BD9479FV ROHM [Rohm], BD9479FV Datasheet - Page 17

• Manufacturer Part Number: BD9479FV
• Description: White LED Driver for large LCD Panels (DCDC Converter type)
• Manufacturer: ROHM [Rohm]

www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
BD9479FV
● ● ● ● Timer latch time (CP Pin)
● ● ● ● FAIL Signal
problem in module design.The breakdown voltage of this pin is 36V.
stop as long as CP pin is not to 2.5V.CP pin which sets the time from detection of abnormality until shutdown (Timer latch).
CP charge time「T
The CP pin will source 2.0uA current when any abnormal problem is detected.Even is an error is detected, IC does not
FAIL pin will change to Low when UVLO and latch occurred after CP charged.Please make sure that there is no logic
C
CP
[
F
]
CP
」 is set by the following equation:
T
CP
[sec]
（Under Abnormal detection）
detected(shutdown),
. 2
Normal, STB=Low,
UVLO detected
[ 5
2
Abnormality
0 .
V
state
]
10
6
[
A
17/26
]
(50 ohm typ.)
FAIL output
GND Level
OPEN
TSZ02201-0F1F0C100020-1-2
9.Aug.2012 Rev.001
Datasheet