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BD9486F Fiches technique(PDF) 25 Page - Rohm

No de pièce BD9486F
Description  1ch Boost up type White LED Driver for large LCD
PDF  38 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
Logo ROHM - Rohm

BD9486F Fiches technique(HTML) 25 Page - Rohm

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TSZ02201-0F1F0C100240-1-2
© 2013 ROHM Co., Ltd. All rights reserved.
15.Feb.2016 Rev.006
www.rohm.com
TSZ22111・15・001
BD9486F
3.5.3 Turn Off
REG50UVLO
STB
REG50
2.3V
DIMOUT
GATE
Vout
SS
ON
Dischange
OFF
(*1)
(*2)
PWM
RT
2.0V
STATE
Figure 34. Turn Off
(*1)…As STB=H→L、boost operation stops and REG50 starts to discharge.
(*2)…While STB=L, REG50UVLO=H, DIMOUT becomes same as PWM. REG50=5.0V is discharged by -5μA until
REG50=2.3V,and then IC becomes OFF state. REG50 is discharged rapidly and RT becomes 0V at the same time. VOUT is
discharged completely until this time. It should be set to avoid a sudden brightness.
About capacitance value setting of REG50, please refer to the section 3.2.2.



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