點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

ST1152A

SP-ST1152A-A.006

Version

：A.006

-5-

Application Notes

battery power and driver's VDD pin as shown on application circuit.

In multiple power supply application, although power supply of control logic (VDD) and

motor driver (VS1, VS2) are separated for noise reduction, the voltage of VDD, VS1 and

VS2 pins can be expressed by

V(VS)

0.5

-

V(VDD)

≥

, where V(VDD) is the voltage of

VDD pin and V(VS) is the voltage of VS1 and VS2 pins.

The power dissipated by the IC varies widely with the supply voltage, the output current, and

loading. It is important to ensure the application does not exceed the allowable power

dissipation of the IC package. The recommended motor driver power dissipation versus

temperature is depicted as follows:

Power Dissipation-Temperature

0

100

200

300

400

500

600

700

800

900

0

25

50

75

100

125

Ambient Temperature ( ℃ )