TPS65631: Quiescent current

Hello radar,

The quiescent current of this device with its external components is relatively high because the boost converter is permanently switching.
The values that I measured on a typical unit with the DFE252012 4.7uF inductors from Toko/Murata are between 8.9mA at 2.9V input and 5.9mA at 4.5V input. This current is not just quiescent current of the device, but quiescent current of the whole power supply.

Best regards,
Brigitte

Umm... well now I'm in an uncomfortable position.  I had asked someone else this same question; and they directed me to Page 6 of the device datasheet, line item 1 suggesting 100nA was the answer I sought- the fact that it didn't have the qord quiescent in it was how I had missed that.  The CTRL pin is defined as the 'enable' function; and from the block diagram I do see a series FET on each leg so it seems we 'could' shut the outputs off.  Your post seemed to suggest that we couldn't though; hence my confusion.  

The intended use case for the device would be a portable/wearable; so... is it really 6-8mA all the time as you say; or if I pull CTRL low will it shut down and be nice?

Hello radar,

The shutdown current of the device is 0.1uA (CTRL low) and as soon as the device is enabled it will draw 6 to 8 mA because the converters are permanently running. Other customers are often using charge pumps inside the timing controller during the time when the panel draws low current.

Best regards,
Brigitte