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R1223N502D-TR-FE PDF预览

R1223N502D-TR-FE

更新时间： 2024-11-13 13:01:31
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
Switching Controller

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中文翻译

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R1223N502D-TR-FE 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：,Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.62模拟集成电路 - 其他类型：SWITCHING CONTROLLER
JESD-609代码：e3湿度敏感等级：1
峰值回流温度（摄氏度）：NOT SPECIFIED端子面层：Matte Tin (Sn)
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

R1223N502D-TR-FE 数据手册

 浏览型号R1223N502D-TR-FE的Datasheet PDF文件第2页浏览型号R1223N502D-TR-FE的Datasheet PDF文件第3页浏览型号R1223N502D-TR-FE的Datasheet PDF文件第4页浏览型号R1223N502D-TR-FE的Datasheet PDF文件第5页浏览型号R1223N502D-TR-FE的Datasheet PDF文件第6页浏览型号R1223N502D-TR-FE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

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