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參數(shù)資料
| 型號(hào)： | SC635EVB |
| 廠商： | Semtech Corporation |
| 英文描述： | Charge Pump Flash LED Driver |
| 中文描述： | 電荷泵閃光LED驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 357K |
| 代理商： | SC635EVB |
www.semtech.com
POWER MANAGEMENT
Description
SC635
Charge Pump
Flash LED Driver
u
Twoselectablemodes-FlashandSpotlight
u
200mAmaxoutput-FlashMode
u
Spotlightmodesetto40%ofFlashCurrent
u
3.0Vto5.25VInputRange
u
Externalpinsforcontrolofflashandspotlightmodes
forsynchronizationtoacameramoduleorgraphics
controller
u
Shortcircuit,over-voltage,andover-temperature
protection
u
Soft-startfunctionality
u
MicroLeadPackageMLPD-0,3mmx3mm
December2,2005
Features
TypicalApplicationCircuit
TheSC635isahigh-currentchargepumpdesignedspe-
cificallyforusewithwhiteLEDsusedincameraflashap
-
plications.Onlytwosmallbucketcapacitorsarerequired
todeveloptheoutputdrive,providingalowEMIsolution
comparedtoinductiveboostregulators.
TheSC635hastwomodesofoperation:Flashmodeand
Spotlightmode.InFlashmode,theSC635iscapableof
delivering200mAtoahigh-intensityLEDduringimage
capture.InSpotlightmodetheSC635outputs40%ofthe
Flashmodecurrentforgeneralpurposelightingorstatus
indication.
AnexternalresistorisconnectedinserieswiththeLEDto
setthecurrent.InFlashmode,thisresistorcandissipate
upto50mW,reducingthepowerdissipationrequirement
oftheSC635.Theflashinput(FLASH)overridesthecon
-
trolinput(CTRL)tomakesuretheflashfunctionisacti
-
vatedwhencalledfor.
ThethermallyefficientMLPD-10packageandceramicby
-
passandbucketcapacitorsmaketheSC635ahighout-
putcurrentdriverthatrequiresminimalPCBarea.
u
MobileCameraPhones
u
DigitalCameras
u
PDAswithBuilt-inCameras
VBAT
SC635
VIN
1
C2-
2
C2+
10
C1-
4
C1+
8
VOUT
9
FLASH
5
CTRL
7
GND
3
ISET
6
1μF
1μF
FLASH
CTRL
1μF
white LED
RSET
10μF
TypicalApplicationCircuit
Applications
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC635MLTRT | 制造商:Semtech Corporation 功能描述:LED DRVR 1Segment 3.3V/5V 10-Pin MLPD T/R |
| SC63610FN116HR2 | 制造商:ON Semiconductor 功能描述: |
| SC63610FN125HR | 制造商:ON Semiconductor 功能描述: |
| SC63610FN125HR2 | 制造商:ON Semiconductor 功能描述: |
| SC63610FN131HR2 | 制造商:ON Semiconductor 功能描述: |
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