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LM2623MM PDF预览

LM2623MM

更新时间： 2024-11-23 12:18:39
品牌 Logo 应用领域
德州仪器 - TI 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栅升压转换器
页数 文件大小 规格书
16页 936K
描述
LM2623 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

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：TSSOP, TSSOP8,.19针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
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：NOT SPECIFIED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 
LM2623  
www.ti.com  
SNVS188G –MAY 2004–REVISED DECEMBER 2005  
LM2623 General Purpose, Gated Oscillator Based, DC/DC Boost Converter  
Check for Samples: LM2623  
1
FEATURES  
DESCRIPTION  
The LM2623 is a high efficiency, general purpose,  
step-up DC-DC switching regulator for battery-  
powered and low input 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.  
2
•
•
•
Good Efficiency Over a Very Wide Load Range  
Very Low Output Voltage Ripple  
Small, VSSOP-8 Package (Half the Footprint of  
Standard 8 pin SOIC Package)  
•
•
•
•
•
•
•
•
•
1.09 mm Package Height  
Up to 2 MHz Switching Frequency  
.8V to 14V Operating Voltage  
1.1V Start-up Voltage  
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  
1.24V - 14V Adjustable Output Voltage  
Up to 2A Load Current at Low Output Voltages  
0.17Ω Internal MOSFET  
ratio. The LM2623 uses  
a very simple, on/off  
Up to 90% Regulator Efficiency  
regulation mode to produce good efficiency and  
stable operation over a wide operating range. It  
normally regulates by skipping switching cycles when  
it reaches the regulation limit (Pulse Frequency  
Modulation).  
80 µA Typical Operating Current (into VDD Pin  
of Supply)  
•
•
<2.5µA Specified Supply Current In Shutdown  
4mm x 4mm Thermally Enhanced WSON  
Package Option  
Note: Please read the Non-Linear Effect and  
Choosing The Correct C3 Capacitor sub-sections of  
the Design Procedure 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  
•
•
•
•
•
•
•
Cameras, Pagers and Cell Phones  
PDAs, Palmtop Computers, GPS Devices  
White LED Drive, TFT or Scanned LCDs  
Flash Memory Programming  
For Alternative Solutions, See Also: LM2700,  
LM2622, LM2731, LM2733, and LM2621.  
Hand-Held Instruments  
1, 2, 3 or 4 Cell Alkaline Systems  
1, 2 or 3 Cell Lithium-ion Systems  
Typical Application Circuit  
D1  
L1  
4.7mH  
R3  
150k  
3A  
C3  
V
IN  
2 Cells  
4.7pF  
8
SW  
+
C1  
22mF  
7
2
5V  
BOOT  
EN  
3
1
FREQ  
LM2623  
C2  
100mF  
6
4
RF1  
300k  
V
DD  
tan  
t
PGND  
FB  
SGND  
5
RF2  
100k  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2004–2005, Texas Instruments Incorporated  
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中文翻译

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LM2623MM 替代型号

型号 品牌 替代类型 描述 数据表
LM2623MM/NOPB TI

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 0.8V to 14V input voltage, 2A load current, step-up DC-DC 8-VSSOP -40 to 85
LM2623AMM TI

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 LM2623 General Purpose, Gated Oscillator Based, DC/DC Boost Converter

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LM2630MTC-ADJX TI

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