Protection IC for 3-5 Cell Batteries with Secondary Protection Function Protection IC for Lithium Ion/Lithium Polymer 3-5 Cell Secondary Battery MM3684 series
2015.09.18
Overview
The <MM3684 series> features built-in secondary protection function compliant with international standards for electronic tools, which contributes to improved safety during use.
The <MM3684 series> features the additional functions of temperature protection and multi-stage overcurrent protection. These help to achieve a low consumption current and better space efficiency that could not be achieved with existing circuit layouts, and also helps to improve safety of lithium ion batteries.
Features
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1.Built-in overcharge, over-discharge and overcurrent protection functions.
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2.3-stage discharge overcurrent protection
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3.Detection of 2 values of high and low temperatures with an external NTC to protect battery packs
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4.Built-in secondary protection function to drive external FET for FUSE
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5.Intermittent operation with temperature protection for a low consumption current
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6.Over-discharge detection voltage switch function (2 values can be set)
Main specifications
| Overcharge detection voltage | 1 : 3.6 to 4.5V (5mV steps) accuracy ±25mV |
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| 2 : 3.6 to 4.5V (5mV steps) accuracy ±25mV | |
| Over-discharge detection voltage | 1 : 2.0 to 3.0V (50mV steps) accuracy ±80mV |
| 2 : 2.0 to 3.0V (50mV steps) accuracy ±80mV | |
| Discharge overcurrent detection voltage | 1 : 30 to 300mV (5mV steps) accuracy ±15% |
| 2 : 2x/4x discharge overcurrent 1 accuracy ±20% | |
| Short circuit detection voltage | 4x/8x discharge overcurrent 1 accuracy ±100mV |
| Charge overcurrent detection voltage | -300 to -20mV (5mV steps) accuracy ±10mV |
| Temperature protection detection temperature | -30℃ to 80℃ (5℃ steps, 2 values can be set) |
| REG terminal output voltage | 1.5 to 3.0V (50mV steps) accuracy ±25mV |
| Package | VSOP-24A |
| Dimensions | 7.9×7.6×1.25 (W×D×H) (Unit : mm) |
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