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Part Number: TPS61220
The device can output setting value at no loading, but when adding load, such as 5mA or 10mA, the output voltage drops down and can't maintain.
Best RegardsJasper LiBoost Converter Solution
The issue is probably caused by no good layout. maybe the routing between the output capacitor and the IC pins is too long, which introduces lots of noise into the control circuit of the IC. please following the application note to reveiw the layout. if find something not good, just expriment in current PCB to confirm the issue.
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