MP2606 – SINGLE CELL 1A LINEAR LI-ION BATTERY CHARGER W/O TRICKLE CHARGE
Charge Status Indicator (CHG)
The MP2606 has an integrated charge status
pin that remains low while the battery is
charging. Once the charge current has reduced
to the battery full charge current threshold (IBFL),
the CHG pin will become high impedance.
Thermal Protection
The MP2606 has proprietary thermal protection
to prevent the IC from overheating. When in
thermal protection mode, the charge current
becomes a saw-tooth waveform instead of a
DC current. The average current of the saw-
tooth waveform will be lower than the
programmed DC charge current to prevent the
IC from overheating. The frequency and
amplitude of the saw-tooth current waveform
can be altered by changing the capacitance
value connected to the SS pin. Operating in
thermal protection mode will slow down the
charging process. Lowering the input voltage
and enhancing thermal dissipation to the
environment can effectively prevent the IC from
going into thermal protection mode.
MP2606 Rev. 1.0
1/25/2010
www.MonolithicPower.com
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