MP2617 – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL

MP2617 Rev. 1.03

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8/23/2013

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regulated at constant 3.6V.

When the input source is overloaded, either the

current exceeds the input current limit or the

voltage falls below the input voltage limit, the

MP2617 then reduces the charge current until

the input current falls below the input current limit

and the input voltage rises above the input

voltage limit. If the system current increases

beyond the power allowed by the input source,

additional power will be drawned from the battery

via an on-chip 40mΩ MOSFET working as an

ideal diode.

Additionally, if the input source is removed, the

MP2617 will turn on the 40mΩ MOSFET allowing

the battery to power the system load to keep the

operation of the portable device.

Operation Flow Chart

Figure 5 shows the operation flow chart of the

MP2617.

Figure 6 shows the operation process.