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R1223N502H PDF预览

R1223N502H

更新时间： 2024-11-12 22:14:31
品牌 Logo 应用领域
理光 - RICOH 转换器
页数 文件大小 规格书
19页 208K
描述
PWM/VFM Step-down DC/DC Converter

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中文翻译

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R1223N502H 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：TSOP, TSOP5/6,.11,37Reach Compliance Code：unknown
风险等级：5.92控制模式：VOLTAGE-MODE
JESD-30 代码：R-PDSO-G5JESD-609代码：e0
湿度敏感等级：1端子数量：5
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.01 A封装主体材料：PLASTIC/EPOXY
封装代码：TSOP封装等效代码：TSOP5/6,.11,37
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE
认证状态：Not Qualified子类别：Switching Regulator or Controllers
表面贴装：YES最大切换频率：600 kHz
技术：CMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.95 mm端子位置：DUAL
Base Number Matches：1

R1223N502H 数据手册

 浏览型号R1223N502H的Datasheet PDF文件第2页浏览型号R1223N502H的Datasheet PDF文件第3页浏览型号R1223N502H的Datasheet PDF文件第4页浏览型号R1223N502H的Datasheet PDF文件第5页浏览型号R1223N502H的Datasheet PDF文件第6页浏览型号R1223N502H的Datasheet PDF文件第7页 
‘99.12.8  
PWM/VFM step-down DC/DC Converter  
R1223N Series  
12345  
n OUTLINE  
The R1223N Series are PWM step-down DC/DC Converter controllers with low supply current by CMOS  
process.  
Each of these ICs consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier,  
a soft-start circuit, a protection circuit, a PWM/VFM alternative circuit, a chip enable circuit, and resistors for  
voltage detection. A low ripple, high efficiency step-down DC/DC converter can be easily composed of this IC  
with only four external components, or a power-transistor, an inductor, a diode and a capacitor.  
With a PWM/VFM alternative circuit, when the load current is small, the operation is automatically switching  
into the VFM oscillator from PWM oscillator, therefore the efficiency at small load current is improved. The  
R1223N XXXB type, which is without a PWM/VFM alternative circuit, is also available.  
If the term of maximum duty cycle keeps on a certain time, the embedded protection circuit works. There are  
two types of protection function. One is latch-type protection circuit, and it works to latch an external Power  
MOSFET with keeping it disable. To release the condition of protection, after disable this IC with a chip enable  
circuit, enable it again, or restart this IC with power-on. The other is Reset-type protection circuit, and it works to  
restart the operation with soft-start and repeat this operation until maximum duty cycle condition is released.  
Either of these protection circuits can be designated by users’ request.  
n FEATURES  
l Range of Input Voltage · · · · · · · · · · · · ·2.3V~13.2V  
l Built-in Soft-start Function and Two choices of Protection Function (Latch-type or Reset type)  
l Two choices of Oscillator Frequency · · · · · ·300kHz, 500kHz  
l High Efficiency · · · · · · · · · · · · · · · · · ·TYP. 90%  
l Output Voltage · · · · · · · · · · · · · · · · · Stepwise Setting with a step of 0.1V  
in the range of 1.5V ~ 5.0V  
l Standby Current · · · · · · · · · · · · · · · · ·TYP. 0µA  
l High Accuracy Output Voltage · · · · · · · · · ·±2.0%  
l Low Temperature-Drift Coefficient of Output Voltage · · · · · TYP. ±100ppm/°C  
n APPLICATIONS  
l Power source for hand-held communication equipment, cameras, video instruments such as VCRs,  
camcorders.  
l Power source for battery-powered equipment.  
l Power source for household electrical appliances.  
12345  
Rev. 1.11  
- 1 -  
1234567...19

中文翻译

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