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Design Power Bank -Need help to select IC

Hi
I need to design Li-polymer battery power bank that charge from solar input and output 5V/1A.
I selected this chip and attached image is what they have given as schematic.
I have few questions.

1). is my selection is good?
http://www.ti.com/product/BQ24195/datasheet

Next questions are regarding attached image (schematic )
app_diag_lusb97.gif


Q2) . what is host? what is phone tablet ? is that where we connect phone?
Q3). What is power pad means?
 
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