 English |
|
|
|
|
|
|
|
| BD9483F Datasheet, PDF (22/32 Pages) Rohm – White LED Driver for large LCD Panels (DCDC Converter type) | |||
| |||
| ◁ |
BD9483F,FV
â3.7.3 the soft start function
Datasheet
Figure 35.
(*1)â¦The SS pin charge does not start by just STB=H. âPWM1=H or PWM2=Hâ is required to start the soft start. In the low SS
voltage, the GATE pin duty is depend on the SS voltage. And as the SS is less than 0.1V, the pulse does not output.
(*2)â¦By the low STB=L, the SS pin is discharged immediately.
(*3)â¦As the STB recovered to STB=H, The SS charge starts immediately by the logic âPWM1 or PWM2=Hâ in this chart.
(*4)â¦The SS pin is discharged immediately by the UVLO=L and FAILB is changed OPEN to Low.
(*5)â¦The SS pin is discharged immediately by the VCCUVLO=L and FAILB is changed OPEN to Low.
(*6)â¦The SS pin is discharged immediately by the REG90UVLO=L and FAILB keeps OPEN.
(*7)â¦The SS pin is not discharged by the abnormal detection of the latch off type such as OVP until the latch off.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ã»15ã»001
22/29
TSZ02201-0F1F0C100100-1-2
28.Nov.2013 Rev.003
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese