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LDS9001008-T2

更新时间： 2024-09-13 14:52:03
品牌 Logo 应用领域
IXYS 开关
页数 文件大小 规格书
30页 425K
描述
Switching Controller,

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LDS9001008-T2 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84模拟集成电路 - 其他类型：SWITCHING CONTROLLER
Base Number Matches：1

LDS9001008-T2 数据手册

 浏览型号LDS9001008-T2的Datasheet PDF文件第2页浏览型号LDS9001008-T2的Datasheet PDF文件第3页浏览型号LDS9001008-T2的Datasheet PDF文件第4页浏览型号LDS9001008-T2的Datasheet PDF文件第5页浏览型号LDS9001008-T2的Datasheet PDF文件第6页浏览型号LDS9001008-T2的Datasheet PDF文件第7页 
LDS9003 / 9001  
High Power LED Temperature and PWM Controller  
with LED-Sense TM In-Situ LED TJ Sensing  
FEATURES  
High temperature LED current de-rating and  
thermal control using the LED-Sense TM  
algorithm that directly monitors LED Tjunction  
No external thermal sensor is required  
Up to three temperature sensing and control  
channels on LDS9003 supports multi-point  
thermal monitoring or multi-color LED  
applications; LDS9001 is a single channel  
Programmable Temp vs. PWM Duty Cycle  
profiles (3 for LDS9003; 1 for LDS9001)  
Integrated PWM for dimming control of high  
brightness (HB) LED Drivers in logarithmic  
duty cycle steps from 0% to 100% (~ 0.17 dB /  
step)  
PWM Dimming Control range of 256:1  
I2C compatible serial programming interface  
The LDS9003/9001 utilizes the LED-Sense™  
sensing and control algorithm that directly measures  
the LED junction and controls the temperature by  
closed loop adjustment of the LED Driver current via  
PWM duty cycle corrections.  
Interfaces to available high side HB LED  
drivers and low cost microcontrollers  
LDS9003 is available in a small footprint  
3 mm x 3 mm2 16-pin TQFN  
LDS9001 is in a 3 x 2 mm2 8-pin DFN  
The control loop real-time adjusts the LED current via  
PWM correction codes in user programmed Look up  
Tables (LUTs) assigned to each sensing channel.  
The user programs desired correction profiles for  
every 5ºC increment from -35ºC to 120ºC. A single  
sensing channel and correction LUT is available in  
the LDS900, whereas three correction profiles are  
available in LDS9003 to support multi-point  
temperature sensing or multi-color LED applications.  
APPLICATIONS  
HB LED General Illumination Lighting  
RGB LED Projectors  
Architectural LED Lighting  
DESCRIPTION  
Integrated PWM generators support dimming and  
LED temperature vs. current compensation. The  
PWM duty cycle is programmable via the I2C serial  
interface from 0% to 100%. User-programmed 8-bit  
codes are converted to 12-bit logarithmic steps of ~  
0.17 dB per step. The PWM frequency is ~280 Hz to  
minimize noise generation.  
The LDS9003 is a 3-channel and LDS9001 is a 1-  
channel LED junction temperature monitor and  
control device intended for use in high power LED  
solid state lighting applications. It connects directly to  
a LED anode and the PWM input of available high  
power HB drivers to real-time adjust LED current to  
meet maximum LED temperature. A two wire I2C  
interface allows communication to a local low cost  
microcontroller or other remote host processor  
device.  
The EN logic input functions as a chip enable. A logic  
HIGH applied at the EN pin allows the LDS9003 /  
LDS9001 to respond to I2C communications. An  
optional external serial interface address pin is  
available for use in multi-target applications.  
LDS9003 / 9001 can improve thermal management  
of high power LED systems by controlling reliable  
LED junction temperature levels to meet maximum  
operating lifetimes. In addition, it can reduce cost by  
allowing operation at optimal LED current/luminance  
levels minimizing the number HB LED lamps per  
fixture required to meet illumination targets.  
The device operates from 2.5 to 5.5V.  
The LDS9001 is available in an 8-lead 3 x 2 mm2  
DFN package. The LDS9003 is in a 16-lead 3 x 3  
mm2 TQFN package.  
© 2009 IXYS Corp.  
Characteristics subject to change without notice  
1
Doc. No. 9003/9001DS, Rev.N1.1  
1234567...30

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