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TPS63051: How much load current when switching between PFM mode and PWM mode?

Part Number: TPS63051

According to the datasheet(9.4.2 Power Save Mode Operation),
It is stated that the TPS63051 will operate in PWM mode above about 350mA.

However, the text in 9.4.2 states that TPS63051 switches to PWM mode when the load current exceeds 150mA.

--------------Excerpt from datasheet ----------------------

Depending on the load current, the device works in PWM mode at load currents of approximately 350 mA or higher to provide the best efficiency over the complete load range

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At the next clock cycle, if the load is still lower than 150 mA, the device switches off again and the same operation is repeated. If at the next clock cycle the load is above 150 mA, the device automatically switches to PWM mode.

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Is the load current threshold that the TPS63051 drives in PWM mode 350mA or 150mA?

Best regard, Taku MITANI