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MIC2287-34BML PDF预览

MIC2287-34BML

更新时间： 2024-11-26 22:54:51
品牌 Logo 应用领域
麦瑞 - MICREL 驱动器
页数 文件大小 规格书
10页 113K
描述
1.2MHz PWM White LED Driver with OVP in 2mm 】 2mm MLF⑩ and Thin SOT-23

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中文翻译

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MIC2287-34BML 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：DFN包装说明：2 X 2 MM, MLF-8
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.04接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：S-XDSO-N8JESD-609代码：e0
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：1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：HVSSON
封装等效代码：SOLCC8,.08,20封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：240
电源：2.5/10 V认证状态：Not Qualified
座面最大高度：0.95 mm子类别：Display Drivers
最大供电电压：10 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：Tin/Lead (Sn80Pb20)
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：30
宽度：2 mm最小 fmax：1.35 MHz
Base Number Matches：1

MIC2287-34BML 数据手册

 浏览型号MIC2287-34BML的Datasheet PDF文件第2页浏览型号MIC2287-34BML的Datasheet PDF文件第3页浏览型号MIC2287-34BML的Datasheet PDF文件第4页浏览型号MIC2287-34BML的Datasheet PDF文件第5页浏览型号MIC2287-34BML的Datasheet PDF文件第6页浏览型号MIC2287-34BML的Datasheet PDF文件第7页 
MIC2287  
1.2MHz PWM White LED Driver with OVP in  
2mm × 2mm MLF™ and Thin SOT-23  
General Description  
Features  
The MIC2287 is a 1.2MHz pulse width modulated (PWM),  
boost-switching regulator that is optimized for constant-  
current, white LED driver applications. With a maximum  
outputvoltageof34Vandaswitchcurrentofover500mA, the  
MIC2287easilydrivesastringofupto8whiteLEDsinseries,  
ensuring uniform brightness and eliminating several ballast  
resistors.  
• 2.5V to 10V input voltage  
• Output voltage up to 34V  
• Over 500mA switch current  
• 1.2 MHz PWM operation  
• 95mV feedback voltage  
• Output Overvoltage Protection (OVP)  
• Options for 15V, 24V, and 34V OVP  
• <1% line and load regulation  
• <1µA shutdown current  
• Over-temperature protection  
• UVLO  
• Low profile Thin SOT-23-5 package option  
• 8-lead 2mm × 2mm MLF™ package option  
• –40°C to +125°C junction temperature range  
The MIC2287 implements a constant frequency, 1.2MHz  
PWM control scheme. The high frequency PWM operation  
saves board space by reducing external component sizes.  
The added benefit of the constant frequency PWM scheme  
as opposed to variable frequency topologies is much lower  
noise and input ripple injected back to the battery source.  
To optimize efficiency, the feedback voltage is set to only  
95mV. This reduces the power dissipation in the current set  
resistor and allows the lowest total output voltage, hence  
minimal current draw from the battery.  
Applications  
• White LED driver for backlighting:  
- Cell phones  
The MIC2287 is available with 3 levels of overvoltage protec-  
tion, 15V, 24V, and 34V. This allows designers to choose the  
smallest possible external components with the appropriate  
voltage ratings for their applications.  
- PDAs  
- GPS systems  
- Digital cameras  
- MP3 players  
- IP phones  
• Photo flash LED driver  
• LED flashlights  
• Constant current power supplies  
The MIC2287 is available in low profile Thin SOT-23 5-lead  
and an 8-lead 2mm × 2mm MLF™ package options. The  
MIC2287 has a junction temperature range of –40°C to  
+125°C.  
All support documentation can be found on Micrel’s web  
site at www.micrel.com.  
Typical Application  
CMDSH-3  
CMDSH-3  
10µH  
10µH  
MIC2287BD5  
MIC2287-34BML  
5
4
1
3
VIN  
SW  
VIN  
EN  
SW  
1-Cell  
Li Ion  
1µF  
1-Cell  
Li Ion  
1µF  
OVP  
0.22µF  
0.22µF  
FB  
EN  
95mV  
FB  
95mV  
GND  
GND  
2
6.3Ω  
6.3Ω  
3-Series White LED Driver in Thin SOT-23  
6-Series White LED Driver  
with Output OVP in 2mm × 2mm MLF™-8  
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.  
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M0510-081104  
August 2004  
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