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Part Number: TPS62230
On the datasheet is written that the TPS62237 is able to keep the Ton at 100% in order to have Vout = Vin when Vin is close to the desired regulated output. This can help to use more capacity of a single cell Lithium battery.
On my board the current consumption is 87.3mAdc, when Vin = 3.737Vdc, and Vout = 3.329Vdc.
With the theoretical calculation, the Vout should stay at 3.329Vdc even if Vin is as low as 3.411Vdc :
Vin min = Vout max + Iout max * (RDSon max + RL) = 3,329 + 0,0873 * (0,850 + 0,095) = 3,411Vdc
But the measure is different from the theory :
Vout starts to decrease when Vin is around 3.6Vdc. Is there something wrong ?
I thank you in advance.
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In reply to Chris Glaser:
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