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點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
ST1155A
ST1155A_A05.doc
Version: A.05
-5-
Application Notes
To increase system stability, it is suggestion to connect a resistor RVDD about 470Ω between
battery power and driver's VDD pin as shown on application circuit.
In multiple power supply application, although power supply of control logic and motor
driver are separated, the voltage of VDD pin must be lager than or equal to the voltage of
VS1 and VS2 pin.
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 ( ℃ )
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