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LM3502SQX-44 PDF预览

LM3502SQX-44

更新时间: 2024-11-22 21:54:27
品牌 Logo 应用领域
美国国家半导体 - NSC 显示驱动器转换器驱动程序和接口接口集成电路升压转换器
页数 文件大小 规格书
18页 924K
描述
Step-Up Converter for White LED Applications

LM3502SQX-44 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:1MM HEIGHT, LLP-16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.23Is Samacsys:N
接口集成电路类型:LED DISPLAY DRIVERJESD-30 代码:S-XQCC-N16
JESD-609代码:e0长度:4 mm
湿度敏感等级:1复用显示功能:NO
功能数量:1区段数:2
端子数量:16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封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE认证状态:Not Qualified
座面最大高度:0.8 mm最大供电电压:5.5 V
最小供电电压:2.5 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:NO LEAD端子节距:0.5 mm
端子位置:QUAD宽度:4 mm
Base Number Matches:1

LM3502SQX-44 数据手册

 浏览型号LM3502SQX-44的Datasheet PDF文件第2页浏览型号LM3502SQX-44的Datasheet PDF文件第3页浏览型号LM3502SQX-44的Datasheet PDF文件第4页浏览型号LM3502SQX-44的Datasheet PDF文件第5页浏览型号LM3502SQX-44的Datasheet PDF文件第6页浏览型号LM3502SQX-44的Datasheet PDF文件第7页 
September 2005  
LM3502  
Step-Up Converter for White LED Applications  
General Description  
Features  
n Drive up to 4, 6, 8 or 10 white LEDs for Dual Display  
The LM3502 is a white LED driver for lighting applications.  
For dual display or large single white LED string backlighting  
applications, the LM3502 provides a complete solution. The  
LM3502 contains two internal whitle LED current bypass  
FET(Field Effect Transitor) switches that are ideal for con-  
troling dual display applications. The while LED current can  
be adjusted with a PWM signal directly from a microcontrol-  
ler without the need of an RC filter network.  
Backlighting  
>
n
80% efficiency  
n Output Voltage Options: 16V , 25V , 35V, and 44V  
n Input Under-Voltage Protection  
n Internal Soft Start Eliminating Inrush Current  
n 1 MHz Constant-Switching Frequency  
n Wide Input Voltage: 2.5V to 5.5V  
n Small External Components  
n Low Profile Packages: 1 mm Height  
-10 Bump MicroSMD  
-16 Pin LLP  
With no external compensation, cycle-by-cycle current limit,  
over-voltage protection, and under-voltage protection, the  
LM3502 offers superior performance over other application  
specific standard product step-up white LED drivers.  
<
Applications  
n Dual Display BackLighting in Portable Devices  
n Cellular Phones and PDAs  
Typical Application  
20131701  
FIGURE 1. Blacklight Configuration with 10 White LEDs  
© 2005 National Semiconductor Corporation  
DS201317  
www.national.com  

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