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MIC2289C-34YD6-TR PDF预览

MIC2289C-34YD6-TR

更新时间： 2024-09-26 14:53:35
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
9页 247K
描述
IC LED DRIVER RGLTR DIM TSOT23-6

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中文翻译

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MIC2289C-34YD6-TR 技术参数

是否无铅： 不含铅生命周期：Active
包装说明：LSSOP,Reach Compliance Code：compliant
Factory Lead Time：13 weeks风险等级：1.56
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDSO-G6
长度：2.9 mm复用显示功能：NO
功能数量：1区段数：3
端子数量：6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：LSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH座面最大高度：1.45 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端子形式：GULL WING
端子节距：0.95 mm端子位置：DUAL
宽度：1.625 mmBase Number Matches：1

MIC2289C-34YD6-TR 数据手册

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MIC2289C  
White LED Driver Internal Schottky  
Diode and OVP  
General Description  
Features  
The MIC2289C is a PWM (pulse width modulated), boost-  
switching regulator that is optimized for constant-current  
white LED driver applications. The MIC2289C features an  
internal Schottky diode and three levels of output  
overvoltage protection providing a small size and efficient  
DC/DC solution that requires only four external  
components.  
• 2.5V to 10V input voltage  
• Output voltage up to 34V with OVP  
• Internal Schottky diode  
• 1.2 MHz PWM operation  
• Over 500mA switch current  
• 95mV feedback voltage  
To optimize efficiency, the feedback voltage is set to only  
95mV. This reduces power dissipation in the current set  
resistor and allows the lowest total output voltage, hence  
minimal current draw from the battery.  
• <1% line and load regulation  
• <1µA shutdown current  
• Overtemperature protection  
• UVLO  
• Thin SOT-23 6-pin package  
• –40°C to +125°C junction temperature range  
• For higher performance specifications see the MIC2289  
The MIC2289C 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  
in caparison to variable frequency is much lower noise and  
input ripple injected to the input power source.  
Applications  
The MIC2289C clamps the output voltage in case of open  
LED conditions, protecting itself and the output capacitor.  
The MIC2289C is available with an output OVP option of  
34V.  
• White LED driver for backlighting:  
– Cell phones  
– PDAs  
– GPS systems  
– Digital cameras  
– MP3 players  
The MIC2289C is available in low profile 6-pin Thin SOT-  
23 package. The MIC2289C 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.  
– IP phones  
• LED flashlights  
• Constant current power supplies  
Typical Application  
10µH  
3-Series LED Efficiency  
82  
80  
78  
76  
74  
MIC2289C-34YD6  
VIN  
SW  
1-Cell  
Li Ion  
1µF  
0.22µF/50V  
OUT  
FB  
95mV  
EN  
GND  
72  
VIN =3.6V  
15 20 25  
70  
0
5
10  
IOUT (mA)  
7-Series White LED Driver  
MLF and MicroLeadFrame are registered 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  
M9999-081507-B  
August 2007  
1234567...9

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