LB11867FV-TLM-E Datasheet, PDF (8/9 Pages) ON Semiconductor – For Fan Motor Variable Speed Single-phase Full-wave Pre-driver

Control timing chart (Soft start)
(1)At VTH < RMI voltage
LB11867FV
RMI voltage
S-S voltage
VTH voltage
0V
Lock protection
100%
ONDUTY
Soft start section
3.0V
CPWM
1.1V
VTH set speed
0%
T
(2) At VTH > RMI voltage
VTH voltage
RMI voltage
S-S voltage
0V
100%
Lock protection
Soft
start
section
ONDUTY
0%
RMI set speed
3.0V
CPWM
1.1V
T
Adjust the S-S pin voltage gradient by means of the capacitance of the capacitor between the S-S pin and 5VREG..
Recommended capacitor: 0.1μ to 1μF
No.A0195-8/9