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TPS563209: high power consumption at no load

Part Number: TPS563209
Other Parts Discussed in Thread: TPS563201, TPS563200

Dear expert,

My customer is using TPS563209DDCR, 8.7Vin and 5Vout. However they found at no load(still 5Vout), the power consumption is too high for them, 8.7V*13.4mA. 

I checked TPS563209, it seems that it didn't support high efficiency at light load. Do we have pin to pin device that support high efficiency at no load? Thanks.