506

Motor driver ICs

BA6259N

FControl pin equivalent circuit

FOparation notes

(1)

Because a single transistor is used for the low-side out-

put stage, the LOW level output voltage is further low-

ered. This results in a wide range of motor drive voltage.

(2)

Though the IC input pins can be directly connected

with MOS output pins, it is recommendable to connect re-

sistors of a few kiloohms to do3en of kiloohms between

the pins for the sake of pin protection.

(3)

that is not being driven could be momentarily driven dur-

ing mode switching. Check for this problem when design-

ing your application.

(4)

It is recommendable to arrange your design so that

off the power.

(5)

Thermal shutdown circuit

When the thermal shutdown circuit is activated, the out-

put is left OPEN. The circuit is activated when the IC junc-

tion temperature rises above 170

_C. The temperature

difference between the activation and deactivation set-

tings is about 30

_C.

(6)

The quality of these products have been carefully

checked; however, use of the products with applied volt-

ages, operating temperatures, or other parameters that

exceed the absolute maximum rating given may result in

the damage of the IC and the product it is used in. If the

IC is damaged, the short mode and open modes cannot

be specified, so if the IC is to be used in applications

where parameters may exceed the absolute maximum

ratings, then be sure to incorporate fuses, or other physi-

cal safety measures.

(7)

Input pins

Voltage should never be applied to the input pins when

electrical characteristics.

(8)

Back-rush voltage

Depending on the ambient conditions, environment, or

motor characteristics, the back-rush voltage may fluctu-

ate. Be sure to confirm that the back-rush voltage will not

adversely affect the operation of the IC.