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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 MAX6428EHUR+T is a low-power, precision voltage supervisor IC from Maxim Integrated, now part of Analog Devices. It features a fixed 2.93V reset threshold and operates within a power supply range of 1V to 5.5V. Designed for battery monitoring applications, it supports alkaline, lithium-ion, NiCd, and NiMH chemistries. The device utilizes a SOT-23-3 package (TO-236-3) and functions reliably across an operating temperature range of -40°C to +85°C.
Feature Summary
- Provides single-level low-battery output indication with internal hysteresis
- Includes a minimum 140ms timeout period to ensure supply voltage stabilization before enabling system activity
- Supports monitoring of single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies
Applications
- Monitoring single lithium-ion (Li+) cells
- Monitoring multicell alkaline power supplies
- Monitoring multicell NiCd power supplies
- Monitoring multicell NiMH power supplies
Procurement Notes
Verify the specific suffix 'EHUR' against the official datasheet to confirm the exact threshold voltage and package variant. Ensure the component is lead-free and RoHS compliant as indicated by the '+' designation. Cross-reference the manufacturer documentation to confirm current availability status and any potential obsolescence notices associated with this specific part number.
Selection Notes
Select this component when a fixed 2.93V threshold is required for low-battery detection in portable devices. It is suitable for systems needing a simple, low-power solution to indicate weak battery conditions without complex programming. Consider the SOT-23-3 footprint constraints and the specified operating temperature range during PCB layout and thermal design.
Part Context
This device belongs to the MAX6427–MAX6438 family of low-power, single/dual-level battery monitors with hysteresis. These devices are designed to indicate three battery conditions: good, weak, or empty. The MAX6428 specifically offers a single low-battery output indicator, making it ideal for simpler systems compared to dual-output variants in the same series.
Replacement Considerations
Other members of the MAX6427–MAX6438 family may serve as substitutes if different threshold voltages or dual-output capabilities are acceptable. Verify that alternative parts match the required threshold voltage and package type.
