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LM3549

更新时间： 2023-09-03 20:28:37
品牌 Logo 应用领域
德州仪器 - TI 驱动驱动器
页数 文件大小 规格书
28页 1328K
描述
高功率顺序驱动 LED 驱动器

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中文翻译

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LM3549 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：ActiveReach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
Factory Lead Time：6 weeks风险等级：5.25
Is Samacsys：N输入特性：STANDARD
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-PQCC-N24
JESD-609代码：e3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：3
端子数量：24最高工作温度：85 °C
最低工作温度：-30 °C输出特性：CONSTANT-CURRENT
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC24,.16SQ,20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：3/5 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Display Drivers
最大压摆率：3 mA最大供电电压：5.5 V
最小供电电压：2.7 V标称供电电压：3.6 V
表面贴装：YES温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4 mm
最小 fmax：20 MHzBase Number Matches：1

LM3549 数据手册

 浏览型号LM3549的Datasheet PDF文件第2页浏览型号LM3549的Datasheet PDF文件第3页浏览型号LM3549的Datasheet PDF文件第4页浏览型号LM3549的Datasheet PDF文件第5页浏览型号LM3549的Datasheet PDF文件第6页浏览型号LM3549的Datasheet PDF文件第7页 
LM3549  
www.ti.com  
SNVS640A –AUGUST 2010–REVISED MAY 2013  
LM3549 High Power Sequential LED Driver  
Check for Samples: LM3549  
1
FEATURES  
DESCRIPTION  
The LM3549 is a high power LED driver with up to  
700mA output current. It has three constant current  
LED drivers and a buck boost SMPS for driving RGB  
LEDs with high efficiency. LED drivers are designed  
for sequential drive so only one driver can be enabled  
at a time.  
2
•
•
•
•
•
•
•
Over-Current Protection  
Over-Temperature Protection  
I2C Compatible Interface  
Under-Voltage Lockout  
LED Open and Short Protection and Detection  
95% Peak Efficiency Buck-Boost Converter  
LED driver output current settings can be stored to  
integrated non-volatile memory which allows stand-  
alone operation without I2C interface. Non-volatile  
memory is rewritable so current setting can be  
changed if needed.  
NVM Memory for Calibration Data and  
Standalone Usage without I2C Control  
•
Soft Start  
The LM3549 has a fault detection feature that can  
detect several different fault conditions. In case of a  
fault error flags are set and FAULT output sends  
interrupt to control logic. Error flags can be read  
through I2C interface.  
APPLICATIONS  
•
•
Portable Video Projectors  
High Power LED Driving  
Total brightness can be controlled with PWM input or  
with master fader register if I2C interface is used.  
KEY SPECIFICATIONS  
•
•
•
•
•
Integrated buck-boost Converter  
Programmable LED Drivers  
700 mA Maximum Drive Current  
±6% Current Accuracy Over Temperature  
24-pin WQFN Package  
L1 2.2 mH  
V
IN  
L1  
L2  
2.7V to 5.5V  
VDD  
VOUT  
C
IN  
C
OUT  
10 mF  
4.7 mF  
EN  
SDA  
SCL  
LM3549  
R_OUT  
G_OUT  
B_OUT  
RED LED  
CONTROL  
LOGIC  
R_EN  
G_EN  
B_EN  
PWM  
GREEN LED  
BLUE LED  
FAULT  
GND  
Figure 1. Typical Application Circuit  
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.  
2
All trademarks are the property of their respective owners.  
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 © 2010–2013, Texas Instruments Incorporated  
 
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 		5A Flash LED Driver with Automatic VLED and ESR Detection for Mobile Camera Systems
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 		5A Flash LED Driver with Automatic VLED and ESR Detection for Mobile Camera Systems

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