Battery Management<br>(Battery Management R5421N Series) - B2B貿易平臺

Battery Management
(Battery Management R5421N Series)

The R5421NxxxC/F series are protection ICs for over-
charge/discharge of rechargeable one-cell Lithium-ion (Li+) excess
load current, further include a short circuit protector for preventing
large external short circuit current.
Each of these ICs is composed of three voltage detectors, a
reference unit, a delay circuit, a short circuit protector, and a logic
circuit. When charging voltage crosses the detector threshold from a
low value to a value higher than VDET1 , the output of COUT pin, the
output of over-charge detector/VD1, switches to low level, charger's
negative pin level. After detecting over-charge the VD1 can be reset
and the output of COUT becomes high when the VDD voltage is
coming down to a level lower than “VREL1 ”, or when a kind of
loading is connected to VDD after a charger is disconnected from the
battery pack while the VDD level is in between “VDET1 ” and
“VREL1 ” in the R5421NxxxC/F version.