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LM2623MM PDF预览

LM2623MM

更新时间： 2024-11-26 00:01:07
品牌 Logo 应用领域
美国国家半导体 - NSC 振荡器转换器栅升压转换器
页数 文件大小 规格书
12页 212K
描述
General Purpose, Gated Oscillator Based, DC/DC Boost Converter

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中文翻译

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LM2623MM 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：MINI, SO-8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.15模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE FREQUENCY MODULATION
最大输入电压：5 V最小输入电压：3 V
标称输入电压：3.3 VJESD-30 代码：S-PDSO-G8
JESD-609代码：e0长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：1.2 A
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP8,.19封装形状：SQUARE
封装形式：SMALL OUTLINE, 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：1.09 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BOOST最大切换频率：2000 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：3 mm
Base Number Matches：1

LM2623MM 数据手册

 浏览型号LM2623MM的Datasheet PDF文件第2页浏览型号LM2623MM的Datasheet PDF文件第3页浏览型号LM2623MM的Datasheet PDF文件第4页浏览型号LM2623MM的Datasheet PDF文件第5页浏览型号LM2623MM的Datasheet PDF文件第6页浏览型号LM2623MM的Datasheet PDF文件第7页 
July 2003  
LM2623  
General Purpose, Gated Oscillator Based, DC/DC Boost  
Converter  
General Description  
Features  
n Good Efficiency Over a Very Wide Load Range  
n Very Low Output Voltage Ripple  
The LM2623 is a high efficiency, general purpose, step-up  
DC-DC switching regulator for battery-powered and low in-  
put voltage systems. It accepts an input voltage between .8  
and 14 volts and converts it into a regulated output voltage  
between 1.24 and 14 volts. Efficiencies up to 90% are  
achievable with the LM2623.  
n Small, Mini-SO-8 Package (Half the Footprint of  
Standard 8 pin SO Package)  
n 1.09 mm Package Height  
n Up to 2 MHz Switching Frequency  
n .8V to 14V Operating Voltage  
n 1.1V Start-up Voltage  
n 1.24V - 14V Adjustable Output Voltage  
n Up to 2A Load Current at low Output Voltages  
n 0.17Ω Internal MOSFET  
n Up to 90% Regulator Efficiency  
n 80 µA Typical Operating Current (into VDD pin of supply)  
In order to adapt to a number of applications, the LM2623  
allows the designer to vary the output voltage, the operating  
frequency (300kHz to 2 MHz) and duty cycle (17% to 90%)  
to optimize the part’s performance. The selected values can  
be fixed or can vary with battery voltage or input to output  
voltage ratio. The LM2623 uses a very simple, on/off regu-  
lation mode to produce good efficiency and stable operation  
over a wide operating range. It normally regulates by skip-  
ping switching cycles when it reaches the regulation limit  
(Pulse Frequency Modulation).  
<
n
2.5µA Guaranteed Supply Current In Shutdown  
n 4mm x 4mm Thermally Enhanced LLP Package Option  
Note: Please read the "Non-Linear Effect" and "Choosing  
The Correct C3 Capacitor" sub-sections of the Design Pro-  
cedure section of this data sheet, so that any challenges with  
designing with this part can be taken into account before a  
board design/layout is finalized.  
Applications  
n Cameras, Pagers and Cell Phones  
n PDAs,Palmtop Computers, GPS devices  
n White LED Drive, TFT or Scanned LCDs  
n Flash Memory Programming  
For Alternative Solutions, See Also: LM2700, LM2622,  
LM2731, LM2733, and LM2621.  
n Hand-Held Instruments  
n 1, 2, 3 or 4 Cell Alkaline Systems  
n 1, 2 or 3 Cell Lithium-ion Systems  
Typical Application Circuit  
20038801  
© 2003 National Semiconductor Corporation  
DS200388  
www.national.com  
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中文翻译

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