; internally pulled up to VCC; momentary GND connection triggers reset |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA enables multi-year battery operation in standby supervision |
| Factory-trimmed VTH | 2.20V threshold with ±2.5% accuracy eliminates calibration overhead |
| Valid output at 1.0V | Ensures deterministic reset behavior even during deep discharge |
| MR with internal pullup | Reduces BOM count by removing external resistor for manual reset |
| Transient immunity | Rejects ≤100ns VCC glitches, preventing spurious resets in noisy environments |
Applications
| Cell Phones | MP3 Players |
|---|---|
Use Scenario: Monitoring Li⁺ battery voltage during sleep mode to prevent data corruption on power collapse. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high reset signal to baseband processor upon VBAT drop below 2.20V. Use Value: Prevents firmware lockup and memory corruption by guaranteeing clean reset before undervoltage threshold breach. | Use Scenario: Ensuring safe shutdown of audio codec and flash memory when battery reaches end-of-discharge. IC Role / Device Role / Timing Role: Brownout detector triggering microcontroller-initiated graceful shutdown sequence via active-high OUT signal. Use Value: Eliminates need for software polling; reduces system power by enabling hardware-triggered low-power state entry. |
| Pagers | PDAs |
Use Scenario: Maintaining real-time clock integrity and SRAM retention during intermittent battery replacement. IC Role / Device Role / Timing Role: Supervisory IC holding reset active while VCC dips during hot-swap, then releasing after stable 2.20V restoration. Use Value: Preserves volatile context across brief power interruptions without requiring backup capacitors. | Use Scenario: Coordinating reset timing between ARM core, SDRAM, and display controller during cold start. IC Role / Device Role / Timing Role: Primary voltage monitor providing synchronized active-high reset assertion across multiple voltage domains. Use Value: Guarantees deterministic power-on sequencing without external timing components or FPGA logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6406BS22 | Same 2.20V threshold and UCSP-4 package, but active-low push-pull output | Requires inverted logic handling in reset chain; incompatible with direct active-high MCU reset inputs | Select only if target microcontroller accepts active-low reset and board layout accommodates output polarity |
| TLV803EB22DBZR | 2.2V threshold, SOT-23-3, 900nA ICC, active-low open-drain output | Larger footprint, requires external pull-up, higher supply current, and different logic polarity | Choose for legacy SOT-23 compatibility or when open-drain flexibility (e.g., wired-OR reset bus) is required |
Compared with MAX6406BS22 and TLV803EB22DBZR, the MAX6407BS22 uniquely delivers active-high push-pull output in a 2×2 mm UCSP, enabling direct MCU reset interface with lowest possible quiescent current - critical for miniaturized, battery-critical designs.
Availability
MAX6407BS22 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, cell phones, and MP3 players requiring stable component supply with long-term manufacturability and RoHS-compliant variants.
Supply support for MAX6407BS22 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 analog and mixed-signal ICs for power, sensing, and interface applications.
The MAX6406–MAX6411 family was designed specifically for ultra-low-power voltage supervision in space-constrained portable devices, emphasizing nanoscale current consumption and factory-trimmed accuracy without external components.
FAQ
What is the exact reset threshold voltage of the MAX6407BS22?
The MAX6407BS22 has a nominal reset threshold of 2.20V, with a tolerance of ±2.5% over the full operating temperature range (−40°C to +85°C). At +25°C, the typical threshold is 2.200V, with min/max values of 2.167V and 2.233V respectively - confirmed by factory trimming and documented in Table 1 of the datasheet.
Does the MAX6407BS22 require an external pull-up resistor on its OUT pin?
No, the MAX6407BS22 does not require an external pull-up resistor because it features an active-high push-pull output. The internal driver actively sources current when asserting high and sinks current when deasserting low - enabling direct interface with standard CMOS inputs without additional components.
Can the MAX6407BS22 operate reliably below 1.8V supply voltage?
Yes, the MAX6407BS22 is guaranteed to maintain correct output logic state down to VCC = 1.0V, per the Absolute Maximum Ratings and Electrical Characteristics tables. This allows robust operation during deep battery discharge in Li⁺ systems where voltage may fall below 1.8V before cutoff.
What is the function of the MR pin on the MAX6407BS22?
The MR (Manual Reset) pin on the MAX6407BS22 is an active-low input with an internal 50kΩ pullup to VCC. Driving MR low for ≥1µs forces the OUT pin high regardless of VCC level, providing hardware-initiated reset capability - useful for user-triggered reboot or test-mode entry without relying on software.
Is the MAX6407BS22 compatible with lead-free reflow processes?
Yes, the MAX6407BS22 variant with suffix "+T" (e.g., MAX6407BS22+T) is RoHS-compliant and qualified for lead-free reflow with peak temperatures up to +235°C, as specified in the Package Information section. Standard "-T" tape-and-reel versions without "+" are not lead-free unless explicitly marked.
MAX6407BS22 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:
- 2.2V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- 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)
MAX6407BS22 FAQ
1.How can I place an order for MAX6407BS22 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6407BS22 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 MAX6407BS22 reliable?
The price and inventory of MAX6407BS22 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6407BS22 is usually 5 days.
3.What payment methods are accepted for MAX6407BS22?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6407BS22 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6407BS22?
MAX6407BS22 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6407BS22 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 MAX6407BS22?
For technical support, including MAX6407BS22 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6407BS22 requirements.
6.How does Aetrix verify that MAX6407BS22 is sourced from the original manufacturer or authorized distributors?
All MAX6407BS22 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 MAX6407BS22 meets industry standards.
7.What is the process for return or replacement of MAX6407BS22?
All MAX6407BS22 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6407BS22, 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 MAX6407BS22 part is unused and in its original packaging.
Return procedure for MAX6407BS22:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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