designed for charging all types Li-Ion Batteries very safely and without
It is generally advised that a Li-ion battery should be charged with utmost care and caution as these type of batteries are prone to instant damages or explosions if the specified charging measures are not employed.
wonderful chip, the LM3622 which is an excellent Li-Ion charger, controller
The IC has been designed for generating a constant current at constant
voltage, a basic prerequisite for all Li-Ion batteries. The IC may be configured
for charging a single Li-Ion cell or a pack of many.
right from 5 to 24V depending upon the charging needs and the connected battery.
The IC does not require any precision external resistors for implementing the
functions. Moreover, the IC has a negligible drain of less than 200nA of
current from the battery in the absence of an input voltage.
charging current through the principle of temperature compensated band-gap
reference. The current is regulated, however its done via an external current
performance of the circuit and also of the input supply voltage.
battery charger design which is capable of charging a single 3.7V Li-Ion Cell.
may be appropriately selected.
voltage of the cell and “enable status” of the low voltage detection.
condition as soon as the connected battery hits target regulation level, determined
by the internal setting of the IC.
battery, initiating a constant voltage charging mode of the circuit.
regulated voltage across its terminals, while the charging current is monitored
depending upon the level of charge over the battery.
the battery is significantly reduced to a safe value.