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LM2756TMX PDF预览

LM2756TMX

更新时间: 2024-09-25 04:44:35
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器电感器
页数 文件大小 规格书
16页 507K
描述
Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in レSMD

LM2756TMX 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:VFBGA, BGA20,4X5,16Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.1数据输入模式:SERIAL
接口集成电路类型:LED DISPLAY DRIVERJESD-30 代码:R-PBGA-B20
JESD-609代码:e1长度:2.015 mm
湿度敏感等级:1复用显示功能:NO
功能数量:1区段数:8
端子数量:20最高工作温度:85 °C
最低工作温度:-30 °C封装主体材料:PLASTIC/EPOXY
封装代码:VFBGA封装等效代码:BGA20,4X5,16
封装形状:RECTANGULAR封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH
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:0.6 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:OTHER
端子面层:Tin/Silver/Copper (Sn/Ag/Cu)端子形式:BALL
端子节距:0.4 mm端子位置:BOTTOM
处于峰值回流温度下的最长时间:40宽度:1.615 mm
Base Number Matches:1

LM2756TMX 数据手册

 浏览型号LM2756TMX的Datasheet PDF文件第2页浏览型号LM2756TMX的Datasheet PDF文件第3页浏览型号LM2756TMX的Datasheet PDF文件第4页浏览型号LM2756TMX的Datasheet PDF文件第5页浏览型号LM2756TMX的Datasheet PDF文件第6页浏览型号LM2756TMX的Datasheet PDF文件第7页 
October 2007  
LM2756  
Multi-Display Inductorless LED Driver with 32 Exponential  
Dimming Steps in µSMD  
General Description  
Features  
The LM2756 is a highly integrated, switched-capacitor, multi-  
display LED driver that can drive up to 8 LEDs in parallel with  
a total output current of 180mA. Regulated internal current  
sources deliver excellent current and brightness matching in  
all LEDs.  
Drives up to 8 LEDs with up to 30mA of Diode Current  
Each  
32 Exponential Dimming Steps with 800:1 Dimming Ratio  
for Group A (Up to 6 LEDs)  
8 Linear Dimming States for Groups B (Up to 3 LEDs) and  
D1C (1 LED)  
Programmable Auto-Dimming Function  
3 Independently Controlled LED Groups Via I2C  
The LED driver current sinks are split into three independently  
controlled groups. The primary group (Group A) can be con-  
figured to drive four, five or six LEDs for use in the main phone  
display, while the secondary group (Group B) can be config-  
ured to drive one, two or three LEDs for driving secondary  
displays, keypads and/or indicator LEDs. An additional driver,  
D1C, is provided for additional indicator lighting functions.  
Compatible Interface  
Up to 90% Efficiency  
Total Solution Size < 21mm2  
Low Profile 20 Bump µSMD Package  
(1.615mm × 2.015mm × 0.6mm)  
0.4% Accurate Current Matching  
The device provides excellent efficiency without the use of an  
inductor by operating the charge pump in a gain of 3/2 or in  
Pass-Mode. The proper gain for maintaining current regula-  
tion is chosen, based on LED forward voltage, so that effi-  
ciency is maximized over the input voltage range.  
Internal Soft-Start Limits Inrush Current  
True Shutdown Isolation for LED’s  
The LM2756 is available in National’s tiny 20-bump, 0.4mm  
pitch, thin µSMD package.  
Wide Input Voltage Range (2.7V to 5.5V)  
Active High Hardware Enable  
Applications  
Dual Display LCD Backlighting for Portable Applications  
Large Format LCD Backlighting  
Display Backlighting with Indicator Light  
Typical Application Circuit  
30009701  
© 2007 National Semiconductor Corporation  
300097  
www.national.com  

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