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LM3552ENX PDF预览

LM3552ENX

更新时间: 2024-10-01 13:09:23
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器闪存
页数 文件大小 规格书
15页 753K
描述
IC LED DISPLAY DRIVER, QCC14, 4 X 4 MM, LLP-24, Display Driver

LM3552ENX 技术参数

生命周期:Transferred包装说明:HVQCCN,
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.29
Is Samacsys:N接口集成电路类型:LED DISPLAY DRIVER
JESD-30 代码:S-XQCC-N14长度:4 mm
复用显示功能:YES功能数量:1
区段数:2端子数量:14
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
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
认证状态:Not Qualified座面最大高度:0.8 mm
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:QUAD
宽度:4 mmBase Number Matches:1

LM3552ENX 数据手册

 浏览型号LM3552ENX的Datasheet PDF文件第2页浏览型号LM3552ENX的Datasheet PDF文件第3页浏览型号LM3552ENX的Datasheet PDF文件第4页浏览型号LM3552ENX的Datasheet PDF文件第5页浏览型号LM3552ENX的Datasheet PDF文件第6页浏览型号LM3552ENX的Datasheet PDF文件第7页 
February 2006  
LM3551/LM3552  
1A White LED Driver with Flash Timeout Protection  
General Description  
Features  
n Up to 1A total drive current  
The LM3551 and LM3552 are fixed frequency, current mode  
step-up DC/DC converters with two integrated NFETs that  
can be used for precision LED brightness control. The de-  
vices are capable of driving loads up to 1A from a single-cell  
Li-Ion battery.  
n Flash timeout protection  
n Independent Torch/Flash/Shutdown modes  
n LED disconnect in shutdown  
n Programmable soft-start limits inrush current  
n Over-voltage protection  
n Wide voltage range 2.7 to 5.5V  
n 1.25MHz constant switching frequency  
n Small, low profile package, non-pullback LLP14 (4mm x  
4mm)  
The LM3551 and LM3552 can drive one or more high current  
flash LEDs either in a high power Flash mode or a lower  
power Torch mode using the TORCH/FLASH pin. A program-  
mable Timeout function on the FTO pin forces the internal  
NFETs to turn off after a certain user defined time. An  
external SD pin (LM3551) or EN pin (LM3552) is available to  
put the device into low power shutdown mode. During shut-  
down, the feedback resistors and the load are disconnected  
from the input to avoid leakage current paths to ground.  
Applications  
n White LED Camera Flash  
n White LED Torch (Flashlight)  
n DSC (Digital Still Camera) Flash  
n Cellular Camera Phone Flash  
n PDA Camera Flash  
User programmable soft-start circuitry has been integrated  
to eliminate large inrush currents at start-up. Over-voltage  
protection circuitry and a 1.25MHz switching frequency allow  
for the use of small, low-cost output capacitors with lower  
voltage ratings.  
n Camcorder Torch (Flashlight) lamp  
The LM3551 and LM3552 are available in a low profile 14 pin  
LLP package.  
Typical Application Circuits  
20151205  
© 2006 National Semiconductor Corporation  
DS201512  
www.national.com  

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