LM3643: Can LM3643 support I2C trigger for torch mode?

user5173390

Part Number: LM3643

hi, This is Martin from Intel Shanghai, we use LM3643 in Intel reference design to drive camera flash led. from datasheet, it support GPIO HW trigger in torch mode, if no GPIO is available for torch, can LM3643 support I2C trigger to on/off torch?

over 6 years ago

0 Angelos Tsiros over 6 years ago

TI__Intellectual 2140 points

Hi Martin,

Yes, you can turn torch on/off using the enable register only, via I2C. Disable TEMP/TORCH pun by setting bit4 to '0' (which is the default setting), then set mode bits to '10' to turn on Torch and '00' to turn it off.

Regards,
Angelos

Power management

Power management forum

LM3643: Can LM3643 support I2C trigger for torch mode?