美上美3474芯片手册 BMS芯片手册
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2022-10-12
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• 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 to 5cells lithium-ion/lithium-polymer battery protection IC
3 to 5cells lithium-ion/lithium-polymer battery protection IC
Monolithic IC MM3474 Series
Outline
MM3474 series is an overcharge, overdischarge and overcurrent protection IC for a lithium-ion / lithium-
polymer rechargeable secondary battery. Lithium-ion / lithium-polymer rechargeable secondary battery
overcharge each cell, over discharge, and discharge overcurrent, short circuits can be detected.
This supports 3 to 5 serial cells connected in series, and switches over to the desired no. of cells by sending
High / Low signal to SEL terminal.
This also provides the control terminals of output over discharge detection (SDC) and output over charge
detection (SOC), which allows configuring an application with fewer external parts for 6 or more cells
connected in series.
Features
(Unless otherwise specifi ed, 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 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 3.4V, 50mV steps Accuracy±100mV
Overcurrent detect voltage 50mV to 300mV, 5mV steps Accuracy±15mV
Short detection voltage 0.2V to 1.0V, 50mV steps Accuracy±100mV
(2) Each detection delay time set by the external capacitor
(3) The setting for three cell , for four cell , and for fi ve cell protection can be set with the SEL1 pin
and the SEL2 pin.
(4) The charge and discharge of the battery can be controlled with SDC pin and SOC pin.
(5) Low current consumption
Consumption current1 (Vdd) , Vcell=4.4V Typ. 10.0µA, Max. 20.0µA
Consumption current2 (Vdd) , Vcell=3.5V Typ. 5.0µA, Max. 10.0µA
Consumption current3 (Vdd) , Vcell=1.8V Typ. 1.5µA, Max. 3.0µA
Consumption current1 (V5) , Vcell=4.4V Typ. 4.0µA, Max. 8.0µA
Consumption current2 (V5) , Vcell=3.5V Typ. 3.0µA, Max. 6.0µA
Consumption current3 (V5) , Vcell=1.8V Typ. 1.5µA, Max. 3.0µA
(6) Absolute maximum ratings
VDD pin VSS2−0.3V to +30V
V5 pin V4−0.3V to VDD+0.3V
Between the input terminals of voltage of battery −0.3V to +10V
V− pin, CS pin VDD−30V to VDD+0.3V
OV pin, DCHG pin VSS2−0.3V to VDD+0.3V
SEL pin VSS2−0.3V to VDD+0.3V
SDC pin, SOC pin VSS2−0.3V to VDD+0.3V
Storage temperature −55ºC to +125ºC
Operation temperature −40ºC to +85ºC
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