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IRU3018CWTR PDF预览

IRU3018CWTR

更新时间： 2024-11-29 09:48:27
品牌 Logo 应用领域
英飞凌 - INFINEON 开关光电二极管
页数 文件大小 规格书
18页 95K
描述
Switching Controller, Voltage-mode, 200kHz Switching Freq-Max, PDSO24, PLASTIC, SOIC-24

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IRU3018CWTR 数据手册

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Data Sheet No. PD94144  
IRU3018  
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC,  
LDO CONTROLLER AND 200mA ON-BOARD LDO REGULATOR  
FEATURES  
DESCRIPTION  
Provides single chip solution for Vcore, GTL+ & clock The IRU3018 controller IC is specifically designed to meet  
supply  
Intel specification for Pentium IIä microprocessor appli-  
200mA On-Board LDO Regulator  
cations as well as the next generation of P6 family pro-  
Designed to meet the latest Intel specification for cessors. The IRU3018 provides a single chip controller  
Pentium IIä IC for the Vcore, LDO controller for GTL+ and an internal  
On-Board DAC programs the output voltage from 200mA regulator for clock supply which are required for  
1.3V to 3.5V the Pentium II applications. These devices feature a pat-  
Linear regulator controller on board for 1.5V GTL+ ented topology that in combination with a few external  
supply  
components as shown in the typical application circuit,  
will provide in excess of 18A of output current for an on-  
Loss-less Short Circuit Protection with HICCUP  
Synchronous operation allows maximum efficiency board DC-DC converter while automatically providing the  
patented architecture allows fixed frequency opera- right output voltage via the 5-bit internal DAC. The  
tion as well as 100% duty cycle during dynamic IRU3018 also features loss-less current sensing for both  
load  
Soft-Start  
switchers by using the RDS(ON) of the high-side power  
MOSFET as the sensing resistor, internal current limit-  
High current totem pole driver for direct driving of the ing for the clock supply, and a Power Good window com-  
external power MOSFET  
Power Good Function monitors all outputs  
parator that switches its open collector output low when  
any one of the outputs is outside of a pre-programmed  
Over-Voltage Protection circuitry protects the window. Other features of the device are: Under-voltage  
switcher output and generates a fault signal  
Thermal Shutdown  
Logic Level Enable Input  
lockout for both 5V and 12V supplies, an external pro-  
grammable soft-start function, programming the oscilla-  
tor frequency via an external resistor, Over-Voltage Pro-  
tection (OVP) circuitry for both switcher outputs and an  
internal thermal shutdown.  
APPLICATIONS  
Total Power Solution for Pentium II processor  
application  
TYPICAL APPLICATION  
5V  
Note:Pentium II is trademark of Intel Corp  
IRU3018  
SWITCHER1  
CONTROL  
VOUT1  
3.3V  
LINEAR  
CONTROL  
LINEAR  
REGULATOR  
VOUT2  
VOUT3  
Figure 1 - Typical application of IRU3018.  
PACKAGE ORDER INFORMATION  
TA (8C)  
DEVICE  
PACKAGE  
0 To 70  
IRU3018CW  
24-Pin Plastic SOIC WB  
Rev. 1.6  
07/16/02  
www.irf.com  
1
1234567...18

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