With Temperature Protection Circuit Protection IC for Lithium Ion/Lithium Polymer 3 Cell Secondary Battery MM3783
2014.09.19
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
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1.Overcharge, overdischarge and overcurrent protection functions built-in.
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2.Monitor and protect against discharge overcurrent with 3 steps (overcurrent 1, overcurrent 2, short circuit protection)
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3.Detection of high and low temperatures with 3 values with an external NTC thermistor to protect the battery pack.
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4.Charging prohibited/permitted can be selected for 0V battery (optional)
| Overcharge detection | 3.6 to 4.5V (5mV steps) accuracy ±25mV |
|---|---|
| Overcurrent detection | 2.0 to 3.0V (50mV steps) accuracy ±80mV |
| Discharge overcurrent detection voltage 1 | 30 to 300mV (5mV steps) accuracy ±15%/±10mV |
| Discharge overcurrent detection voltage 2 | 2x/4x discharge overcurrent 1 accuracy ±20% |
| Short circuit detection voltage | 4x/8x discharge overcurrent 1 accuracy ±30% |
| Discharge overcurrent detection voltage | -300 to -20mV (5mV steps) accuracy ±15%/±10mV |
| Temperature protection detection temperature | -30℃ to 80℃ (5℃ steps, 3 values can be set) accuracy ±3℃ |
| REG terminal output voltage | 1.5 to 3.0V (50mV steps) accuracy ±25mV |
| Package | TSOP-16B |
| Dimensions | 5.0×4.4×1.1mm (W×D×H) |
(Note1) The VOUT launch conditions can be set when the voltage returns
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