This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LMR38020: PWM &PFM

Part Number: LMR38020

Hi team,

My customer is using our LMR38020FSDDAR.

Is this device work in auto mode? When load is heavy is PWM, and when load is light, it automatically change to PFM?



  • Hi Brian,

    Pls see the below table. LMR38020FSDDAR is always working in FPWM mode. if you want the device enters PFM mode at light load to achieve high efficiency, maybe you need to choose PFM version (LMR38020SDDAR). Thanks.