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LTC3208 PDF预览

LTC3208

更新时间： 2024-02-18 19:57:16
品牌 Logo 应用领域
凌特 - Linear 显示器控制器
页数 文件大小 规格书
24页 332K
描述
High Current Software Confi gurable Multidisplay LED Controller

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中文翻译

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LTC3208 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC32,.2SQ,20
针数：32Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.3数据输入模式：SERIAL
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-XQCC-N32
JESD-609代码：e3长度：5 mm
湿度敏感等级：1复用显示功能：NO
功能数量：1区段数：1
端子数量：32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封装等效代码：LCC32,.2SQ,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 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：1.5 V标称供电电压：3 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL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：30
宽度：5 mm最小 fmax：1.2 MHz

LTC3208 数据手册

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LTC3208  
High Current Software  
Configurable Multidisplay  
LED Controller  
U
DESCRIPTIO  
FEATURES  
The LTC®3208 is a highly integrated multidisplay LED  
controller.Thepartcontainsa1Ahighefficiency,lownoise  
chargepumptoprovidepowertotheMAIN,SUB,RGB,CAM  
and AUX LED displays. The LTC3208 requires only small  
ceramic capacitors and one current set resistor to form a  
complete LED power supply and current controller.  
■
1x/1.5x/2x Charge Pump Provides Up to 95%  
Efficiency  
■
Up to 1A Total Output Current  
■
17 Current Sources Available as MAIN, SUB, RGB,  
CAM and AUX LED Drivers  
■
LED ON/OFF, Brightness Level and Display  
2
Configuration Programmable Using 2-Wire I C™  
The maximum display currents are set by a single ex-  
ternal resistor. Current for each LED is controlled by a  
precision internal current source. Dimming and On/Off  
Interface  
■
Low Noise Constant Frequency Operation with Flying  
Capacitor Edge Rate Control  
2
for all displays is achieved via the I C serial interface.  
■
Automatic Charge Pump Mode Switching  
256 brightness levels are available for the MAIN and SUB  
displays. 16 levels are available for the RGB and CAM  
displays. Four AUX current sources can be independently  
■
Internal Soft-Start Limits Inrush Current During  
Startup and Mode Switching  
■
Open/Shorted LED Protection  
2
assigned via the I C port to the CAM, SUB, MAIN or AUX  
■
Short-Circuit/Thermal Protection  
DAC controlled displays.  
■
256 Brightness States for MAIN and SUB Displays  
The LTC3208 charge pump optimizes efficiency based  
on the voltage across the LED current sources. The part  
powers up in 1x mode and will automatically switch to  
boost mode whenever any enabled LED current source  
begins to enter dropout. The first dropout switches the  
part into 1.5x mode and a subsequent dropout switches  
the LTC3208 into 2x mode. The part is available in a small  
5mm × 5mm 32-lead QFN package.  
■
4096 Color Combinations for the RGB Display  
■
5mm × 5mm 32-Lead QFN Plastic Package  
U
APPLICATIO S  
■
Video/Camera Phones with QVGA + Displays  
, LTC and LT are registered trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners. Protected by U.S. Patents including  
6411531.  
U
TYPICAL APPLICATIO  
4-LED MAIN Display  
Efficiency vs Input Voltage  
C2  
2.2  
C3  
2.2  
F
F
100  
90  
C1P C1M C2P C2M  
CPO  
MAIN  
SUB  
CAMERA  
RGB  
AUX  
80  
70  
60  
50  
40  
30  
20  
10  
0
V
BAT  
C1  
4.7  
V
BAT1,2,3  
F
C4  
4.7  
F
LTC3208  
4
MAIN1-4  
SUB1-2  
CAM1-4  
RGB  
2
4
3
4
2
SCL/SDA  
I C  
4 LEDs AT 15mA/LED  
(TYP V AT 15mA = 3.2V)  
F
T
A
= 25°C  
ENRGBS  
CAMHL  
ENABLE DISABLE  
LOW HI  
AUX1-4  
GND  
3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4  
(V)  
3208 TA01a  
R
REF  
V
BAT  
24.3k  
1%  
3208 TA01b  
3208fa  
1
1234567...24

中文翻译

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