• 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.

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.

Features

(Unless otherwise specified, Topr=+25°C)

(1) Range and accuracy of detection/release voltage

Overcharge detection voltage

3.6V to 4.5V, 5mV steps

Accuracy±25mV (Topr=±0 to +50°C)

Overcharge release voltage (Note1)

3.4V to 4.5V, 50mV steps

Accuracy±50mV

Overdischarge detection voltage

2.0V to 3.0V, 50mV steps

Accuracy±80mV

Overdischarge release voltage (Note2)

2.0V to 3.5V, 50mV steps

Accuracy±100mV

Discharge overcurrent detection voltage 1

30mV to 300mV, 5mV steps

Accuracy±15mV (Typ. 50mV~)

Discharge overcurrent detection voltage 2

Twice or 4 times of discharging overcurrent 1

Accuracy±15%

Short detection voltage

4 or 8 times of discharging overcurrent 1

Accuracy±100mV

Charging overcurrent detect voltage

–300mV to –20mV, 5mV steps

Accuracy±10mV

Temperature protection detection voltage (Note3)

–25°C to 75°C, 5°C step 3

Accuracy±3°C

(2) Each detection delay time set by the external capacitor

Overcharge detection delay time

Setting by capacitor of COV

Accuracy±50%

Overcharge release delay time

1/10 to 10times of tVDET1

Accuracy±50%

Overdischarge detection delay time

Setting by capacitor of CUV

Accuracy±50%

Overdischarge release delay time

1/10 to 10times of tVDET2

Accuracy±50%

Discharging overcurrent detection delay time1

Setting by capacitor of CDOC

Accuracy±50%

Discharging overcurrent detection delay time2

1/10 to 10times of tVDET3-1

Accuracy±50%

Short detection delay time

Typ. 200µs fixed

Accuracy Min.100µs / Max.400µs

Discharging overcurrent release delay time

1/10 to 10times of tVDET3-1

Accuracy±50%

Charging overcurrent detection delay time

Setting by capacitor of CCOC

Accuracy±50%

Charging overcurrent release delay time

1/10 to 10times of tVDET4

Accuracy±50%

Temperature protection detection delay time

Setting by capacitor of CTH

Accuracy±50%

Temperature protection release delay time

1/10 to 10times of tVDET5

Accuracy±50%

Note1 : Overcharge release function is selectable from 3 options (voltage decrease, charger remove, load connect).

Note2 : 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.