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MIC328924YML PDF预览

MIC328924YML

更新时间： 2024-11-25 09:26:35
品牌 Logo 应用领域
美国微芯 - MICROCHIP 驱动接口集成电路
页数 文件大小 规格书
15页 613K
描述
LED DISPLAY DRIVER, DSO8

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中文翻译

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MIC328924YML 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：HVSON,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.57接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：S-XDSO-N8JESD-609代码：e3
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：UNSPECIFIED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：1 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：MATTE TIN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 mm
Base Number Matches：1

MIC328924YML 数据手册

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MIC3289  
1.2MHz PWM White LED Driver with  
Internal Schottky Diode and True 1-Wire  
Digital Control  
General Description  
Features  
The MIC3289 is a PWM boost-switching regulator that is  
optimized for constant-current white LED driver  
applications. The MIC3289 features an internal Schottky  
diode, allowing an efficient DC/DC solution that requires  
only 4 external components.  
• Single wire combines 16 level logarithmic brightness &  
shutdown control  
• 16V / 24V OVP options supports up to 4 & 6 WLEDs  
• Start-up in any one of 16 brightness levels  
• Internal Schottky diode  
• 2.5V to 6.5V input voltage  
• 1.2 MHz PWM operation  
The MIC3289 allows for a single wire simple digital  
interface to control the dimming over 16 steps with a log  
scale to give better resolution at the lower currents and to  
better match the sensitivity of the human eye. The pre-  
programming feature allows the user to select any one of  
the 16 WLED current levels as the start-up brightness  
level.  
• Over 500mA switch current  
• 250mV reference voltage  
•
5% LED current accuracy  
• <1µA shutdown current  
• Over temperature protection  
• UVLO  
The feedback voltage of the MIC3289 is only 250mV,  
allowing high efficiency while retaining excellent accuracy  
for the white LED current.  
The MIC3289 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.  
• Thin SOT23-6L package option  
• 2mm × 2mm leadless MLF®-8L package option  
• –40oC to +125oC junction temperature range  
The 2.5V to 6.5V input voltage range of MIC3289 allows  
direct operation from single cell Li Ion as well as 3- to 4-  
Applications  
• White/Blue LED driver for backlighting  
cell NiCad/NiMH/Alkaline batteries.  
Battery life is  
preserved with a low 1µA shutdown current.  
-
-
-
-
-
Cell phones  
PDAs  
GPS systems  
Digital cameras  
Multimedia / MP3 players  
The MIC3289 is available in a low profile Thin SOT23 6-  
lead package and a 2mm × 2mm MLF®-8L package and  
has 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.  
• LED flashlights  
• Constant current power supplies  
___________________________________________________________________________________________________________  
MicroLead Frame and MLF are registered trademarks of Amkor Technologies.  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-061807  
(408) 944-0800  
June 2007  
1234567...15

中文翻译

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MIC3291-18YML MICREL

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