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LDS8720008-T2-200 PDF预览

LDS8720008-T2-200

更新时间： 2024-01-16 07:13:55
品牌 Logo 应用领域
IXYS 驱动光电二极管接口集成电路
页数 文件大小 规格书
10页 470K
描述
LED Driver, 184-Segment, PDSO8, 2 X 3 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, HALOGEN FREE AND ROHS COMPLIANT, MO-220, TDFN-8

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LDS8720008-T2-200 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：QFN包装说明：HVSON, SOLCC8,.12,20
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：R-PDSO-N8长度：3 mm
复用显示功能：NO功能数量：1
区段数：184端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC8,.12,20封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：NOT SPECIFIED
电源：3.6 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Display Drivers
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：INDUSTRIAL端子形式：NO LEAD
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：2 mm
Base Number Matches：1

LDS8720008-T2-200 数据手册

 浏览型号LDS8720008-T2-200的Datasheet PDF文件第2页浏览型号LDS8720008-T2-200的Datasheet PDF文件第3页浏览型号LDS8720008-T2-200的Datasheet PDF文件第4页浏览型号LDS8720008-T2-200的Datasheet PDF文件第5页浏览型号LDS8720008-T2-200的Datasheet PDF文件第6页浏览型号LDS8720008-T2-200的Datasheet PDF文件第7页 
LDS8720  
184 WLED Matrix Driver with Boost Converter  
FEATURES  
High efficiency boost converter with the input  
voltage range from 2.7 to 5.5 V  
No external Schottky Required (Internal  
synchronous rectifier)  
250 mV current sense voltage  
Drives up to 10 LEDs per string  
More than 180 LEDs in matrix  
0.7 MHz Switching Frequency  
Efficiency greater than 83%  
PWM LED Dimming Control Mode  
Over-voltage, under-voltage, over-current,  
and over-temperature protection  
The use of integrated synchronous rectifier makes  
the efficiency dependent on only inductor DC  
resistance. Under-voltage protection disables the part  
when VIN voltage reaches 2.0 V.  
PVIN voltage may be set equal VIN voltage or higher  
up to 15 V to increase power capability of the driver.  
Maximum number of LEDs in matrix depends on this  
voltage as shown in the table below.  
Low Shutdown Current (<1µA)  
Available in 2 x 3 x 0.8 mm 8-pin TDFN  
package  
0
The LDS8720 has thermal shutdown set at 150 C.  
APPLICATION  
Above this value, the boost converter stops  
switching. The part resumes normal operations when  
temperature drops below 130 0C.  
Color Display Backlight  
Portable Navigation and GPS Receivers  
Smart phones  
Digital Photo Frames  
Portable DVD Players  
The over-current protection provides cycle-by-cycle  
current limit.  
The internal output over-voltage protection prevents  
damage in the case of a faulty LED disconnect.  
Architectural Lighting  
The PWM control ensures brightness adjustment with  
a frequency from 100 Hz up to 30 KHz.  
DESCRIPTION  
The LDS8720 is a fixed frequency current mode  
boost converter with internal synchronous rectifier  
and cycle-by-cycle switch current limit specifically  
designed to drive matrix of LEDs in respect with the  
Table 1. Operation at 0.7 MHz allows use of small  
value low profile inductor (10 – 33 µH) and 1 µF 50 V  
ceramic capacitor.  
The EN/PWM logic input functions as a chip enable  
and LED current PWM contol pin.  
The device is available in 8-pin TDFN 2 x 3 mm  
package with a max height of 0.8 mm.  
Table 1 Matrix configuration for LDS8720  
String  
Current  
max, mA,  
Number of  
LED per string  
Number  
of strings  
PVIN MIN,  
V
TYPICAL APPLICATION CIRCUIT  
2.7  
3.0  
4.0  
5.0  
7.5  
10  
12.5  
15  
15  
10  
10  
10  
10  
10  
10  
10  
10  
8
30  
30  
30  
30  
30  
30  
30  
30  
30  
1 – 3  
1 – 4  
1 – 5  
1 – 6  
1 – 9  
1 – 12  
1 – 15  
1 – 18  
1 – 23  
© 2011 IXYS Corp.  
Characteristics subject to change without notice  
1
Doc. No. 8720DS, Rev. N1.1  
1234567...10

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