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Product Detailed Parameters
- Description：IC BAT MON MULT-CHEM 2C SOT143-4
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Function：Battery Monitor
- Battery Chemistry：Multi-Chemistry
- Number of Cells：2
- Fault Protection：-
- Interface：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-253-4, TO-253AA
- Supplier Device Package：SOT-23-4
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Overview
The MAX6431FJUS is a low-power, dual-level battery monitor from the Maxim Integrated MAX6427–MAX6438 family. It features factory-trimmed thresholds for precise voltage monitoring without external components. The device provides two independent low-battery output indicators to signal distinct power states. It operates with minimal supply current and includes an internal timeout period to ensure system stability before enabling power-converter or microprocessor activity upon voltage recovery.
Feature Summary
- Dual low-battery output indicators for distinguishing between weak and empty battery conditions
- Factory-trimmed threshold options eliminating the need for external resistors
- Internal hysteresis and minimum timeout period to prevent output oscillation during voltage transitions
Applications
- Monitoring single lithium-ion cells in portable electronics
- Monitoring multicell alkaline, NiCd, or NiMH power supplies
- Indicating battery status for microprocessor-based systems
Procurement Notes
Verify the specific suffix 'FJUS' against official Maxim Integrated documentation to confirm pinout, package type (SOT-23), and exact threshold values. Ensure compatibility with your system's voltage requirements and logic levels. Confirm RoHS compliance status as indicated in the component datasheet.
Selection Notes
Select this component when dual-stage battery monitoring is required without external threshold-setting resistors. It is suitable for applications needing distinct signals for low-power mode operation versus system disablement. Consider the SOT-23 package size for space-constrained designs.
Part Context
This part belongs to the MAX6427–MAX6438 series of single/dual-level battery monitors. These devices are designed for low-power applications, offering either factory-trimmed or user-adjustable thresholds. The MAX6431 variant specifically provides dual outputs for comprehensive battery state indication.
FAQ
What is the function of the dual low-battery outputs?
The dual outputs allow the system to distinguish between three battery conditions: good (normal mode), weak (low-power mode), and empty (system disable).
How does the device handle voltage recovery?
When the supply voltage rises above the high threshold, the low-battery output deasserts following a minimum 140ms timeout period to ensure voltage stabilization.
