BA6467FP-Y Datasheet, PDF (8/9 Pages) Rohm – 3-phase motor driver for VCR cylinders

Motor driver ICs
FOperation notes
(1) Start / stop pin
The I / O equivalent circuit of the start / stop pin is shown
in Fig.4. The pin has a temperature dependence of
*7mV / _C, and its resistance can vary ±30%. The volt-
age on this pin should be less than VREG.
BA6467FP-Y
(3) Torque limit pin
The output current can be limited by applying a voltage
to the torque limit pin. Control is provided so that this pin
will have the same potential as the power ground pin
(RNF).
Note that there is a voltage offset on this pin. The RNF-
pin voltage is 0.325V when the TL-pin voltage is 0.4V
(typical) and the RNF-pin resistance is 0.5Ω. Note that
the voltage offset changes with RNF-pin resistance.
Connect the TL pin to VREG (pin 23) when the TL pin is not
used.
(2) Hall input
The input circuit of the Hall input pins is shown in Fig.5.
The Hall devices can be connected in either series or par-
allel. The input Hall signal should be within the range of
the Hall input common-mode voltage.
(4) Thermal shutdown circuit (TSD)
The thermal shutdown circuit puts the coil outputs (A1,
A2, and A3) to the open state at the temperature of
175_C (typical). There is an approximate 25_C tempera-
ture hysteresis.
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