TD62064APG/AFG

2007-10-16

10

Points to Remember on Handling of ICs

(1)

Heat Radiation Design

In using an IC with large current flow such as power amp, regulator or driver, please design the device

and condition. These ICs generate heat even during normal use. An inadequate IC heat radiation

design can lead to decrease in IC life, deterioration of IC characteristics or IC breakdown. In addition,

please design the device taking into considerate the effect of IC heat radiation with peripheral

components.

(2)

Back-EMF

When a motor rotates in the reverse direction, stops or slows down abruptly, a current flow back to the

motor’s power supply due to the effect of back-EMF. If the current sink capability of the power supply

is small, the device’s motor power supply and output pins might be exposed to conditions beyond

maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system

design.