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Datasheet > 电源电路 > 开关式稳压器或控制器> LM2623ALD/NOPB
LM2623ALD/NOPB PDF预览

LM2623ALD/NOPB

更新时间： 2024-01-24 00:57:02
品牌 Logo 应用领域
德州仪器 - TI 振荡器转换器栅升压转换器
页数 文件大小 规格书
16页 936K
描述
0.8V to 14V input voltage, 2A load current, step-up DC-DC 14-WSON -40 to 85

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中文翻译

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LM2623ALD/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：TSSOP, TSSOP8,.19针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：0.81
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 V
JESD-30 代码：S-PDSO-G8JESD-609代码：e3
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最大输出电压：14 V
最小输出电压：1.24 V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：Matte Tin (Sn)
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 mmBase Number Matches：1

LM2623ALD/NOPB 数据手册

 浏览型号LM2623ALD/NOPB的Datasheet PDF文件第2页浏览型号LM2623ALD/NOPB的Datasheet PDF文件第3页浏览型号LM2623ALD/NOPB的Datasheet PDF文件第4页浏览型号LM2623ALD/NOPB的Datasheet PDF文件第5页浏览型号LM2623ALD/NOPB的Datasheet PDF文件第6页浏览型号LM2623ALD/NOPB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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LM2623ALD/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM2623ALD TI

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