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LM3502ITL-35/NOPB PDF预览

LM3502ITL-35/NOPB

更新时间： 2024-11-19 14:43:11
品牌 Logo 应用领域
德州仪器 - TI 驱动接口集成电路
页数 文件大小 规格书
28页 1386K
描述
Step-Up Converter for White LED Applications 10-DSBGA -40 to 125

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LM3502ITL-35/NOPB 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：,
Reach Compliance Code：compliant风险等级：8.39
接口集成电路类型：LED DISPLAY DRIVERJESD-609代码：e1
湿度敏感等级：1峰值回流温度（摄氏度）：260
端子面层：Tin/Silver/Copper (Sn/Ag/Cu)处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

LM3502ITL-35/NOPB 数据手册

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LM3502  
www.ti.com  
SNVS339B –SEPTEMBER 2005–REVISED MAY 2013  
LM3502 Step-Up Converter for White LED Applications  
Check for Samples: LM3502  
1
FEATURES  
APPLICATIONS  
2
•
Drive up to 4, 6, 8 or 10 White LEDs for Dual  
Display Backlighting  
•
•
Dual Display Backlighting in Portable Devices  
Cellular Phones and PDAs  
•
•
>80% Efficiency  
DESCRIPTION  
Output Voltage Options: 16V , 25V , 35V, and  
44V  
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 white LED current bypass FET(Field  
Effect Transistor) switches that are ideal for  
controlling dual display applications. The white LED  
current can be adjusted with a PWM signal directly  
from a microcontroller without the need of an RC filter  
network.  
•
•
•
•
•
•
Input Under-Voltage Protection  
Internal Soft Start Eliminating Inrush Current  
1 MHz Constant Switching Frequency  
Wide Input Voltage: 2.5V to 5.5V  
Small External Components  
Low Profile Packages: <1 mm Height  
–
–
10 Bump DSBGA  
16 Pin WQFN  
Typical Application  
L
22 mH  
D
MAIN:  
2 to 5  
LEDs  
Sw  
V
V
V
IN  
OUT1  
C
IN  
V
SUPPLY  
OUT2  
4.7 mF  
Cntrl  
En1  
En2  
C
OUT  
LM3502-44  
1 mF  
Fb  
AGND  
PGND  
SUB:  
2 to 5  
LEDs  
Logic  
Voltage  
Signal  
Inputs  
R1  
Figure 1. Blacklight Configuration with 10 White LEDs  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2013, Texas Instruments Incorporated  
 
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