709

Motor driver ICs

BA6809F / BA6819AF

FCircuit operation

The BA6809F and BA6819AF have motor lock detection

and automatic restart circuits. The timing of lock detec-

tion and automatic restart is determined by the external

capacitor connected to the LD pin. The charge time of the

external capacitor is given by :

(Typical value)

where

(1.90V),

(0.73V),

(2.2

µA),

(0.42

µA),

C is the capacitance of the LD-pin external capacitor.

For C=0.47

µF, for example, the charge and discharge

times are 0.25s (output ON) and 1.31s (output OFF), re-

spectively.

FApplication example

C

C