hello:
There are two pieces of LTM4650A-1 on my circuit, input 12V, output 0.85V. The two circuits are the same, and one is not working properly.
Sometimes the power is suddenly lost, and sometimes it cannot be started.
When unable to start or power down, the various states are as follows
Vout：0.99V or 1.5V
Good:0V
INTVCC:5V
RUN:3.8V
VFB：0V
Hello,
It is possible that VFB is causing the problem. INTVCC=5V means that the module and its internal control circuitry are powered on. When working properly, VFB should always be regulated to 0.6V.…
Thank you very much for helping me solve the problem. It may be that the FP pin contact is not good, and the voltage output is normal after I re-soldering.
