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LM2623AMM PDF预览

LM2623AMM

更新时间： 2024-11-23 00:01:07
品牌 Logo 应用领域
美国国家半导体 - NSC 振荡器转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理栅升压转换器
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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LM2623AMM 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：5.13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：2.2 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

LM2623AMM 数据手册

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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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