TPS63802: Input current while disabled with high capacitive load

Yaron Kaufmann24

Part Number: TPS63802
Other Parts Discussed in Thread: TPS63900, TPS61094

We would like to use the TPS63802 as a charger for a super cap.
In the datasheet the input current while disabled is mentioned for Vo = 0

What would be the input current for Vo = 4V , Vin = 3V and EN = 0V ?

over 4 years ago

0 Jasper Li over 4 years ago

TI__Mastermind 46905 points

Hi Yaron,

I don't think it is a good idea. The input current will go to the current limit of the device. I would suggest TPS63900, or a device such as TPS61094

0 Yaron Kaufmann24 over 4 years ago in reply to Jasper Li

Intellectual 570 points

Just to make sure , I am keeping the device disabled ( EN = GND), input voltage is 3V and output voltage (held by a large capacitor) is 4V
Should I expect an input current ?
Thanks

0 Jasper Li over 4 years ago in reply to Yaron Kaufmann24

TI__Mastermind 46905 points

Hi Yaron,

the current should be very small at such condition

Power management

Power management forum

TPS63802: Input current while disabled with high capacitive load