BD9486F_16 datasheet(25/38 Pages) ROHM

поискавой системы для электроныых деталей

BD9486F датащи(PDF) 25 Page - Rohm

номер детали	BD9486F

подробное описание детали	1ch Boost up type White LED Driver for large LCD

PDF	38 Pages

Scroll/Zoom	100%

производитель	ROHM [Rohm]

домашняя страница	http://www.rohm.com

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25 / 38 page

Datasheet

25/34

TSZ02201-0F1F0C100240-1-2

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

Dischange

OFF

(*1)

(*2)

PWM

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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