BD9415FS Datasheet, PDF (23/34 Pages) Rohm – White LED Driver for 4Ch Large LCD Panels (DC/DC converter type)

BD9415FS
3.5.3 LED SHORT Detection
PWM1~4
VLED1
LED1=SHORT
LED1=Normal
Condition
6V
6V
LED1=SHORT
LED1=Normal
Condition
VLED2~4
Internal signal
(SHORT DET)
Internal signal
(Abnormal Count)
ILED1
ILED2~4
FAILB
Internal signal
(Auto Restart)
IC State
6V
Mask
(4counts)
Ab
normal
<
16384
count
Mask
(3counts)
16384count
LED1 = OFF
16384count
LED1 = OFF
Normal
Abnormal
Counting
Abnormal
Counting
AUto Restart
Count Start
(131072count)
LED1 = OFF
131072count
Abnormal
Counting
Normal
Judge Fail
Figure 26. LED SHORT Detection
131072count
LED1 = OFF
Normal
Judge OK
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
23/30
TSZ02201-0F2F0C100140-1-2
23.May.2016 Rev.001