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MIC3291-18YML-TR PDF预览

MIC3291-18YML-TR

更新时间： 2024-11-20 19:40:47
品牌 Logo 应用领域
美国微芯 - MICROCHIP 驱动光电二极管接口集成电路
页数 文件大小 规格书
17页 771K
描述
LED Driver, 6-Segment, PDSO8, 2 X 2 MM, GREEN, MLF-8

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MIC3291-18YML-TR 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：HVSON,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.6数据输入模式：SERIAL
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-PDSO-N8
JESD-609代码：e4长度：2 mm
湿度敏感等级：1复用显示功能：NO
功能数量：1区段数：6
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.95 mm
最大供电电压：6.5 V最小供电电压：2.5 V
标称供电电压：3.6 V表面贴装：YES
温度等级：AUTOMOTIVE端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
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：40
宽度：2 mmBase Number Matches：1

MIC3291-18YML-TR 数据手册

 浏览型号MIC3291-18YML-TR的Datasheet PDF文件第2页浏览型号MIC3291-18YML-TR的Datasheet PDF文件第3页浏览型号MIC3291-18YML-TR的Datasheet PDF文件第4页浏览型号MIC3291-18YML-TR的Datasheet PDF文件第5页浏览型号MIC3291-18YML-TR的Datasheet PDF文件第6页浏览型号MIC3291-18YML-TR的Datasheet PDF文件第7页 
MIC3291  
1.2MHz PWM White LED Driver  
with Internal Schottky Diode and  
Single-Wire Linear Brightness  
Control  
General Description  
Features  
The MIC3291 is a PWM switching boost regulator that is  
optimized for constant current white LED (WLED) driver  
applications. The MIC3291 features an internal Schottky  
diode, allowing an efficient DC/DC solution that requires  
only four external components.  
• Single wire combines 16 level linear brightness and  
shutdown control  
• 18V / 25V OVP options supports up to four and six  
WLEDs  
• Startup in any one of 16 brightness levels  
• Internal Schottky diode  
• 2.5V to 6.5V input voltage  
• 1.2MHz PWM operation  
• Over 500mA switch current  
The MIC3291 allows for a single-wire simple digital  
interface to control the dimming over 16 steps with a linear  
scale. The preprogramming feature allows the user to  
select any one of the 16 WLED current levels as the start  
up brightness level.  
The feedback voltage of the MIC3291 is only 250mV,  
allowing high efficiency while retaining excellent accuracy  
for the WLED current.  
• 250mV reference voltage  
• ±5% LED current accuracy  
• <1µA shutdown current  
• UVLO and over-temperature protection  
• Thin SOT23-6L package option  
• 2mm × 2mm leadless MLF® package option  
• –40oC to +125oC junction temperature range  
The MIC3291 implements a constant frequency 1.2MHz  
PWM control scheme. The high frequency PWM operation  
saves board space by reducing external component sizes.  
The 1.2MHz PWM scheme also reduces switching noise  
and ripple to the input power source.  
The 2.5V to 6.5V input voltage range of the MIC3291  
allows direct operation from single cell Li-Ion as well as 3  
to 4 cell NiCad/NiMH/Alkaline batteries. Battery life is  
preserved with a low 1µA shutdown current.  
Applications  
• Mobile handsets  
The MIC3291 is available in a low profile Thin SOT23 6-  
pin and 2mm × 2mm MLF® 8-pin packages with a junction  
temperature range of –40°C to +125°C.  
Data sheets and support documentation can be found on  
Micrel’s web site at: www.micrel.com.  
• LCD handset backlighting  
• Digital cameras  
• Portable media players/MP3 players  
• Portable applications  
___________________________________________________________________________________________________________  
Typical Application  
White LED Driver with OVP and Digital Control  
MLF and MicroLead Frame are registered trademarks of Amkor Technologies, Inc.  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-092810  
(408) 944-0800  
September 2010  
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