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EL1848
Data Sheet
White LED Step-Up Regulator
The EL1848 is a constant current
boost regulator specially designed for
driving white LEDs. It can drive 3
LEDs in series or up to 9 LEDs in parallel/series
configuration and achieves efficiency up to 91%.
The brightness of the LEDs is adjusted through a voltage
level on the CNTL pin. When the level falls below 0.1V, the
chip goes into shut-down mode and consumes less than
1μA of supply current for V IN less than 5.5V.
The EL1848 is available in 8-pin TSOT and MSOP
packages. The TSOT is just 1mm high, compared to
1.45mm for the standard SOT-23 package.
March 31, 2004
Features
? 2.6V to 13.2V input voltage
? 14V maximum output voltage
? Drives up to 9 LEDs, 3 in a series
? 1MHz switching frequency
? Up to 91% efficiency
? 1μA maximum shut-down current
? Dimming control
? 8-pin TSOT and MSOP packages
? Pb-free Available
FN7427
Ordering Information
PART
NUMBER PACKAGE
TAPE & REEL PKG. DWG. #
Applications
? PDAs
? Cellular phones
EL1848IWT-T7
EL1848IWT-T7A
EL1848IWTZ-T7
(See Note)
8-Pin TSOT
8-Pin TSOT
8-Pin TSOT
(Pb-free)
7” (3K pcs)
7” (250 pcs)
7” (3K pcs)
MDP0049
MDP0049
MDP0049
? Digital cameras
? White LED backlighting
Typical Connection
EL1848IWTZ-
T7A (See Note)
8-Pin TSOT
(Pb-free)
7” (250 pcs)
MDP0049
2.6V TO
5.5V C 1
L
33μH
D
C 2
EL1848IY
EL1848IY-T7
EL1848IY-T13
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
-
7”
13”
MDP0043
MDP0043
MDP0043
4.7μF
VIN
LX
1μF
NOTE: Intersil Pb-free products employ special Pb-free material
VOUT
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and
CS
R 1
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
V CTRL
C 3
CNTL
COMP
PGND
SGND
5 ?
0.1μF
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright ? Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
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相关代理商/技术参数
EL1881 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Sync Separator, Low Power
EL1881C 制造商:ELANTEC 制造商全称:ELANTEC 功能描述:Sync Separator, Low Power
EL1881CN 功能描述:IC VIDEO SYNC SEPARATOR 8-DIP RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064
EL1881CS 功能描述:IC VIDEO SYNC SEPARATOR 8-SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064
EL1881CS-T13 功能描述:IC VIDEO SYNC SEPARATOR 8-SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064
EL1881CS-T7 功能描述:IC VIDEO SYNC SEPARATOR 8-SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064
EL1881CSZ 功能描述:视频 IC EL1881CSZ SYNC SEPERATOR RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel
EL1881CSZ-T13 功能描述:视频 IC EL1881CSZ SYNC SEPERATOR RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel