Overview
With batteries used for electronic tools requiring greater capacity in recent years, secondary lithium ion batteries are being used more often.
There are currently 3 to 5 cells within a battery, and the 3-cell battery specifications (10.8V) that make up the majority of the market have a greater need for temperature protection and multi-step overcurrent protection.
Using the <MM3783> enables a lower cost and higher level of safety than could be achieved using existing circuits.
Features
- Overcharge, overdischarge and overcurrent protection functions built-in.
- Monitor and protect against discharge overcurrent with 3 steps (overcurrent 1, overcurrent 2, short circuit protection)
- Detection of high and low temperatures with 3 values with an external NTC thermistor to protect the battery pack.
- Charging prohibited/permitted can be selected for 0V battery (optional)
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Overcharge detection |
3.6 to 4.5V (5mV steps) accuracy ±25mV |
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Overcurrent detection |
2.0 to 3.0V (50mV steps) accuracy ±80mV |
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Discharge overcurrent detection voltage 1 |
30 to 300mV (5mV steps) accuracy ±15%/±10mV |
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Discharge overcurrent detection voltage 2 |
2x/4x discharge overcurrent 1 accuracy ±20% |
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Short circuit detection voltage |
4x/8x discharge overcurrent 1 accuracy ±30% |
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Discharge overcurrent detection voltage |
-300 to -20mV (5mV steps) accuracy ±15%/±10mV |
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Temperature protection detection temperature |
-30℃ to 80℃ (5℃ steps, 3 values can be set) accuracy ±3℃ |
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REG terminal output voltage |
1.5 to 3.0V (50mV steps) accuracy ±25mV |
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Package |
TSOP-16B |
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Dimensions |
5.0×4.4×1.1mm (W×D×H) |
(Note1) The VOUT launch conditions can be set when the voltage returns