MB3836 Datasheet, PDF (11/28 Pages) Fujitsu Component Limited. – Li-Ion Battery Protection IC

MB3836
completely turn off the bias source of this IC, so that the battery pack enters the power-down state. To return
from that state, perform recharging operation, or set the OCV terminal (pin 1) to “H” level.
(5) Remote ON Circuit Block
When the battery pack is detached from the notebook PC, the OUTON terminal (pin 20) pulled up to the VS
terminal (pin 5) on the notebook PC side goes “L” level to turn off the bias of the over-current detection block.
At the same time, the COUT terminal (pin 2) and DOUT terminal (pin 3) go “H” level to turn off the Pch MOS
FET for external charge/discharge control.
Even when the OUTON terminal (pin 20) is “L” level with charging/discharging off, the IC is operating and the
over-discharge detection function is working to protect the battery. If the VS terminal (pin 5) is “H” level, connecting
the battery pack to the main unit makes it readily available.
(6) Cell Voltage Monitor Block
The cell to be monitored can be selected depending on the voltage levels at the MSW1 terminal (pin 16) and
MSW2 terminal (pin 17). When the monitor function is operating, the cell voltage input block switch does not
work even when an over-charge is detected.
Voltage level at
MSW1 terminal
L
L
H
H
Condition of monitoring cell voltage
Voltage level at
MSW2 terminal
L
H
L
H
VMON output

H cell voltage
M cell voltage
L cell voltage
SW at cell voltage input block
Depend on over-charge detection block
Off
Off
Off
11