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RS5RM4339A-T2 PDF预览

RS5RM4339A-T2

更新时间: 2024-02-21 10:40:18
品牌 Logo 应用领域
理光 - RICOH 开关光电二极管
页数 文件大小 规格书
29页 582K
描述
Switching Regulator, Voltage-mode, 0.25A, 60kHz Switching Freq-Max, CMOS, PDSO8, SOP-8

RS5RM4339A-T2 技术参数

是否Rohs认证:不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:LSOP,
针数:8Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.92Is Samacsys:N
其他特性:DETECTOR VOLTAGE = 3.9 VOLT模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:10 V最小输入电压:1.2 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e0
长度:5.2 mm功能数量:1
端子数量:8最高工作温度:80 °C
最低工作温度:-30 °C最大输出电流:0.25 A
标称输出电压:4.3 V封装主体材料:PLASTIC/EPOXY
封装代码:LSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.7 mm
表面贴装:YES切换器配置:BOOST
最大切换频率:60 kHz技术:CMOS
温度等级:COMMERCIAL EXTENDED端子面层:TIN LEAD
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:4.4 mmBase Number Matches:1

RS5RM4339A-T2 数据手册

 浏览型号RS5RM4339A-T2的Datasheet PDF文件第4页浏览型号RS5RM4339A-T2的Datasheet PDF文件第5页浏览型号RS5RM4339A-T2的Datasheet PDF文件第6页浏览型号RS5RM4339A-T2的Datasheet PDF文件第8页浏览型号RS5RM4339A-T2的Datasheet PDF文件第9页浏览型号RS5RM4339A-T2的Datasheet PDF文件第10页 
RS5RM  
OPERATION OF STEP-UP DC/DC CONVERTER  
Step-up DC/DC Converter charges energy in the inductor when Lx Transistor (LxTr) is ON, and discharges the  
energy with the addition of the energy from Input Power Source thereto when LxTr is OFF, so that a higher out-  
put voltage than the input voltage is obtained.  
The operation will be explained with reference to the following diagrams :  
< Basic Circuits >  
< Current through L >  
IL  
i2  
IL min  
ton  
IL max  
IOUT  
VOUT  
L
SD  
topen  
VIN  
i1  
t
LX Tr  
CL  
toff  
T=1/ fosc  
Step.1: LxTr is turned ON and current IL (=i1 ) flows, so that energy is charged in L. At this moment, IL(=i1 ) is  
increased from ILmin (=0) to reach ILmax in proportion to the on-time period (ton) of LxTr.  
Step.2: When LxTr is turned OFF, Schottky diode (SD) is turned ON in order that L maintains IL at ILmax, so that  
current IL (=i2) is released.  
Step.3: IL (=i2) is gradually decreased, and in the case of discontinuous mode, IL reaches ILmin (=0) after a time  
period of topen, so that SD is turned OFF. In the case of a continuous mode,the time period (toff) runs out  
before IL reaches ILmin (=0), so that LxTr is turned ON in the next cycle, and SD is turned OFF. In this  
case, ILmin does not reach zero, and IL (=i1) increases from ILmin (>0).  
In the case of PWM control system, with the oscillator frequency (fosc) maintained constant, the output volt-  
age is maintained constant by controlling the on-time period (ton).  
7

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