To provide a linear motor that can easily control the driving of a coil body and reduce noise by a simple constitution, a lens drive unit and a digital camera.

The linear motor 7 comprises a yoke 17, a magnet 19 and the coil body 23, and a drive control part 31. Further, the coil body 23 is linearly driven relatively to the yoke 17 by an electromagnetic force generated by energizing a coil that constitutes the coil body 23. A drive control part 31 feeds a pulse current to the coil body 23, and a frequency of the fed pulse current is made to be a frequency out of an audible band.