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RT8008-10QJ5 PDF预览

RT8008-10QJ5

更新时间： 2024-11-21 02:52:31
品牌 Logo 应用领域
立锜 - RICHTEK 转换器
页数 文件大小 规格书
14页 210K
描述
1.5MHz, 600mA, High Efficiency PWM Step-Down DC/DC Converter

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RT8008-10QJ5 数据手册

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RT8008  
1.5MHz, 600mA, High Efficiency PWM Step-Down DC/DC  
Converter  
General Description  
Features  
l +2.5V to +5.5V Input Range  
The RT8008 is a high-efficiency pulse-width-modulated  
(PWM) step-downDC-DC converter. Capable of delivering  
600mA output current over a wide input voltage range from  
2.5V to 5.5V, the RT8008 is ideally suited for portable  
electronic devices that are powered from 1-cell Li-ion  
battery or from other power sources within the range such  
as cellular phones, PDAs and handy-terminals.  
l Adjustable Output From 0.6V to VIN  
l 1.0V, 1.2V, 1.5V, 1.8V, 2.5V and 3.3V Fixed/  
Adjustable Output Voltage  
l 600mA Output Current, 1A Peak Current  
l 95% Efficiency  
l No Schottky Diode Required  
l 1.5MHz Fixed-Frequency PWM Operation  
l Small SOT-23-5 and TSOT-23-5 Package  
l RoHS Compliant and 100% Lead (Pb)-Free  
Internal synchronous rectifier with low RDS(ON) dramatically  
reduces conduction loss at PWM mode. No external  
Schottky diode is required in practical application. The  
RT8008 automatically turns off the synchronous rectifier  
while the inductor current is low and enters discontinuous  
PWM mode. This can increase efficiency at light load  
condition.  
Applications  
l CellularTelephones  
l Personal InformationAppliances  
l Wireless andDSL Modems  
l MP3 Players  
TheRT8008entersLow-Dropout mode when normal PWM  
cannot provide regulated output voltage by continuously  
turning on the upper P-MOSFET. RT8008 enter shutdown  
mode and consumes less than 0.1mA when EN pin is pulled  
low.  
l Portable Instruments  
Ordering Information  
RT8008(-  
)
Package Type  
B : SOT-23-5  
J5 : TSOT-23-5  
The switching ripple is easily smoothed-out by small  
package filtering elements due to a fixed operation  
frequency of 1.5MHz. This along with small SOT-23-5 and  
TSOT-23-5 package provides small PCB area application.  
Other features include soft start, lower internal reference  
voltage with 2% accuracy, over temperature protection,  
and over current protection.  
Operating Temperature Range  
P : Pb Free with Commercial Standard  
G : Green (Halogen Free with Commer-  
cial Standard)  
Output Voltage  
Default : Adjustable  
10 : 1.0V  
Pin Configurations  
12 : 1.2V  
(TOP VIEW)  
15 : 1.5V  
18 : 1.8V  
25 : 2.5V  
33 : 3.3V  
FB/VOUT  
VIN  
EN  
1
2
5
GND  
Note :  
RichTek Pb-free and Green products are :  
}RoHS compliant and compatible with the current require-  
ments of IPC/JEDEC J-STD-020.  
LX  
3
4
SOT-23-5/TSOT-23-5  
}Suitable for use in SnPb or Pb-free soldering processes.  
}100% matte tin (Sn) plating.  
DS8008-04 March 2007  
www.richtek.com  
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