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SC643ULTRT

更新时间： 2024-09-19 09:33:19
品牌 Logo 应用领域
商升特 - SEMTECH /
页数 文件大小 规格书
26页 350K
描述
Light Management Unit with 4 LDOs and SemPulse?Interface

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中文翻译

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SC643ULTRT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFN
包装说明：3 X 3 MM, 0.60 MM HEIGHT, HALOGEN FREE AND ROHS COMPLIANT, MLPQ-20针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.82
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-XQCC-N20
JESD-609代码：e3长度：3 mm
复用显示功能：NO功能数量：1
区段数：5端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：UNSPECIFIED封装代码：HVQCCN
封装等效代码：LCC20,.11SQ,16封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
电源：3.7 V认证状态：Not Qualified
座面最大高度：0.6 mm子类别：Display Drivers
最大供电电压：5.5 V最小供电电压：2.9 V
标称供电电压：3.7 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.4 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
宽度：3 mmBase Number Matches：1

SC643ULTRT 数据手册

 浏览型号SC643ULTRT的Datasheet PDF文件第2页浏览型号SC643ULTRT的Datasheet PDF文件第3页浏览型号SC643ULTRT的Datasheet PDF文件第4页浏览型号SC643ULTRT的Datasheet PDF文件第5页浏览型号SC643ULTRT的Datasheet PDF文件第6页浏览型号SC643ULTRT的Datasheet PDF文件第7页 
SC643  
Light Management Unit with  
4 LDOs and SemPulse® Interface  
POWER MANAGEMENT  
Features  
Description  
„
„
Input supply voltage range — 2.9V to 5.5V  
Very high efficiency charge pump driver system with  
three modes — 1x, 1.5x, and 2x  
Five programmable current sinks with 29 increments  
from 0mA to 25mA  
The SC643 is a high efficiency charge pump LED driver  
using Semtech’s proprietary charge pump technology.  
Performance is optimized for use in single cell Li-ion  
battery applications.  
„
Display backlighting is provided through five matched  
current sinks with integrated fade-in and fade-out con-  
trols. The LEDs can be driven as a single set or as two  
different sets (for main and sub displays) with indepen-  
dent controls. Four low noise, low dropout (LDO) regulators  
are provided to supply power for camera module I/O and  
other peripheral circuits. An external enable pin is also  
provided for one LDO for added flexibility.  
„
„
Four programmable 200mA low-noise LDO regulators  
Programmable driver configurations for main and  
sub-display backlight  
Fade-in/fade-out feature for main and sub display  
backlight  
„
„
„
„
„
„
„
„
„
„
SemPulse single wire interface  
Backlight current accuracy — 1.5ꢀ typical  
Backlight current matching — 0.5ꢀ typical  
External enable pin for optional control of LDO4  
Automatic sleep mode with LEDs off  
Shutdown current — 0.1μA typical  
Ultra-thin package — 3 x 3 x 0.6 (mm)  
Lead free and Halogen free  
The SC643 uses the proprietary SemPulse single wire  
®
interface. This interface controls all functions of the device,  
including backlight currents and LDO voltage outputs.  
The single wire interface minimizes microcontroller and  
interface pin counts.  
WEEE and RoHS compliant  
Applications  
The SC643 enters sleep mode when all the LED drivers are  
disabled. In this mode, the quiescent current is reduced  
while the device continues to monitor the SemPulse inter-  
face. Any combination of LDOs may be enabled when in  
sleep mode.  
„
„
„
„
„
Cellular phones, smart phones, and PDAs  
LCD display modules  
Portable media players  
Digital cameras and GPS units  
Display backlighting and LED indicators  
Typical Application Circuit  
Sub  
Backlight  
SC643  
Main Backlight  
VBAT = 2.9V to 5.5V  
IN  
OUT  
SemPulse  
Interface  
SPIF  
4.7μF  
4.7μF  
Motor  
Control  
ENL4  
BYP  
BL1  
BL2  
BL3  
BL4  
22nF  
BL5  
AGND  
PGND  
LDO1  
LDO2  
LDO3  
LDO4  
VLDO1 = 1.5V to 3.3V  
VLDO2 = 1.2V to 1.8V  
VLDO3 = 1.5V to 3.3V  
Motor  
1.0μF  
1.0μF  
1.0μF  
1.0μF  
2.2μF  
2.2μF  
US Patents: 6,504,422; 6,794,926  
1
October 8, 2009  
© 2009 Semtech Corporation  
1234567...26

中文翻译

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