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TPS61222: TPS61222

Part Number: TPS61222

Hİ team,

I'm trying to generate a 5Volts power supply from 1.2Volts Ni-MH battery by using the Booster TPS61222, 

But without load, I have Vout=5Volts  when the circuit is loaded (10mA and more) the Vout voltage drops (from 5Volts to less than 4Volts).

I used the circuit as indicated in the datasheet:

This is my PCB layout at below. I checked any connection.


Please could you help me with this issue, I am looking forward to your advice.

Thank you