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| BD9285F Datasheet, PDF (34/39 Pages) Rohm – Boost 1channel white LED driver For large LCDs | |||
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BD9285F
3.7.9 the spontaneous detection OVP and OPEN.
STB
OVP
INSENSE
3.0V
0.1V
Datasheet
3.0V
2.9V
0.1V
0.1V
CP COUNTOR
SS
GATE
DIMOUT
FAILB
4count
4count
1.1V
STATE NORMAL COUNTOR
(*1)
(*2)
(*3)
Latch off
OFF NORMAL COUNTOR
ï¼Resetï¼
(*4)
(*5)
Latch off
(*1)â¦The time chart shows the OPEN detects faster and does not reach to the latch off state. The DIMOUT asserts high.
(*2)â¦If OPEN and OVP is detected spontaneously, OVP has the priority, and GATE=L, DIMOUT=L.
(*3)â¦IC will be latched off by the OVP factor.
(*4)â¦The latch off state is reset by the STB=L.
(*5)â¦The OVP has the priority too, in the case the OVP is detected first and the OPEN succeeds.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0F1F0C100030-1-2
11.Jul.2012 Rev.001
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