MITSUMI
3 cell Lithium-ion/Lithium-polymer battery protection IC MM3783 Series
3 cell Lithium-ion/Lithium-polymer battery protection IC
MM3783 Series
Outline
MM3783 series are an overcharge, overdischarge, overcurrent and temperature protection IC for a Lithium-
ion/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.
(Unless otherwise specified, Topr=+25°C)
Features
(1) Range and accuracy of detection/release voltage
Overcharge detection voltage
3.6V to 4.5V, 5mV steps
3.4V to 4.5V, 5ꢀmV steps
±.ꢀV to 3.ꢀV, 5ꢀmV steps
±.ꢀV to 3.5V, 5ꢀmV steps
3ꢀmV to 3ꢀꢀmV, 5mV steps
Accuracy±±5mV (Topr=±ꢀ to ꢁ5ꢀ0C)
Accuracy±5ꢀmV
Overcharge release voltage (Note1)
Overdischarge detection voltage
Overdischarge release voltage (Note±)
Discharge overcurrent detection voltage 1
Discharge overcurrent detection voltage ±
Short detection voltage
Accuracy±8ꢀmV
Accuracy±1ꢀꢀmV
Accuracy±15mV (Typ. 5ꢀmV~)
Twice or 4 times of discharging overcurrent 1 Accuracy±15ꢂ
4 or 8 times of discharging overcurrent 1
–3ꢀꢀmV to –±ꢀmV, 5mV steps
–±50C to 750C, 50C step 3
Accuracy±1ꢀꢀmV
Accuracy±1ꢀmV
Accuracy±30C
Charging overcurrent detect voltage
Temperature protection detection voltage (Note3)
(±) Each detection delay time set by the external capacitor
Overcharge detection delay time
Setting by capacitor of COV
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy Min.1ꢀꢀµs / Max.4ꢀꢀµs
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Accuracy±5ꢀꢂ
Overcharge release delay time
1/1ꢀ to 1ꢀtimes of tVDET1
Setting by capacitor of CUV
1/1ꢀ to 1ꢀtimes of tVDET±
Setting by capacitor of CDOC
1/1ꢀ to 1ꢀtimes of tVDET3-1
Typ. ±ꢀꢀµs fixed
Overdischarge detection delay time
Overdischarge release delay time
Discharging overcurrent detection delay time1
Discharging overcurrent detection delay time±
Short detection delay time
Discharging overcurrent release delay time
Charging overcurrent detection delay time
Charging overcurrent release delay time
Temperature protection detection delay time
Temperature protection release delay time
1/1ꢀ to 1ꢀtimes of tVDET3-1
Setting by capacitor of CCOC
1/1ꢀ to 1ꢀtimes of tVDET4
Setting by capacitor of CTH
1/1ꢀ to 1ꢀtimes of tVDET5
Note1 : Overcharge release function is selectable from 3 options (voltage decrease, charger remove, load connect).
Note± : Overdischarge release function is selectable from 3 options(voltage increase , charger remove, load connect).
Note3 : Temperature protection detection temperature accuracy is guaranteed by design.
Detection accuracy may change with the specification of the used NTC thermistor.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.