LM25149-Q1EVM-2100: 3.3V output

Mona Guo

Prodigy 610 points

Part Number: LM25149-Q1EVM-2100

Hi, team

When set output to 3.3V, Do I need to both connect FB to VDDA and VCCX to GND? Is VCCX to GND must have?

over 2 years ago

0 Elena Gao over 2 years ago

TI__Genius 13735 points

hi,

For 3.3 V is feasible simply by connecting FB to VDDA ,VCCX is optional input for an external bias supply , in use of fix 3.3V output, tie VCCX to GND is must to have..

please refer to datasheet section 9.2, and pin function table.

Elena

Power management

Power management forum

LM25149-Q1EVM-2100: 3.3V output