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With Temperature Protection Circuit
Protection IC for Lithium Ion/Lithium Polymer
3 Cell Secondary Battery
MM3783
Announced on September 19, 2014
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
1.
Overcharge, overdischarge and overcurrent protection functions built-in.
2.
Monitor and protect against discharge overcurrent with 3 steps (overcurrent 1, overcurrent 2, short circuit protection)
3.
Detection of high and low temperatures with 3 values with an external NTC thermistor to protect the battery pack.
4.
Charging prohibited/permitted can be selected for 0V battery (optional)

§ Main specifications
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)