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BA6811F View Datasheet(PDF) - ROHM Semiconductor

Part Name
Description
View to exact match
BA6811F
ROHM
ROHM Semiconductor ROHM
BA6811F Datasheet PDF : 6 Pages
1 2 3 4 5 6
Motor driver ICs
FCircuit operation
The BA6811F and BA6813F 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 :
TON (Charge time)= C S (VLDCL*VLDCP)
ILDC
TOFF (Discharge time)=
C S (VLDCL*VLDCP)
ILDD
BA6811F / BA6813F
(Typical value)
where
VLDCL is the LD-pin clamp voltage
(1.93V),
VLDCP is the LD-pin comparator voltage
(0.76V),
ILDC is the LD-pin charge current
(2.9µA),
ILDD is the LD-pin discharge current
(0.52µA),
C is the capacitance of the LD-pin external capacitor.
For C=1µF, for example, the charge (output ON) and dis-
charge (output OFF) times are 0.40s and 2.25s, respec-
tively.
The timing chart for an occasion of motor locking is
shown in Fig. 1.
715
 

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