ST1116B Datasheet, PDF (6/7 Pages) Silicon Touch Technology Inc. – Variable Speed Double Coil DC Brushless Motor Driver

點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
ST1116B
Application Notes
… The FG pin is an open-drain output. A resistor can be used to pull up the FG voltage to the
appropriate level, which depends on the voltage level of the monitoring/control system.
Without the additional pull-up resistor, the FG voltage will be V_DD when the fan stops.
… 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
600
550
500
450
400
350
300
250
200
150
100
50
0
0
25
50
75
100
125
Ambient Temperature ( ℃ )
SP-ST1116B-A.003
Version：A.003
Page：5