MP2606 – SINGLE CELL 1A LINEAR LI-ION BATTERY CHARGER W/O TRICKLE CHARGE

MP2606 Rev. 1.0

www.MonolithicPower.com

8

1/25/2010

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The MP2606 has an integrated charge status

pin that remains low while the battery is

charging. Once the charge current has reduced

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.