761

Motor driver ICs

BA6467FP-Y

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-

(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.

(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 0.5

Ω. Note that

the voltage offset changes with RNF-pin resistance.

used.

(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.