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Product Detailed Parameters
- Description：IC BATT MON MULT-CHEM 1C SOT23-3
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Function：Battery Monitor
- Battery Chemistry：Multi-Chemistry
- Number of Cells：1
- Fault Protection：-
- Interface：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
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Overview
The MAX6429ORUR is a low-power, single-level battery monitor with internal hysteresis, manufactured by Maxim Integrated. It provides a low-battery output indicator to signal three battery conditions: good, weak, or empty. The device features factory-trimmed thresholds and is designed for monitoring single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies. When the supply voltage drops below the specified low threshold, the output asserts; it deasserts after rising above the high threshold following a minimum 140ms timeout. This timeout ensures supply stabilization before enabling power-converter or microprocessor activity.
Feature Summary
- Integrates internal hysteresis to prevent output oscillation during voltage transitions near threshold levels.
- Provides a dedicated low-battery output that asserts when voltage falls below the low threshold and deasserts upon recovery.
- Includes a guaranteed minimum timeout period to ensure supply voltages stabilize before system activity resumes.
Applications
- Monitoring single lithium-ion (Li+) cells in portable electronic devices.
- Monitoring multicell alkaline, NiCd, or NiMH power supplies.
- Indicating battery status to microprocessors for normal, low-power, or disabled system modes.
Procurement Notes
Verify the specific suffix 'ORUR' against official Maxim Integrated documentation to confirm package type and temperature range. Ensure compatibility with the required factory-trimmed threshold values for the application. Confirm RoHS compliance and lead-free status as per the datasheet specifications.
Selection Notes
Select this component for applications requiring precise, factory-calibrated battery monitoring without user-adjustable thresholds. It is suitable for systems needing reliable low-battery detection with built-in noise immunity via hysteresis. Consider the SOT-23 package size for space-constrained designs.
Part Context
The MAX6429 belongs to the MAX6427–MAX6438 family of low-power battery monitors. This family includes variants with single or dual low-battery outputs and options for either factory-trimmed or user-adjustable thresholds. The MAX6429 specifically offers a single low-battery output with fixed, factory-trimmed thresholds.
FAQ
What are the available factory-trimmed threshold options for the MAX6429?
The MAX6429 is available with factory-trimmed low thresholds ranging from 1.6V to 2.1V or 2.6V to 3.1V in 100mV increments, and high thresholds from 2.3V to 2.6V or 3.3V to 3.6V in 100mV increments.
How does the MAX6429 handle voltage recovery after a low-battery event?
When the supply voltage rises above the specified high threshold, the low-battery output deasserts following a minimum 140ms timeout period to ensure supply stability.
