ST1115D SITI [Silicon Touch Technology Inc.], ST1115D Datasheet - Page 11

• Manufacturer Part Number: ST1115D
• Description: PWM Speed Control Double Coil Brushless DC Motor Driver
• Manufacturer: SITI [Silicon Touch Technology Inc.]

5. Lock protection and restart timing
(1) If the fan is locked, ST1115 will turn the driver off, avoiding high-current damage of the
(2) Assume that the capacitance of the capacitor connected to the CF pin is C
6. Power Dissipation v.s. Temperature
(1) The power dissipation is affected by various factors, such as the supply voltage, the
driver. After a period T
on for a short time T
values of T
protection time is roughly 3*C
roughly 2.5-sec lock protection and 800-msec lock restart.
output current, and loading. It is important to ensure the applications do not exceed
the allowable power dissipation of the IC package. The allowable motor driver power
dissipation versus temperature is depicted as follows:
SP-ST1115CD-A.005
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
OFF
and T
ON
ON
OFF
depend on the capacitor connected to the CF pin.
. The proportion of T
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
of turning off, it will try to restart the fan by turning the driver
50
0
0
F
second. The recommended capacitance C
Ambient Temperature ( ℃ )
25
Version
Power Dissipation-Temperature
50
：
OFF
A.005
75
to T
100
ON
is around 3:1. The absolute
125
ST1115C/ST1115D
SOP8
MS OP 8
Page
F
F
：
is 1 μ F for
. The lock
10