529
Motor driver ICs BA6840BFS / BA6840BFP-Y / BA6840BFP / BA6842BFS
FOperation notes
(1) Start / stop
The I / O equivalent circuit of the start / stop pin is shown
in Fig. 7. The pin has a temperature dependence of
*7mV / _C, and the resistance can vary ±30%. Take the
temperature effect into consideration when designing
your application.
(2) Hall input
The Hall input equivalent circuit is shown in Fig. 12. The
Hall devices can be connected in either series or parallel.
(3) Thermal shutdown circuit (TSD)
The circuit puts the coil outputs (A
1, A2, and A3) to the
open state at the temperature of 175_C (typical). There
is a temperature difference of about 15_C between the
temperatures at which the circuit is activated and deacti-
vated.
(4) Torque control input
(6) Hall input (H1
)
, H1
*
, H2
)
, H2
*
, H3
)
, H3
*
)
(5) Coil output
