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LM2623LD/NOPB PDF预览

LM2623LD/NOPB

更新时间: 2024-11-24 01:09:31
品牌 Logo 应用领域
德州仪器 - TI 开关
页数 文件大小 规格书
22页 1324K
描述
General-Purpose, Gated-Oscillator-Based DC/DC Boost Converter

LM2623LD/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:SON
包装说明:VSON,针数:14
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:1 week
风险等级:0.69模拟集成电路 - 其他类型:SWITCHING REGULATOR
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-XDSO-N14JESD-609代码:e3
长度:4 mm湿度敏感等级:3
功能数量:1端子数量:14
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:VSON封装形状:SQUARE
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:0.8 mm
表面贴装:YES切换器配置:BOOST
最大切换频率:2000 kHz温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:4 mm
Base Number Matches:1

LM2623LD/NOPB 数据手册

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LM2623  
SNVS188H MAY 2004REVISED NOVEMBER 2014  
LM2623 General-Purpose, Gated-Oscillator-Based DC/DC Boost Converter  
1 Features  
3 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 0.8 V and 14 V and converts it  
into a regulated output voltage between 1.24 V and  
14 V. Efficiencies up to 90% are achievable with the  
LM2623.  
1
Good Efficiency Over a Very Wide Load Range  
Very Low Output Voltage Ripple  
Up to 2-MHz Switching Frequency  
0.8-V to 14-V Operating Voltage  
1.1-V Start-up Voltage  
1.24-V to 14-V Adjustable Output Voltage  
Up to 2-A Load Current at Low Output Voltages  
0.17-Ω Internal MOSFET  
In order to adapt to a number of applications, the  
LM2623 allows the designer to vary the output  
voltage, the operating frequency (300 kHz 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  
Up to 90% Regulator Efficiency  
80-µA Typical Operating Current (Into VDD Pin of  
Supply)  
ratio. The LM2623 uses  
a very simple, on/off  
< 2.5-µA Ensured Supply Current In Shutdown  
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).  
Small 8-Pin VSSOP Package (Half the Footprint  
of Standard 8-Pin SOIC Package); 1.09-mm  
Package Height  
4-mm x 4-mm Thermally Enhanced WSON  
Package Option  
Note: Please read the Non-Linear Effect and  
Choosing the Correct C3 Capacitor sections so that  
any challenges with designing with this part can be  
taken into account before a board design/layout is  
finalized.  
2 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.  
Device Information(1)  
Hand-Held Instruments  
PART NUMBER  
LM2623  
PACKAGE  
WSON (14)  
VSSOP (8)  
BODY SIZE (NOM)  
4.00 mm x 4.00 mm  
3.00 mm x 3.00 mm  
1, 2, 3, or 4 Cell Alkaline Systems  
1, 2, or 3 Cell Lithium-ion Systems  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
Typical Application Circuit  
D1  
L1  
4.7PH  
R3  
150k  
3A  
C3  
V
IN  
2 Cells  
4.7pF  
8
+
C1  
22PF  
SW  
7
2
5V  
BOOT  
EN  
3
FREQ  
LM2623  
C2  
100PF  
tant  
6
4
RF1  
300k  
V
DD  
1
PGND  
FB  
SGND  
5
RF2  
100k  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 

LM2623LD/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM2623LD TI

完全替代

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

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