MM3783 Series

MM3783 series are an overcharge, overdischarge, overcurrent and temperature protection IC for a Lithiumion/Lithiumpolymer rechargeable battery. Lithium-ion/Lithium-polymer battery overcharge each cell, over discharge, and discharge and charging overcurrent, short circuits can be detected. The detection of the temperature is enabled by connecting resistance between thermistor, TH terminal -VSS terminals between REG terminal -TH terminals. Each of these IC composed of six voltage detectors, short detection circuit, reference voltage sources, delay time generation circuit , logical circuits and regulator circuit etc.

For 3-cells

1. Range and accuracy of detection/release voltage
●Overcharge detection voltage 3.6V to 4.5V, 5mV steps Accuracy±25mV
●Overcharge release voltage 3.4V to 4.5V, 50mV steps Accuracy±50mV
●Overdischarge detection voltage 2.0V to 3.0V, 50mV steps Accuracy±80mV
●Overdischarge release voltage 2.0V to 3.5V, 50mV steps Accuracy±100mV
●Discharge overcurrent detection voltage 1 30mV to 300mV, 5mV steps 1 Accuracy±15%
●Discharge overcurrent detection voltage 2 Twice or 4 times of discharging 1 Accuracy±20%
●Short detection voltage 4 or 8 times of discharging 1 Accuracy±30%
●Charging overcurrent detect voltage –300mV to –20mV, 5mV steps 1 Accuracy±15%
●Temperature protection detection temperature –25℃ to 75℃, 5℃ step Accuracy±3℃

2. Range and accuracy of delay time
●Overcharge detection delay time Setting by capacitor of COV Accuracy±50%
●Overdischarge detection delay time Setting by capacitor of CUV Accuracy±50%
●Discharging overcurrent detection delay time 1 Setting by capacitor of CDOC Accuracy±50%
●Discharging overcurrent detection delay time 2 1/10 to 10times of tVDET3-1 Accuracy±50%
●Short detection delay time Typ. 200µs fixed Accuracy Min.100µs/max.400µs
●Charging overcurrent detection delay time Setting by capacitor of CCOC Accuracy±50%
●Temperature protection detection delay time Setting by capacitor of CTH Accuracy±50%

(3) Range and accuracy of regulator output voltage
●VOUT pin output voltage 1.5V to 3.0V, 50mV steps Accuracy±25mV

(4) Low current consumption
●Consumption current1 (VDD), Vcell=4.3V Typ. 20.0μA, Max. 30.0μA
●Consumption current2 (VDD), Vcell=3.5V Typ. 18.0μA, Max. 23.0μA
●Consumption current3 (VDD), Vcell=2.0V Typ. 1.5μA, Max. 3.0μA

• TSOP-16B