TPS61220: which pin is pin 1? I have the CKS marked part in the SC-70 foot print... there is not a pin 1 inidcator

Kevin kay

Prodigy 170 points

Part Number: TPS61220

hi, which pin is pin 1? the drawing doesn't indicate pin 1 clearly.

obviously I know which pin is what, but I do not know physically how the package should orient as its symmetric.

thanks!

over 7 years ago

0 Jasper Li over 7 years ago

TI__Mastermind 46905 points

There should be a dot to indicate the pin 1. you can refer information of this link. although not the same package, the method is the same.
www.raviyp.com/.../150-identifying-pin-no-1-on-an-ic

0 Kevin kay over 7 years ago in reply to Jasper Li

Prodigy 170 points

thanks! that was pretty good document for future use.

unfortunately the device doesn't have a bevel... but it does have letters on it. anyway i ended up looking at the datasheet for the evaluation module here

and that helped cuz i looked at the photo here

www.ti.com/.../tps61220evm_319_800.jpg

and then the schematic in the Eval user guide.

thanks!

can you request TI update this datasheet? or is it standard fair to assume bottom left is the pin 1 without any markings?

Power management

Power management forum

TPS61220: which pin is pin 1? I have the CKS marked part in the SC-70 foot print... there is not a pin 1 inidcator