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MIC2287-15YMLTR PDF预览

MIC2287-15YMLTR

更新时间: 2024-02-13 14:01:42
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
10页 395K
描述
LED DISPLAY DRIVER, DSO8, 2 X 2 MM, LEAD FREE, MLF-8

MIC2287-15YMLTR 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Transferred零件包装代码:DFN
包装说明:HVSSON,针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.22
接口集成电路类型:LED DISPLAY DRIVERJESD-30 代码:S-XDSO-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: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):260
认证状态:Not Qualified座面最大高度:0.95 mm
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: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 mm最小 fmax:1.35 MHz
Base Number Matches:1

MIC2287-15YMLTR 数据手册

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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  
output voltage of 34V and a switch current of over 500mA,  
the MIC2287 easily drives a string of up to 8 white LEDs in  
series, 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  
TheMIC2287isavailableinlowprofileThinSOT-235-leadand  
an8-lead2mm×2mmMLFpackageoptions.TheMIC2287  
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  
10µH  
CMDSH-3  
10µH  
MIC2287BD5  
MIC2287-34BML  
5
4
1
3
VIN  
SW  
VIN  
EN  
SW  
1-Cell  
Li Ion  
1µF  
1-Cell  
Li Ion  
1µF  
0.22µF  
OVP  
0.22µF  
FB  
EN  
95mV  
6.3Ω  
FB  
95mV  
6.3Ω  
GND  
GND  
2
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. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-070105  
July 2005  
1

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